CN108709811A - Viscoelastic colloidal mechanic property test method - Google Patents
Viscoelastic colloidal mechanic property test method Download PDFInfo
- Publication number
- CN108709811A CN108709811A CN201810516435.XA CN201810516435A CN108709811A CN 108709811 A CN108709811 A CN 108709811A CN 201810516435 A CN201810516435 A CN 201810516435A CN 108709811 A CN108709811 A CN 108709811A
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- Prior art keywords
- piston
- colloidal
- colloidal materials
- piston rod
- cavity
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
Abstract
The present invention relates to a kind of viscoelastic colloidal mechanic property test methods, are related to Mechanics Performance Testing design field.The present invention, which devises one kind, dynamic compression viscoelastic colloidal and material volume modulus capable of being tested out by displacement, and then test out the buffer of viscoelastic colloidal material mechanical performance, and devise a kind of corresponding viscoelastic colloidal material mechanical performance test method using the buffer, this method realizes that process is simple and practicable, and test result data is accurate and reliable.
Description
Technical field
The present invention relates to Mechanics Performance Testing design fields, and in particular to a kind of viscoelastic colloidal Mechanics Performance Testing
Method.
Background technology
Bulk modulus is to reflect an important parameter of material mechanical property, can be divided into dynamic volume modulus and static volume
Modulus.Bulk modulus under normal conditions is static volume modulus, is defined as that the required pressure of deformation of unit volume occurs
Power indicates the ability that material resists the compression of external fluid statics.It can reflect the other machinery of material to a certain extent
Property.Therefore, the bulk modulus of material how is accurately obtained, to test material mechanical property, is become urgently to be resolved hurrily
Technical problem.
Invention content
(1) technical problems to be solved
The technical problem to be solved by the present invention is to：How the bulk modulus of material is accurately obtained, to test material power
Learn performance.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of viscoelastic colloidal mechanic property test methods, including
Following steps：
Step 1: designing a kind of colloidal damper, the colloidal damper can accommodate the colloidal materials of certain capacity, make
It obtains the colloidal materials and generates compression under the effect of the pressure, generate corresponding elastic force；
Step 2: pressure-the stroke for obtaining the colloidal materials of the certain capacity using designed colloidal damper is bent
Line；
Step 3: the static volume modulus of the colloidal materials is calculated according to the pressure-stroke curve；
Step 4: the compressibility of the colloidal materials is evaluated according to obtained static volume modulus, and then described in evaluation
The mechanical property of colloidal materials.
Preferably, in step 1, the colloidal damper be designed as include：Piston rod 1, cylinder cap 2, piston 3, sealing ring 4,
Cylinder barrel 5, bolt 6, O-ring seal 7, steel ball 8, screwed pipe 9, SOC.HD. cap screw 10 and screw plug；Wherein, the piston rod 1
Left end for connecting the machine gun body of a gun, right end is connected through a screw thread piston 3, and piston 3 is equipped with sealing ring 4；Cylinder cap 2 is sleeved on cylinder barrel
5 one end, using threaded connection so that cylinder cap 2 forms cavity with 5 inside of cylinder barrel, and piston 3 is located in cavity and can be in cavity
Mobile, limitation piston 3, the work for providing initial pretightening force, storing colloidal materials in the cavity, are played in the colloidal materials position
With；Power is passed to piston 3 by machine gun by piston rod 1 in shooting course so that piston 3 can compress colloidal materials, pass through glue
The compressive deformation of body material or intermolecular force storage energy make machine gun reset and consume excess energy；It is bolt 6, O-shaped close
Seal 7, steel ball 8, screwed pipe 9 and SOC.HD. cap screw 10 collectively constitute injecting glue body component, are located at 5 other end of cylinder barrel, the note
Colloid component is equivalent to a check valve, with piston rod 1 together so that the cavity one closed container of formation, is used for institute
It states and injects colloidal materials in cavity, after having noted colloidal materials, injecting glue body component, the injecting glue body component are fixed using screw plug
It is connected through a screw thread with cylinder barrel 5, steel ball 8 is located in screwed pipe 9, and bolt 6 is used for blocking 8 one end of steel ball, the connection of 8 other end of steel ball
SOC.HD. cap screw 10, SOC.HD. cap screw 10 are used for withstanding screwed pipe 9, O-ring seal 7 for installing screwed pipe 9, screw plug
In 9 outer end face of screwed pipe, sealing function is played.
Preferably, in step 2, power is passed to piston 3 by machine gun by piston rod 1 in shooting course so that piston 3
Colloidal materials are compressed, to obtain the pressure-stroke curve of the colloidal materials.
Preferably, in step 3, the static volume modulus of the colloidal materials is calculated using following formula：
Wherein, the sectional area of the cavity is A, and the initial length of colloidal materials is L0, the initial extension elongation of piston rod
For l0, the pressure suffered by colloidal materials, i.e. pressure suffered by piston rod 1 are f, colloidal materials length direction knots modification, i.e.,
Piston rod 1 is l, L in the displacement of length direction0Pass through the initial extension elongation l of piston rod0It is calculated, df/dl is pressure-row
Journey slope of a curve.
Preferably, the material of the bolt 6 uses galvanized wire.
Preferably, the material of the O-ring seal 7 uses fluorubber.
Preferably, the material of the screwed pipe 9 is 40Cr.
Preferably, the material of the SOC.HD. cap screw 10 is 40Cr.
Preferably, the material of the screw plug is 40Cr.
Preferably, the material of the piston rod 1 is 40Cr.
(3) advantageous effect
The present invention, which devises one kind, dynamic compression viscoelastic colloidal and capable of testing out material bodies by displacement
Product module amount, and then the buffer of viscoelastic colloidal material mechanical performance is tested out, and devise one kind accordingly using the buffer
Viscoelastic colloidal material mechanical performance test method, this method realize process it is simple and practicable, test result data is accurate and reliable.
Description of the drawings
Fig. 1 is the colloidal damper structural schematic diagram of the present invention.
Specific implementation mode
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Specific implementation mode is described in further detail.
The present invention provides a kind of viscoelastic colloidal mechanic property test methods, include the following steps：
Step 1: designing a kind of colloidal damper, the colloidal damper can accommodate the colloidal materials of certain capacity, make
It obtains the colloidal materials and generates compression under the effect of the pressure, generate corresponding elastic force；
As shown in Figure 1, the colloidal damper be designed as include：Piston rod 1, cylinder cap 2, piston 3, sealing ring 4, cylinder barrel 5,
Bolt 6, O-ring seal 7, steel ball 8, screwed pipe 9, SOC.HD. cap screw 10 and screw plug；Wherein, the left end of the piston rod 1
For connecting the machine gun body of a gun, right end is connected through a screw thread piston 3, and piston 3 is equipped with sealing ring 4；Cylinder cap 2 is sleeved on 5 one end of cylinder barrel,
Using threaded connection so that cylinder cap 2 forms cavity with 5 inside of cylinder barrel, and piston 3 is located in cavity and can be moved in cavity,
The colloidal materials position in the cavity, plays the role of limiting piston 3, provides initial pretightening force, storage colloidal materials；It penetrates
Power is passed to piston 3 by machine gun by piston rod 1 during hitting so that piston 3 can compress colloidal materials, pass through colloidal materials
Compressive deformation or intermolecular force storage energy machine gun is resetted and consumes excess energy；Bolt 6, O-ring seal 7,
Steel ball 8, screwed pipe 9 and SOC.HD. cap screw 10 collectively constitute injecting glue body component, are located at 5 other end of cylinder barrel, the glue injection body portion
Part is equivalent to a check valve, with piston rod 1 together so that the cavity one closed container of formation, is used for the cavity
After having noted colloidal materials, injecting glue body component, the injecting glue body component and cylinder barrel are fixed using screw plug for interior injection colloidal materials
5 are connected through a screw thread, and steel ball 8 is located in screwed pipe 9, and bolt 6 is used for blocking 8 one end of steel ball, interior six sides of 8 other end of steel ball connection
Screw 10, SOC.HD. cap screw 10 are used for withstanding screwed pipe 9 for installing screwed pipe 9, screw plug, and O-ring seal 7 is located at screw thread
9 outer end face of pipe, plays sealing function.
The material of the bolt 6 uses galvanized wire.The material of the O-ring seal 7 uses fluorubber.It is the screwed pipe 9, interior
Six side's screws 10, screw plug, piston rod 1 material be 40Cr.
The operation principle of the colloidal damper is：Colloidal materials pass through by bolt 6, O-ring seal 7, steel ball 8, screwed pipe 9
The injecting glue body component collectively constituted with SOC.HD. cap screw 10 injects in the vessel formed by cylinder cap 2 and cylinder barrel 5, gives as needed
Certain precompression, i.e., the described initial pretightening force, when machine gun emits, when the external pressure that piston 3 is subject to is less than initial pretightening force,
Piston 3 is stationary；When the ambient pressure or impact force being subject to are more than initial pretightening force, piston 3 moves, and compresses colloid material
Material, colloidal materials give piston 3 reaction force using the damping force that the viscous force that the compression of itself generates is synthesized with internal friction,
Hinder piston 3 to move ahead, and by the mutual movement and deformation of strand, convert external force to thermal energy and molecular potential, consumption with
Storage unit exceptionally power, at this time colloidal materials be in compressive state.And after external force revocation on piston 3, i.e. ambient pressure or punching
When hitting power less than initial pretightening force, colloidal materials self-expansion discharges because compressing stored molecular potential, piston 3 is pushed to return
Position is restored, the arrival of next ambient pressure or impact force is waited for.
Step 2: in the reciprocating motion of the piston rod 1 of colloidal damper designed by step 1, the pressure of viscoelastic material
Shrinkage reflects the energy-dissipating property of buffer, and viscoelastic medium generates compression under the effect of the pressure so that the buffer is with dynamic
State rigidity, to make colloidal damper show certain elasticity.Since the compression ratio of viscoelastic medium is with external pressure
The variation of (strong) and change, therefore the elastic stiffness of colloidal damper is a dynamic rigidity.The compression of viscoelastic colloidal
Property be to cause colloidal damper that there is the main reason for dynamic rate, and the compression ratio of viscoelastic medium can pass through static body product module
It measures to weigh.Based on above-mentioned principle, this step obtains the colloidal materials of the certain capacity using designed colloidal damper
Pressure-stroke curve；Power is passed to piston 3 by machine gun by piston rod 1 specifically in shooting course so that piston 3 is pressed
Contracting colloidal materials, to obtain the pressure-stroke curve of the colloidal materials.
Step 3: the static body of the colloidal materials is calculated using following formula according to the pressure-stroke curve
Product module amount：
Wherein, the sectional area of the cavity is A, and the initial length (or being height) of colloidal materials is L0, piston rod
Initial extension elongation is l0, the pressure suffered by colloidal materials, i.e. pressure suffered by piston rod 1 are f, and colloidal materials are in length direction
Knots modification, i.e., piston rod 1 length direction displacement be l, dl is negative value, therefore, bulk modulus E be positive value, A be it is known often
Number, L0Pass through the initial extension elongation l of piston rod0It being calculated, df/dl is the slope of pressure-stroke curve, so, as long as
To the pressure-stroke curve of the colloid of certain capacity, so that it may the bulk modulus in certain volume compression ratio is calculated.
Step 4: according to obtained static volume modulus, evaluation (utilizing existing evaluation method) described colloidal materials
Compressibility, and then evaluate the mechanical property of (utilize existing evaluation method) described colloidal materials.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of viscoelastic colloidal mechanic property test method, which is characterized in that include the following steps：
Step 1: designing a kind of colloidal damper, the colloidal damper can accommodate the colloidal materials of certain capacity so that institute
It states colloidal materials and generates compression under the effect of the pressure, generate corresponding elastic force；
Step 2: obtaining the pressure-stroke curve of the colloidal materials of the certain capacity using designed colloidal damper；
Step 3: the static volume modulus of the colloidal materials is calculated according to the pressure-stroke curve；
Step 4: evaluating the compressibility of the colloidal materials according to obtained static volume modulus, and then evaluate the colloid
The mechanical property of material.
2. the method as described in claim 1, which is characterized in that in step 1, the colloidal damper be designed as include：Piston
Bar (1), cylinder cap (2), piston (3), sealing ring (4), cylinder barrel (5), bolt (6), O-ring seal (7), steel ball (8), screwed pipe
(9), SOC.HD. cap screw (10) and screw plug；Wherein, for the left end of the piston rod (1) for connecting the machine gun body of a gun, right end is logical
Threaded connection piston (3) is crossed, piston (3) is equipped with sealing ring (4)；Cylinder cap (2) is sleeved on cylinder barrel (5) one end, using threaded connection,
So that cylinder cap (2) is located in cavity and can be moved in cavity, the colloid with cavity, piston (3) is formed on the inside of cylinder barrel (5)
Material position in the cavity, plays the role of limiting piston (3), provides initial pretightening force, storage colloidal materials；Shooting course
Power is passed to piston (3) by middle machine gun by piston rod (1) so that piston (3) can compress colloidal materials, pass through colloidal materials
Compressive deformation or intermolecular force storage energy machine gun is resetted and consumes excess energy；Bolt (6), O-ring seal
(7), steel ball (8), screwed pipe (9) and SOC.HD. cap screw (10) collectively constitute injecting glue body component, are located at cylinder barrel (5) other end,
The injecting glue body component is equivalent to a check valve, makes the cavity form a closed container together with piston rod (1),
For injecting colloidal materials into the cavity, after having noted colloidal materials, injecting glue body component, the note are fixed using screw plug
Colloid component and cylinder barrel (5) are connected through a screw thread, and steel ball (8) is located in screwed pipe (9), and bolt (6) is used for blocking steel ball (8) one
End, steel ball (8) other end connect SOC.HD. cap screw (10), and SOC.HD. cap screw (10) is used for installing screwed pipe (9), screw plug
Screwed pipe (9) is withstood, O-ring seal (7) is located at screwed pipe (9) outer end face, plays sealing function.
3. method as claimed in claim 2, which is characterized in that in step 2, power is passed through piston by machine gun in shooting course
Bar (1) passes to piston (3) so that piston (3) compresses colloidal materials, to which the pressure-stroke for obtaining the colloidal materials is bent
Line.
4. method as claimed in claim 3, which is characterized in that in step 3, the colloid is calculated using following formula
The static volume modulus of material：
Wherein, the sectional area of the cavity is A, and the initial length of colloidal materials is L0, the initial extension elongation of piston rod is l0,
Pressure suffered by colloidal materials, i.e. pressure suffered by piston rod 1 are f, and colloidal materials are in the knots modification of length direction, i.e. piston rod
1 length direction displacement be l, L0Pass through the initial extension elongation l of piston rod0It is calculated, df/dl is pressure-stroke curve
Slope.
5. method as claimed in claim 2, which is characterized in that the material of the bolt (6) uses galvanized wire.
6. method as claimed in claim 2, which is characterized in that the material of the O-ring seal (7) uses fluorubber.
7. method as claimed in claim 2, which is characterized in that the material of the screwed pipe (9) is 40Cr.
8. method as claimed in claim 2, which is characterized in that the material of the SOC.HD. cap screw (10) is 40Cr.
9. method as claimed in claim 2, which is characterized in that the material of the screw plug is 40Cr.
10. method as claimed in claim 2, which is characterized in that the material of the piston rod (1) is 40Cr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516435.XA CN108709811A (en) | 2018-05-25 | 2018-05-25 | Viscoelastic colloidal mechanic property test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810516435.XA CN108709811A (en) | 2018-05-25 | 2018-05-25 | Viscoelastic colloidal mechanic property test method |
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| Publication Number | Publication Date |
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| CN108709811A true CN108709811A (en) | 2018-10-26 |
Family
ID=63869553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810516435.XA Pending CN108709811A (en) | 2018-05-25 | 2018-05-25 | Viscoelastic colloidal mechanic property test method |
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| CN (1) | CN108709811A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740145A (en) * | 2021-09-06 | 2021-12-03 | 中国工程物理研究院电子工程研究所 | Device and method for testing bulk modulus of elastomer material |
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| CN100348705C (en) * | 2003-07-15 | 2007-11-14 | 西北工业大学 | Starch /gelatin/glycerol aqueous compound elastic current change colloid |
| CN101163967A (en) * | 2005-04-20 | 2008-04-16 | Sika技术股份公司 | Device and method for ultrasonically determining the dynamic elastic modulus of a material |
| CN201377628Y (en) * | 2009-04-09 | 2010-01-06 | 北京市捷瑞特弹性阻尼体技术研究中心 | Check valve used for injecting medium into damping and absorbing damper of elastic damping body |
-
2018
- 2018-05-25 CN CN201810516435.XA patent/CN108709811A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348705C (en) * | 2003-07-15 | 2007-11-14 | 西北工业大学 | Starch /gelatin/glycerol aqueous compound elastic current change colloid |
| CN101163967A (en) * | 2005-04-20 | 2008-04-16 | Sika技术股份公司 | Device and method for ultrasonically determining the dynamic elastic modulus of a material |
| CN2876435Y (en) * | 2006-01-11 | 2007-03-07 | 陈秀兰 | Elastic damping shock absorber |
| CN201377628Y (en) * | 2009-04-09 | 2010-01-06 | 北京市捷瑞特弹性阻尼体技术研究中心 | Check valve used for injecting medium into damping and absorbing damper of elastic damping body |
Non-Patent Citations (1)
| Title |
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| 高玲香等: "淀粉/明胶/甘油含水电流变胶体的电场响应行为", 《功能材料》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113740145A (en) * | 2021-09-06 | 2021-12-03 | 中国工程物理研究院电子工程研究所 | Device and method for testing bulk modulus of elastomer material |
| CN113740145B (en) * | 2021-09-06 | 2023-05-05 | 中国工程物理研究院电子工程研究所 | Device and method for testing bulk modulus of elastomer material |
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Application publication date: 20181026 |
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