CN105241751A - Assembly clamper for sandwich structure board lateral compression test - Google Patents
Assembly clamper for sandwich structure board lateral compression test Download PDFInfo
- Publication number
- CN105241751A CN105241751A CN201510627784.5A CN201510627784A CN105241751A CN 105241751 A CN105241751 A CN 105241751A CN 201510627784 A CN201510627784 A CN 201510627784A CN 105241751 A CN105241751 A CN 105241751A
- Authority
- CN
- China
- Prior art keywords
- cushion block
- stupefied
- sandwich structure
- upper grip
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012669 compression test Methods 0.000 title abstract description 4
- 238000012360 testing method Methods 0.000 claims description 59
- 241000826860 Trapezium Species 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 7
- 238000011056 performance test Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 14
- 230000007935 neutral effect Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000011120 plywood Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to an assembly clamper for sandwich structure board lateral compression test. In the prior art, when the large-size and non-symmetrical sandwich board is subjected to the lateral compression performance test, the centering of the compression center is difficult, and the deflection is high. A purpose of the present invention is to solve the problems in the prior art. According to the assembly clamper, an upper clamping head and a lower clamping head are arranged in an upper-lower manner, the deep groove of the upper clamping head and the U-shaped groove of the lower clamping head are oppositely arranged, four vertical position limiting plates are arranged between the upper clamping head and the lower clamping head in a rectangular manner, the upper ends of each vertical position limiting plate are positioned inside the deep groove, the lower ends of each vertical position limiting plate are positioned inside the U-shaped groove, the upper ends between the two transverse and parallel vertical position limiting plates are provided with a universal pad block and an adjustment pad block, the lower ends between the two transverse and parallel vertical position limiting plates are provided with a universal pad block and an adjustment pad block, the two universal pad blocks are oppositely arranged in an upper-lower manner, the two adjustment pad blocks are oppositely arranged in an upper-lower manner, two end plates are respectively arranged on the upper end and the lower end of the upper clamping head and the lower clamping head, and the upper cone column on the upper clamping head and the lower cone column on the lower clamping head are respectively embedded into the corresponding V-shaped grooves. The assembly clamper of the present invention is used for the sandwich structure board lateral compression test.
Description
Technical field
The present invention relates to a kind of sandwich structure plate test fixture, be specifically related to a kind of assembling fixture for sandwich structure plate lateral pressure test.
Background technology
Need to consider numerous factors in sandwich structure plate lateral pressure test jig Design, such as with the easy assembling of testing machine and testpieces, realize the good loading of alignment degree, limit face outer displacement meeting compression standard, reasonably support to retrain, maximized reduction fixture difficulty of processing, improve clamp precision and serviceable life, and experimental safe etc.
The fixture kind of flat-type lateral pressure test is more in the art, and its assembling is generally upper and lower side head-clamp and holds testpieces, by the front and back position of cushion block Adjustment Tests part, and is connected to testing machine and carries out compression test.And these fixtures roughly have three kinds in the restriction at edge, the testpieces left and right sides: (1), edge, the testpieces left and right sides without constraint, cause boundary condition too weak, there will be testpieces flexing phenomenon.(2), edge, the testpieces left and right sides is completely fixed, see Figure 25, cause boundary constraint too strong, for larger-size sandwich structure plate, especially the asymmetrical compound substance of interior exterior skin and sandwich structure, in pressure heart centering, general fixture cannot accurately meet, and has comparatively large deflection when lateral pressure test, occurs that flexing phenomenon will keep compression condition to bring difficulty to test too early.(3), edge, the testpieces left and right sides adopts round bar 17 to limit, and see Figure 26, round bar 17 and testpieces are linear contact lay, do not connect, cause boundary constraint more weak, there will be testpieces flexing phenomenon between two horizontal round bars 17.To sum up (1), (2), (3), the fixture of existing flat-type lateral pressure test is only applicable to the small-sized testpieces of (500mm × below 600mm) or the sandwich structure of symmetry, for larger-size sandwich structure plate, especially the asymmetrical compound substance of interior exterior skin and sandwich structure, in pressure heart centering, above-mentioned fixture cannot accurately meet.
Summary of the invention
The present invention is for solving the asymmetrical Composite Sandwich Plates of covering of large scale (500mm × 600mm) when carrying out side pressure performance test, be difficult to pressure heart centering, amount of deflection is excessive cannot keep compression-loaded operating mode, cause destroying flash test part by the problem of man-made further destroy, and propose a kind of assembling fixture for sandwich structure plate lateral pressure test.
The present invention be solve the problem adopt technical scheme be:
A kind of assembling fixture for sandwich structure plate lateral pressure test of the present invention comprises upper grip, lower chuck, two end plates, two general cushion blocks, two adjustment cushion blocks, two elongated hole Connection Elements, two circular hole Connection Elements, four perpendicular limiting plates and spacing Connection Element, the xsect of upper grip is H type, the horizontal edge upper end of upper grip is shallow slot, lower end is deep trouth, it is stupefied that the bottom surface of shallow slot is provided with epicone along AL direction, on upper grip and a perpendicular side of corresponding deep trouth is provided with several first upper screwed hole along its length, on upper grip and another perpendicular side of corresponding deep trouth is provided with two the second upper screwed holes along its length, the two ends of each vertical edge of upper grip are respectively equipped with elongated hole along short transverse, the xsect of lower chuck is U-shaped, it is stupefied that the lower surface of lower chuck is provided with lower cone along AL direction, one of them vertical edge of lower chuck is provided with several lower threaded hole along its length, the two ends of each vertical edge of lower chuck are respectively equipped with circular hole, the stupefied tapering of the stupefied and lower cone of epicone is identical, one side end face of each end plate is provided with V-type groove along AL direction, the center of the opposite side end face of each end plate is provided with connecting thread hole, the stupefied cone angle of the stupefied and lower cone of epicone is less than the V-type angle β of V-type groove, upper grip and lower chuck setting up and down, and the U-type groove of the deep trouth of upper grip and lower chuck is oppositely arranged, upper grip has on the perpendicular side of the first upper screwed hole and lower chuck and there is the vertical edge of lower threaded hole up and down just to setting, between four perpendicular limiting plate upper grips in rectangular layout and lower chuck, the upper end of each perpendicular limiting plate is positioned at deep trouth, the lower end of each perpendicular limiting plate is positioned at U-type groove, upper end between two laterally parallel perpendicular limiting plates is provided with a general cushion block and an adjustment cushion block, lower end between two laterally parallel perpendicular limiting plates is provided with a general cushion block and an adjustment cushion block, and two general cushion blocks are up and down just to setting, two adjustment cushion blocks are up and down just to setting, general cushion block is provided with two the first dovetail grooves along its length on a side end face of perpendicular limiting plate, adjustment cushion block on and on a side end face of perpendicular limiting plate, be provided with two the second dovetail grooves along its length, the upper end of each perpendicular limiting plate is provided with the upper connecting hole corresponding with elongated hole, the lower end of each perpendicular limiting plate is provided with the lower connecting hole corresponding with circular hole, each perpendicular limiting plate is provided with several spacing hole along its length, two end plates are separately positioned on the upper and lower side of upper grip and lower chuck, and epicone on upper grip is stupefied and lower cone on lower chuck is stupefied embeds in corresponding V-type groove respectively, the upper end of perpendicular limiting plate is fixedly connected with upper grip by elongated hole Connection Element, the lower end of perpendicular limiting plate is fixedly connected with lower chuck by circular hole Connection Element, two of transverse direction perpendicular limiting plates are fixedly connected with by spacing Connection Element.
The present invention compared with prior art has following beneficial effect:
1, the present invention designs general cushion block and adjustment pad thickness by the center (pressure heart position) of test specimen, accurate pad thickness makes the error of pressure heart centering within 0.1mm, thus ensure external symmetry in the strain of battenboard skin-surface, error at least reaches within 5%, therefore, the present invention is applicable to the testpieces of large scale (500mm × more than 600mm) or the sandwich structure of symmetry.
2, the present invention is by first for test specimen clamping on assembling fixture, and after clamping, entirety is put on testing machine again, and the end plate of top is connected with the link on testing machine by the connecting thread hole on it, and therefore, simple and convenient assembly of the present invention, is easy to try front adjustment; Compare traditional being first contained on testing machine by fixture, then method testpieces being loaded fixture is easy, and craft precision is high.
3, edge, the test specimen left and right sides adopts perpendicular limiting plate restriction, perpendicular limiting plate is that face contacts with test specimen, connected by spacing Connection Element between two horizontal perpendicular limiting plates, the constraint that test specimen border obtains is moderate, and in guarantee face, during compression, flexing phenomenon prematurely appears in testpieces.
4, upper grip of the present invention and the lower chuck end plate connection corresponding with it all adopt the mode of boring stupefied embedding V-type groove, thus realize the constraint of blade type mouth freely-supported, and this design is convenient for assembly and load.
5, assembling fixture overall security of the present invention is high, and the elongated hole on upper grip and the design of the circular hole on lower chuck do not affect the degree of freedom of loading direction, and when preventing testpieces from destroying flash disruption, fixture or testpieces fall apart simultaneously.
Accompanying drawing explanation
Fig. 1 is one-piece construction stereographic map of the present invention;
Fig. 2 is one-piece construction front view of the present invention;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the vertical view of Fig. 1;
Fig. 5 is the I partial enlarged drawing of Fig. 3;
Fig. 6 is the front view of upper grip 1;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the vertical view of Fig. 6;
Fig. 9 is II partial enlarged drawing of Fig. 7;
Figure 10 is the front view of lower chuck 2;
Figure 11 is the left view of Figure 10;
Figure 12 is the vertical view of Figure 10;
Figure 13 is III partial enlarged drawing of Figure 11;
Figure 14 is the viewgraph of cross-section of end plate 3;
Figure 15 is the front view of general cushion block 4;
Figure 16 is the B-B sectional view of Figure 15;
Figure 17 is the vertical view of Figure 15;
Figure 18 is the front view of adjustment cushion block 5;
Figure 19 is the C-C sectional view of Figure 18;
Figure 20 is the vertical view of Figure 18;
Figure 21 is the front view of perpendicular limiting plate 6;
Figure 22 is after asymmetrical Composite Sandwich Plates and Fixture assembly, and upper and lower center of collet overlaps with the pressure heart of test specimen 10 schematic diagram;
Figure 23 is the asymmetrical Composite Sandwich Plates pressure heart location drawing (marking M arrow indication in figure for pressure heart position);
Figure 24 is the schematic diagram that outer side panel is close to the thickness d of adjustment cushion block 5;
Figure 25 is the structural representation (in figure, mark 15 is L shape confinement plate, marks 16 for top group component) of existing testpieces fixture (both sides of the edge are completely fixed);
Figure 26 is the structural representation of existing testpieces fixture (both sides of the edge adopt round bar 17 to limit).
Embodiment
Embodiment one: composition graphs 1 ~ Figure 21 illustrates present embodiment, present embodiment comprises upper grip 1, lower chuck 2, two end plates 3, two general cushion blocks 4, two adjustment cushion block 5, two elongated hole Connection Elements 7, two circular hole Connection Elements 8, four perpendicular limiting plates 6 and spacing Connection Element 9
The xsect of upper grip 1 is H type, reverse horizontal positioned during H type ease of assembly, the horizontal edge upper end of upper grip 1 is shallow slot 11, lower end is deep trouth 12, the bottom surface of shallow slot 11 is provided with epicone stupefied 111 along AL direction, on upper grip 1 and a perpendicular side of corresponding deep trouth 12 is provided with several first upper screwed hole 13 along its length, on upper grip 1 and another perpendicular side of corresponding deep trouth 12 is provided with two the second upper screwed holes 18 along its length, the two ends of each vertical edge of upper grip 1 are respectively equipped with elongated hole 14 along short transverse
The xsect of lower chuck 2 is U-shaped, the lower surface of lower chuck 2 is provided with lower cone stupefied 21 along AL direction, one of them vertical edge of lower chuck 2 is provided with several lower threaded hole 22 along its length, the two ends of each vertical edge of lower chuck 2 are respectively equipped with circular hole 23, epicone stupefied 111 is identical with the tapering of lower cone stupefied 21
One side end face of each end plate 3 is provided with V-type groove 31 along AL direction, and the center of the opposite side end face of each end plate 3 is provided with connecting thread hole 32, and the cone angle of epicone stupefied 111 and lower cone stupefied 21 is less than the V-type angle β of V-type groove 31,
Upper grip 1 is setting up and down with lower chuck 2, and the deep trouth 12 of upper grip 1 is oppositely arranged with the U-type groove of lower chuck 2, upper grip 1 has on the perpendicular side of the first upper screwed hole 13 and lower chuck 2 and there is the vertical edge of lower threaded hole 22 up and down just to setting, between four perpendicular limiting plate 6 upper grips 1 in rectangular layout and lower chuck 2, the upper end of each perpendicular limiting plate 6 is positioned at deep trouth 12, the lower end of each perpendicular limiting plate 6 is positioned at U-type groove, upper end between two laterally parallel perpendicular limiting plates 6 is provided with a general cushion block 4 and an adjustment cushion block 5, lower end between two laterally parallel perpendicular limiting plates 6 is provided with a general cushion block 4 and an adjustment cushion block 5, and two general cushion blocks about 4 are just to setting, two adjustment cushion blocks about 5 are just to setting, general cushion block 4 is provided with two the first dovetail grooves 41 along its length on a side end face of perpendicular limiting plate 6, adjustment cushion block 5 on and on a side end face of perpendicular limiting plate 6, be provided with two the second dovetail grooves 51 along its length, the upper end of each perpendicular limiting plate 6 is provided with the upper connecting hole 61 corresponding with elongated hole 14, the lower end of each perpendicular limiting plate 6 is provided with the lower connecting hole 62 corresponding with circular hole 23, each perpendicular limiting plate 6 is provided with several spacing hole 63 along its length,
Two end plates 3 are separately positioned on the upper and lower side of upper grip 1 and lower chuck 2, and the epicone stupefied 111 on upper grip 1 and the lower cone stupefied 21 on lower chuck 2 embed in corresponding V-type groove 31 respectively,
The upper end of perpendicular limiting plate 6 is fixedly connected with upper grip 1 by elongated hole Connection Element 7, the lower end of perpendicular limiting plate 6 is fixedly connected with lower chuck 2 by circular hole Connection Element 8, two of transverse direction perpendicular limiting plates 6 are fixedly connected with by spacing Connection Element 9, and spacing Connection Element 9 retrains perpendicular limiting plate 6 outwards movement.The thickness s of general cushion block 4 and the thickness d of adjustment cushion block 5 can be determined according to the thickness of testpieces 10.
Embodiment two: composition graphs 3 illustrates present embodiment, deep trouth 12 width of the upper grip 1 of present embodiment is equal with the U-type groove width of lower chuck 2.Other composition and annexation identical with embodiment one.
Embodiment three: composition graphs 9 illustrates present embodiment, the cone angle of the epicone stupefied 111 of present embodiment is 60 °.Other composition and annexation identical with embodiment two.
Embodiment four: composition graphs 9 and Figure 13 illustrate present embodiment, the cone angle of the lower cone stupefied 21 of present embodiment is equal with the cone angle of epicone stupefied 111.Other composition and annexation identical with embodiment three.
Embodiment five: present embodiment is described in conjunction with Figure 14, the V-type angle β of present embodiment is 90 °.Other composition and annexation identical with embodiment four.
Embodiment six: composition graphs 6 illustrates present embodiment, the quantity of several upper screwed holes 13 of present embodiment is 10,10 uniform settings of upper screwed hole 13.Other composition and annexation identical with embodiment five.
Embodiment seven: present embodiment is described in conjunction with Figure 10, the quantity of the lower threaded hole 22 of present embodiment is 10, the uniform setting of 10 lower threaded holes 22.Other composition and annexation identical with embodiment six.
Embodiment eight: present embodiment is described in conjunction with Figure 21, the quantity of the spacing hole 63 of present embodiment is 3,3 uniform settings of spacing hole 63.Other composition and annexation identical with embodiment seven.
Embodiment nine: present embodiment is described in conjunction with Figure 16 and Figure 19, first dovetail groove 41 of present embodiment and the second dovetail groove 51 are right-angled trapezium, angle between the hypotenuse of the first dovetail groove 41 and this trapezoidal bottom is 60 °, and the angle between the hypotenuse of the second dovetail groove 51 and this trapezoidal bottom is 60 °.First dovetail groove 41 is cooperation second upper screwed holes 18, second dovetail groove 51 is cooperation first upper screwed holes 13, the adjustment cushion block 5 of upper grip 1 is tentatively fixed when assembling, in addition when test specimen 10 is in upright state with fixture and needs to add pad, when the screw that can ensure on other first upper screwed holes 13 unclamps, adjustment cushion block 5 does not drop, and horizontal level does not change, facilitate the adjustment of centering.Other composition and annexation identical with embodiment eight.
Embodiment ten: present embodiment is described in conjunction with Figure 19, present embodiment and embodiment nine also comprise the first pad 19 and the second pad 20 unlike it, first pad 19 is arranged between general cushion block 4 and testpieces 10, and the second pad 20 is arranged between adjustment cushion block 5 and testpieces 10.The thickness of design position limiting slide block, suitably can add shim liner as finely tuned.Other composition and annexation identical with embodiment nine.
Assembly method of the present invention:
Step one, to clean out in the U-type groove of lower chuck 2, and horizontal positioned;
Step 2, between the general cushion block 4 lower end of test specimen 10 being placed in below and the adjustment cushion block 5 of below, the two ends of test specimen 10 and general cushion block 4 and adjust cushion block 5 justify align after put into U-type groove, and general cushion block 4 is positioned at lower threaded hole 22 side, each lower threaded hole 22 internal thread connects a screw, withstand general cushion block 4 with this screw, with dial torque wrench, this screw is tightened.
Step 3, by the deep trouth 12 of upper grip 1 towards and by upper grip 1 horizontal positioned, and there is the vertical edge of lower threaded hole 22 up and down just to setting by upper grip 1 having on the perpendicular side of the first upper screwed hole 13 and lower chuck 2, clean out in deep trouth 12;
Step 4, the test specimen installing lower chuck 2 is overturn 180 °, test specimen stands upside down and loads in deep trouth 12, in like manner testpieces 1 be placed in top general cushion block 4 and the adjustment cushion block 5 of top between, and general cushion block in step 44 is just right with the general cushion block about 4 in step 2, adjustment cushion block 5 in step 4 is just right with the adjustment cushion block about 5 in step 2, each first upper screwed hole 13 internal thread connects a screw, the general cushion block 4 in step 4 is withstood with this screw, with dial torque wrench, this screw is tightened, each second upper screwed hole 18 internal thread connects a screw, this screw only screw in the second upper screwed hole 18 block adjustment cushion block 5 make it not glide, need not screw,
Step 5, fixture to be overturn again 180 ° (namely upper grip 1 is positioned at top), 4 perpendicular limiting plates 6 are added respectively from fixture side, perpendicular limiting plate 6 is fixedly connected with upper grip 1 by elongated hole 14 by elongated hole Connection Element 7, perpendicular limiting plate 6 is fixedly connected with lower chuck 2 by circular hole 23 by circular hole Connection Element 8, so far, the assembling of assembling fixture entirety is complete.
Step 6, be connected with testing machine platform by the end plate 3 of below, the end plate 3 of below is connected with pressure head of testing machine, the fixture entirety assembled is placed between two end plates 3 in step 5, can start test.
The determination of the pressure heart position of test specimen 10:
When test specimen 10 is asymmetrical Composite Sandwich Plates the inside and outside plate thickness of the battenboard (not etc.), the load of warranty test machine is wanted to act on the center (the pressure heart) of test specimen 10, this just needs the pressure heart position calculating test specimen 10, adjustment cushion block 5 thickness is determined with this, upper grip 1 and lower chuck 2 center is made to overlap with the pressure heart of test specimen 10 after assembling, see Figure 22
Due to plate thickness inside and outside asymmetric battenboard not etc., therefore need by load applying in its pressure in the heart (instead of its center), identical with the strain value of outer panels interior during warranty test, as Figure 23, battenboard is by wainscot (thickness d
1) and outer panels (thickness d
2) and between sandwich of layers be bonded, pressure heart position by comparatively near thick panel side,
Below according to the pressure heart position of test specimen 10 in the asymmetric situation of outer panels in the derivation of laminate Rigidity Calculation:
All regard outer panels in battenboard as laminate, obtained by Compound Material Engineering knowledge, laminate rigidity formula is
{N}＝[A]{ε}+[B]{κ}(1)
Wherein, [A] represents the tensible rigidity matrix of laminate, and [B] represents the coupling terms matrix caused by moment of flexure, and { ε } represents strain, and { κ } represents the curvature of laminate neutral surface;
The Coupling stiffness matrix of symmetrical structure is zero, i.e. [B]=0, and therefore (1) formula can be write
Wherein, subscript represents the direction of ess-strain respectively, and x is horizontal direction (i.e. specimen width direction), and y is vertical direction (i.e. piece lengths direction), and xy is the plane that horizontal direction and vertical direction are formed, N
xrepresent the axle power that coupon level direction (x direction) unit length applies, N
yrepresent the axle power that test specimen vertical direction (y direction) unit length applies, N
xyrepresent the shearing that (in oxy face) unit length applies in test specimen plane;
the strain in x direction on presentation layer plywood neutral surface,
the strain in y direction on presentation layer plywood neutral surface,
shearing strain on presentation layer plywood neutral surface in oxy face; A
ijitem in the tensible rigidity matrix that (i=1,2,6, j=1,2,6) are the laminate after simplifying, can provide concrete numerical value according to known materials parameter, as: A
11, A
12, A
16, A
22, A
26, A
66;
According to Compound Material Engineering basis, for the laminate testing regular symmetric angle-ply used, have
A
16＝A
26＝0(3)
According to Compound Material Engineering basis, for the laminate testing regular symmetric angle-ply used, have
A
16＝A
26＝0(3)
Formula (3) is substituted into formula (2) have
Because test specimen 10 is only by Uniaxial Compression load, pressurized direction be y to, x direction does not stress, therefore has
N
x＝0(5)
Simultaneous formula (4) obtains with formula (5)
For the asymmetric battenboard that inside and outside plate thickness is different, load be made to act on pressure in the heart, interior outer panels pressurized direction and the strain of y direction should be identical, namely
therefore have
By the power N because acting on the unit length in inner panel
y|
inner sidewith the power N of the unit length acted in inner panel
y|
outsidewill about pressure heart equalising torque, therefore
N
y|
inner side× z
1=N
y|
outside× z
2(8)
Wherein, z
1, z
2be respectively the distance of neutral surface to the pressure heart of inner side and outer side panel, as shown in Figure 2.
Simultaneous formula (7) and formula (8), obtain the relational expression of following interior outer panels neutral surface to the distance of the pressure heart:
Thus, testpieces Stiffness Matrix can be obtained according to given material parameter and testpieces laying information, try to achieve the pressure heart position of compression piece in conjunction with each thickness of interlayer size of filled board.According to required pressure heart position, can the thickness of design modifying cushion block 5,
The thickness d computing formula of adjustment cushion block 5: from formula (7):
If
λ is the constant that can be calculated by material parameter
Then formula (9) can be rewritten into
Because test specimen gross thickness is by Z
1,z
2with inside and outside plate thickness d
1, d
2form, as Fig. 2, therefore
Formula (11) substitutes in formula (10), obtains
The thickness d of adjustment cushion block 5:
Outer side panel is close to the thickness d (as Figure 24) of adjustment cushion block 5:
Inner panel is close to the thickness d of adjustment cushion block 5:
Wherein, a is the width of deep trouth 12, and b is test specimen 10 gross thickness, d
1for inner panel thickness, d
2for outer side panel thickness, Z
1for the neutral surface of inner panel is to the distance of pressing the heart, Z
2for outer side panel neutral surface is to the distance of the pressure heart; Wherein a, b, d
1, d
2be known dimensions, Z
1, Z
2, d etc. is calculative amount;
The thickness s of general cushion block 4 does not need to calculate, because when upper lower chuck, adjustment cushion block 5 and test specimen 10 mutually near time, the position of the pressure heart is directly directly adjusted to by adjustment cushion block 5 and is overlapped with upper and lower center of collet, namely load is to act on the pressure of testpieces 10 in the heart, general cushion block is fixing test specimen in this effect, therefore only need prop up general cushion block 4 by upper screwed hole 13 and lower threaded hole 22 with screw and can fill up space between general cushion block 4 and chuck;
The first pad 19 and the second pad 20 can be suitably added between test specimen 10 and adjustment cushion block 5 as finely tuned.
Claims (10)
1. the assembling fixture for sandwich structure plate lateral pressure test, it is characterized in that: described assembling fixture comprises upper grip (1), lower chuck (2), two end plates (3), two general cushion blocks (4), two adjustment cushion block (5), two elongated hole Connection Elements (7), two circular hole Connection Elements (8), four perpendicular limiting plates (6) and spacing Connection Element (9), the xsect of upper grip (1) is H type, the horizontal edge upper end of upper grip (1) is shallow slot (11), lower end is deep trouth (12), the bottom surface of shallow slot 11 is provided with epicone stupefied (111) along AL direction, on upper grip (1) and a perpendicular side of corresponding deep trouth (12) is provided with several first upper screwed hole (13) along its length, on upper grip (1) and another perpendicular side of corresponding deep trouth (12) is provided with two the second upper screwed holes (18) along its length, the two ends of each vertical edge of upper grip (1) are respectively equipped with elongated hole (14) along short transverse, the xsect of lower chuck (2) is U-shaped, the lower surface of lower chuck (2) is provided with lower cone stupefied (21) along AL direction, one of them vertical edge of lower chuck (2) is provided with several lower threaded hole (22) along its length, the two ends of each vertical edge of lower chuck (2) are respectively equipped with circular hole (23), epicone stupefied (111) is identical with the tapering of lower cone stupefied (21), one side end face of each end plate (3) is provided with V-type groove (31) along AL direction, the center of the opposite side end face of each end plate (3) is provided with connecting thread hole (32), the cone angle of epicone stupefied (111) and lower cone stupefied (21) is less than the V-type angle β of V-type groove (31), upper grip (1) is setting up and down with lower chuck (2), and the deep trouth (12) of upper grip (1) is oppositely arranged with the U-type groove of lower chuck (2), upper grip (1) has on the perpendicular side of the first upper screwed hole (13) and lower chuck (2) and there is the vertical edge of lower threaded hole (22) up and down just to setting, between four perpendicular limiting plates (6) upper grip in rectangular layout (1) and lower chuck (2), the upper end of each perpendicular limiting plate (6) is positioned at deep trouth (12), the lower end of each perpendicular limiting plate (6) is positioned at U-type groove, upper end between two laterally parallel perpendicular limiting plates (6) is provided with a general cushion block (4) and adjustment cushion block (5), lower end between two laterally parallel perpendicular limiting plates (6) is provided with a general cushion block (4) and adjustment cushion block (5), and two general cushion blocks (4) are up and down just to setting, two adjustment cushion block (5) are up and down just to setting, general cushion block (4) is gone up and be provided with two the first dovetail grooves (41) along its length on a side end face of perpendicular limiting plate (6), adjustment cushion block (5) is gone up and be provided with two the second dovetail grooves (51) along its length on a side end face of perpendicular limiting plate (6), the upper end of each perpendicular limiting plate (6) is provided with the upper connecting hole (61) corresponding with elongated hole (14), the lower end of each perpendicular limiting plate (6) is provided with the lower connecting hole (62) corresponding with circular hole (23), each perpendicular limiting plate (6) is provided with several spacing hole (63) along its length, two end plates (3) are separately positioned on the upper and lower side of upper grip (1) and lower chuck (2), and the epicone stupefied (111) on upper grip (1) and the lower cone stupefied (21) on lower chuck (2) embed in corresponding V-type groove (31) respectively, the upper end of erecting limiting plate (6) is fixedly connected with upper grip (1) by elongated hole Connection Element (7), the lower end of erecting limiting plate (6) is fixedly connected with lower chuck (2) by circular hole Connection Element (8), two of transverse direction perpendicular limiting plates (6) are fixedly connected with by spacing Connection Element (9).
2. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 1, is characterized in that: deep trouth (12) width of described upper grip (1) is equal with the U-type groove width of lower chuck (2).
3. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 2, is characterized in that: the cone angle of described epicone stupefied (111) is 60 °.
4. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 3, is characterized in that: the cone angle of the cone angle stupefied with epicone (111) of described lower cone stupefied (21) is equal.
5. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 4, is characterized in that: described V-type angle β is 90 °.
6. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 5, is characterized in that: the quantity of described several upper screwed hole (13) is 10, the uniform setting of 10 upper screwed holes (13).
7. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 6, is characterized in that: the quantity of described lower threaded hole (22) is 10, the uniform setting of 10 lower threaded holes (22).
8. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 7, is characterized in that: the quantity of described spacing hole (63) is 3, the uniform setting of 3 spacing holes (63).
9. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 8, it is characterized in that: described first dovetail groove (41) and the second dovetail groove (51) are right-angled trapezium, angle between the hypotenuse of the first dovetail groove (41) and this trapezoidal bottom is 60 °, and the angle between the hypotenuse of the second dovetail groove (51) and this trapezoidal bottom is 60 °.
10. a kind of assembling fixture for sandwich structure plate lateral pressure test according to claim 9, it is characterized in that: described assembling fixture also comprises the first pad (19) and the second pad (20), first pad (19) is arranged between general cushion block (4) and testpieces (10), and the second pad (20) is arranged between adjustment cushion block (5) and testpieces (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627784.5A CN105241751B (en) | 2015-09-28 | 2015-09-28 | A kind of assembling fixture for sandwich structure plate lateral pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510627784.5A CN105241751B (en) | 2015-09-28 | 2015-09-28 | A kind of assembling fixture for sandwich structure plate lateral pressure test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105241751A true CN105241751A (en) | 2016-01-13 |
| CN105241751B CN105241751B (en) | 2017-11-03 |
Family
ID=55039474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510627784.5A Expired - Fee Related CN105241751B (en) | 2015-09-28 | 2015-09-28 | A kind of assembling fixture for sandwich structure plate lateral pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105241751B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466768A (en) * | 2016-01-15 | 2016-04-06 | 郑州大学 | Pretightening drop-hammer type impact testing machine plate test piece fixture with size adjustable |
| CN105865906A (en) * | 2016-05-31 | 2016-08-17 | 沈阳盛远检测技术有限公司 | Centering positioning clamping device for compressing sample |
| CN106483010A (en) * | 2016-09-12 | 2017-03-08 | 同济大学 | Bearing for beam-columns experimental provision |
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN108896411A (en) * | 2018-05-09 | 2018-11-27 | 东南大学 | A kind of shearing experiment device and its experimental method for sandwich plate sandwich layer |
| CN109060514A (en) * | 2018-10-30 | 2018-12-21 | 福州大学 | It keeps stretching out unstability does not occur first for steel plate device and its implementation method in Steel Compression component test |
| CN109668785A (en) * | 2019-01-26 | 2019-04-23 | 北京工业大学 | A kind of adjustable sheet structure compresses buckling test fixture |
| CN110031294A (en) * | 2019-03-18 | 2019-07-19 | 北京工业大学 | Truss core structure side compression testing device |
| CN110487625A (en) * | 2019-08-07 | 2019-11-22 | 青岛理工大学 | A kind of dynamic and static experiment of machanics fixture of adjustable simply supported on four sides rectangular slab |
| CN111398037A (en) * | 2020-04-28 | 2020-07-10 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
| CN111735705A (en) * | 2020-06-24 | 2020-10-02 | 中国矿业大学 | Flexible muscle material net piece deformation characteristic tester under normal load effect |
| CN113109141A (en) * | 2021-05-24 | 2021-07-13 | 哈尔滨工业大学 | High-temperature compression test fixture for special-shaped thin-wall plate-shaped structure |
| CN113547603A (en) * | 2021-06-16 | 2021-10-26 | 福建省喜玛拉雅科技实业有限公司 | Assembly device is used in production of wood furniture |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933414A (en) * | 1995-07-21 | 1997-02-07 | Nippon Steel Corp | Special fulcrum jig for compression test |
| US5965823A (en) * | 1996-08-22 | 1999-10-12 | The United States Of America As Represented By The Secretary Of The Army | Specimen holder for thermal mechanical testing machine |
| CN201281681Y (en) * | 2008-11-04 | 2009-07-29 | 成都飞机工业（集团）有限责任公司 | Non-metal compression performance test jig |
| US20100227087A1 (en) * | 2007-09-19 | 2010-09-09 | Valter Naldi | Panel and relative manufacturing system and method |
| CN101973129A (en) * | 2010-10-28 | 2011-02-16 | 哈尔滨工业大学 | Method for manufacturing composite material dot matrix laminboard by adopting fiber woven prepreg cloth |
| CN102735545A (en) * | 2012-07-04 | 2012-10-17 | 哈尔滨工业大学 | Two-way compressing and shearing composite loading test device |
| CN102944470A (en) * | 2012-11-07 | 2013-02-27 | 上海飞机制造有限公司 | Bending test jig assembly, bending test jig and compression test jig |
| CN202809982U (en) * | 2012-07-23 | 2013-03-20 | 深圳赤晓建筑科技有限公司 | Metal-face all-side-rabbeted sandwich panel and box-type curtain wall plate |
| CN203587434U (en) * | 2013-11-05 | 2014-05-07 | 南京航空航天大学 | Flat-pressing test clamp for sandwich panels |
-
2015
- 2015-09-28 CN CN201510627784.5A patent/CN105241751B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0933414A (en) * | 1995-07-21 | 1997-02-07 | Nippon Steel Corp | Special fulcrum jig for compression test |
| US5965823A (en) * | 1996-08-22 | 1999-10-12 | The United States Of America As Represented By The Secretary Of The Army | Specimen holder for thermal mechanical testing machine |
| US20100227087A1 (en) * | 2007-09-19 | 2010-09-09 | Valter Naldi | Panel and relative manufacturing system and method |
| CN201281681Y (en) * | 2008-11-04 | 2009-07-29 | 成都飞机工业（集团）有限责任公司 | Non-metal compression performance test jig |
| CN101973129A (en) * | 2010-10-28 | 2011-02-16 | 哈尔滨工业大学 | Method for manufacturing composite material dot matrix laminboard by adopting fiber woven prepreg cloth |
| CN102735545A (en) * | 2012-07-04 | 2012-10-17 | 哈尔滨工业大学 | Two-way compressing and shearing composite loading test device |
| CN202809982U (en) * | 2012-07-23 | 2013-03-20 | 深圳赤晓建筑科技有限公司 | Metal-face all-side-rabbeted sandwich panel and box-type curtain wall plate |
| CN102944470A (en) * | 2012-11-07 | 2013-02-27 | 上海飞机制造有限公司 | Bending test jig assembly, bending test jig and compression test jig |
| CN203587434U (en) * | 2013-11-05 | 2014-05-07 | 南京航空航天大学 | Flat-pressing test clamp for sandwich panels |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466768A (en) * | 2016-01-15 | 2016-04-06 | 郑州大学 | Pretightening drop-hammer type impact testing machine plate test piece fixture with size adjustable |
| CN105865906A (en) * | 2016-05-31 | 2016-08-17 | 沈阳盛远检测技术有限公司 | Centering positioning clamping device for compressing sample |
| CN105865906B (en) * | 2016-05-31 | 2018-07-13 | 沈阳盛远检测技术有限公司 | Compress sample centering positioning clamping device |
| CN106483010A (en) * | 2016-09-12 | 2017-03-08 | 同济大学 | Bearing for beam-columns experimental provision |
| CN106483010B (en) * | 2016-09-12 | 2019-04-02 | 同济大学 | Support for beam-columns experimental provision |
| CN106896023A (en) * | 2017-03-22 | 2017-06-27 | 哈尔滨工程大学 | Composite panel structure side pressure test fixture peculiar to vessel |
| CN108896411A (en) * | 2018-05-09 | 2018-11-27 | 东南大学 | A kind of shearing experiment device and its experimental method for sandwich plate sandwich layer |
| CN108896411B (en) * | 2018-05-09 | 2020-09-22 | 东南大学 | Shearing experimental device for sandwich plate core layer and experimental method thereof |
| CN109060514A (en) * | 2018-10-30 | 2018-12-21 | 福州大学 | It keeps stretching out unstability does not occur first for steel plate device and its implementation method in Steel Compression component test |
| CN109060514B (en) * | 2018-10-30 | 2024-05-17 | 福州大学 | Device for keeping extended steel plate from destabilizing in pressed steel member test and implementation method thereof |
| CN109668785A (en) * | 2019-01-26 | 2019-04-23 | 北京工业大学 | A kind of adjustable sheet structure compresses buckling test fixture |
| CN109668785B (en) * | 2019-01-26 | 2021-08-13 | 北京工业大学 | Adjustable clamp for sheet structure compression buckling test |
| CN110031294A (en) * | 2019-03-18 | 2019-07-19 | 北京工业大学 | Truss core structure side compression testing device |
| CN110487625A (en) * | 2019-08-07 | 2019-11-22 | 青岛理工大学 | A kind of dynamic and static experiment of machanics fixture of adjustable simply supported on four sides rectangular slab |
| CN110487625B (en) * | 2019-08-07 | 2023-05-23 | 青岛理工大学 | Adjustable clamp for dynamic and static experiment of four-side simple support rectangular plate |
| CN111398037B (en) * | 2020-04-28 | 2023-03-14 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
| CN111398037A (en) * | 2020-04-28 | 2020-07-10 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
| CN111735705B (en) * | 2020-06-24 | 2021-06-04 | 中国矿业大学 | Flexible muscle material net piece deformation characteristic tester under normal load effect |
| CN111735705A (en) * | 2020-06-24 | 2020-10-02 | 中国矿业大学 | Flexible muscle material net piece deformation characteristic tester under normal load effect |
| CN113109141A (en) * | 2021-05-24 | 2021-07-13 | 哈尔滨工业大学 | High-temperature compression test fixture for special-shaped thin-wall plate-shaped structure |
| CN113547603A (en) * | 2021-06-16 | 2021-10-26 | 福建省喜玛拉雅科技实业有限公司 | Assembly device is used in production of wood furniture |
| CN113547603B (en) * | 2021-06-16 | 2022-08-16 | 福建省喜玛拉雅科技实业有限公司 | Assembly device is used in production of wood furniture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105241751B (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105241751A (en) | Assembly clamper for sandwich structure board lateral compression test | |
| Sokolinsky et al. | Experimental and analytical study of nonlinear bending response of sandwich beams | |
| Flaig et al. | Shear strength and shear stiffness of CLT-beams loaded in plane | |
| CN103434611A (en) | High-precision control method for building large ship | |
| CN207396181U (en) | The experimental rig of double steel plate combined concrete shear wall steel plate local buckling behavior | |
| CN106198219A (en) | A kind of method of testing of composite laminated plate biaxial stretching performance | |
| CN104344993A (en) | Method for testing and measuring member bearing capacity and material performance parameters | |
| CN105372103B (en) | Composite test sample | |
| Tapia et al. | A finger-joint based edge connection for the weak direction of CLT plates | |
| Monti et al. | Square and rectangular concrete columns confined by CFRP: Experimental and numerical investigation | |
| Guo et al. | Experimental study of concrete-filled rectangular HSS columns subjected to biaxial bending | |
| Avilés et al. | Experimental determination of torsion and shear properties of sandwich panels and laminated composites by the plate twist test | |
| CN210376012U (en) | Loading system of stiffening rib stiffening type rectangular concrete-filled steel tube column | |
| Bekisli et al. | Experimental evaluation of a balsa sandwich core with improved shear properties | |
| CN217561132U (en) | A test fixture that is used for rock single face to explode under empty state | |
| Sun et al. | Analysis and experiment on bending performance of laser-welded web-core sandwich plates | |
| CN204142578U (en) | A kind of constraint of the passive type for triaxial test charger | |
| CN106153476B (en) | Timber rolls the test method of modulus of shearing and intensity | |
| CN106404535B (en) | Test specimen component and test method for rock type III fracture toughness testing | |
| WO2013030566A1 (en) | Method and apparatus for determining interlaminar shear mechanical properties of composite laminates | |
| CN210341928U (en) | Steel sheet pile positioner | |
| Thompson et al. | Load attachment for honeycomb panels in racing cars | |
| Johannes et al. | Examination of the failure of sandwich beams with core junctions subjected to in-plane tensile loading | |
| JP5669484B2 (en) | Plate wall bearing wall | |
| CN102175522B (en) | Displacement transmitting device for clamping extensometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 |