CN103603372B - A kind of knuckle strengthens many plane cylinder shell structure - Google Patents
A kind of knuckle strengthens many plane cylinder shell structure Download PDFInfo
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- CN103603372B CN103603372B CN201310601976.XA CN201310601976A CN103603372B CN 103603372 B CN103603372 B CN 103603372B CN 201310601976 A CN201310601976 A CN 201310601976A CN 103603372 B CN103603372 B CN 103603372B
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Abstract
The invention discloses a kind of knuckle and strengthen many plane cylinder shell structure, described many plane cylinder shell structure comprises ball sealing head, changeover portion, polygon space plate, also comprise stiffener, bracing piece or strengthen entity structure, stiffener, bracing piece or the knuckle depressed part that by polygon space plate formed of other reinforcement entity setting up on described pole-shell structure.Knuckle of the present invention strengthen many plane cylinder shell structure comparatively in prior art many plane cylinder shell structure have better withstand voltage properties, under identical geometry and material parameter, it is larger that knuckle strengthens the limiting pressure that many plane cylinder shell structure can bear, and is suitable for the pressure-resistance structure for preparing under water or in underground system.
Description
Technical field
The present invention relates to compression-resistant structure field, the compression-resistant structure field particularly under water or in underground system.
Background technology
For strengthening the critical external compressive resistance ability of structure under water or in underground system, usually can do some special design or use in form of structure and strengthening structure.U.S. patent Nos US005711244 discloses a kind of many plane cylinder shell structure with stronger critical external compressive resistance ability, the columnar part of this structure is that plane plate spatially folds by some cycles and is spliced, afterbody is ball sealing header structure, columnar part is connected by changeover portion with ball sealing head, forms the similar pole-shell structure of a sealing.
Under this many plane cylinder shell structure form, because plane plate is spatially folding splicing, thus add the bending resistance moment of inertia of pole-shell structure, many plane cylinder shell structure when being subject to external pressure effect, anti-unstability ability and anti-defect ability stronger.In addition, due to this structural columns part (axis) indention along its length, when being subject to external pressure effect, structure can produce an additional force couple and additional bending moment vertically, under this additional bending moment effect, structure inevitably produces corner radial, thus produces axial additional displacement, destroy the plane pressure-bearing rigidity of general cylindrical shell, the axial rigidity of structure is reduced.Meanwhile, increase in zigzag knuckle place flexural stress.In addition, each plane plate of many planes columnar part is when splicing, and intersection can produce a series of geometry " cusp ", and this geometrical property makes structure have comparatively significantly stress and concentrate in cusp place under external pressure.
Summary of the invention
Based on above-mentioned defect, technical problem to be solved by this invention is the defect that the existing many plane cylinder shell structure axial rigidity deficiency of improvement, knuckle place flexural stress and cusp place stress are too concentrated, propose a kind of reinforcement mode of many plane cylinder shell structure, thus obtain many plane cylinder shell structure that a kind of compressive property is good, axial rigidity is high, cusp stress concentrates relatively weak local strengthening.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of knuckle strengthens many plane cylinder shell structure, described many plane cylinder shell structure comprises ball sealing head, changeover portion, polygon space plate, described polygon space plate is spliced by multiple plane plate is spatially folding, form the columnar part of described many plane cylinder shell structure, described ball sealing head is positioned at the afterbody of many plane cylinder shell structure, described columnar part is connected by changeover portion with described ball sealing head, it is characterized in that: described many plane cylinder shell structure also comprises stiffener, bracing piece and/or other reinforcement entity (4), described stiffener, bracing piece and/or the knuckle depressed part that by polygon space plate formed of other reinforcement entity setting up on described pole-shell structure.
Wherein, described stiffener is any one or more in flat board, bent plate, flap.
Wherein, knuckle depressed part is closed or is not closed by described stiffener.
Wherein, it is keep flat at knuckle place with a bar or tiltedly put reinforcement that described bracing piece is strengthened, or uses many bars to keep flat or intersect at a knuckle place to strengthen.
Wherein, other reinforcement entity described is strengthened by entity structure being enriched knuckle depressed part.
Strengthen according to knuckle of the present invention the superperformance that many plane cylinder shell structure many plane cylinder more of the prior art shell structure has larger axial rigidity, more weak stress is concentrated, namely knuckle strengthens many plane cylinder shell structure more common many plane cylinder shell structure better withstand voltage properties.Under identical geometry and material parameter, it is larger that knuckle strengthens the limiting pressure that many plane cylinder shell structure can bear.Therefore, form of structure of the present invention is suitable for the pressure-resistance structure for preparing under water or in underground system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to local strengthening many plane cylinder shell structure of the present invention;
Fig. 2 is partial cross section's sectional drawing of Fig. 1;
Fig. 3 is first embodiment of the invention schematic diagram;
Fig. 4 is second embodiment of the invention schematic diagram;
Fig. 5 is third embodiment of the invention schematic diagram;
Fig. 6 is the computation model figure of many plane cylinder shell structure in prior art;
Fig. 7 is the computation model figure of strengthened many plane cylinder shell structure in the present invention.
In figure: 1, ball sealing head 2, changeover portion 3, polygon space plate 4, reinforcement entity.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.
Fig. 1 is the schematic diagram of local strengthening many plane cylinder shell structure of the present invention, and Fig. 2 is partial cross section's sectional drawing of the M-M along Fig. 1, N-N, and Fig. 3-5 respectively illustrates according to local strengthening many plane cylinder shell structure of the present invention.
As shown in Figure 3, be made up of ball sealing head 1, changeover portion 2, polygon space plate 3, reinforcement bent plate 4 according to local strengthening many plane cylinder shell structure of first embodiment of the invention.
As shown in Figure 4, be made up of ball sealing head 1, changeover portion 2, polygon space plate 3, reinforcement dull and stereotyped 4 according to local strengthening many plane cylinder shell structure of second embodiment of the invention.
As shown in Figure 5, be made up of ball sealing head 1, changeover portion 2, polygon space plate 3, bracing piece 4 according to local strengthening many plane cylinder shell structure of third embodiment of the invention.
The model of reinforcing prop shell structure of the present invention and many plane cylinder shell structure of the prior art is set up below with instantiation, calculate under identical geometry and material parameter, be subject to steady-error coefficient during identical external applied load, in order to the advantage place of the more common many flat circle pole-shell structure of the present invention to be described.
1, geometrical model
As shown in fig. 6-7, computation model comprises many plane cylinder shell of unstrengthened many planes reinforcing prop shell and reinforcement.Two kinds of post shells are completely the same except local strengthening part.In the present embodiment, physical dimension is preferably as follows:
Length: L=1160mm wherein ball sealing head accounts for overall length 360mm, and changeover portion accounts for the 80mm of overall length, and many plane cylinder shell part accounts for the 720mm of overall length; Radius: R=180mm; Thickness: t=2mm
In this example, stiffener is arranged at 10mm directly over external surface plate intersection.
Load the way of restraint: 1) do not strengthen many plane cylinder shell
The way of restraint: 6 degree of freedom of constraint post shell ball sealing crown point, and inertia release.
Load: apply well-distributed pressure at whole external surface (inner surface), size is 1MPa.
2) many plane cylinder shell is strengthened
The way of restraint: 6 degree of freedom of constraint post shell ball sealing crown point, and inertia release.
Load: apply well-distributed pressure except all plate external surfaces (inner surface) outside stiffener, size is 1MPa.
2, result
Calculate two kinds of post shell responses under interior pressure and external pressure situation respectively.Can obtain the mises stress of columnar part, axial displacement, circumferential displacement result, result is as shown in table 1 to table 3.
As can be seen from Table 1 in identical external pressure (interior pressure) situation, the maximum stress of the many planes columnar part after reinforcement can reduce about 36%.Meanwhile, make cusp place stress concentrate situation to relax to some extent, make plate upper stress distribution uniform, material is fully used.
Table 1 columnar part maximum stress result
Table 2 columnar part maximum radial displacement result
Table 3 columnar part maximum axial displacement result
As can be seen from Table 2 in identical external pressure (interior pressure) situation, the maximum radial displacement that the many planes after reinforcement strengthen columnar part can reduce about 37%, and radial rigidity obtains enhancing.
As can be seen from Table 3 in identical external pressure (interior pressure) situation, the maximum axial displacement that many planes large after reinforcement strengthen columnar part reduces about 40%, and axial rigidity is enhanced.Prove that this mode effectively can solve many planes reinforcing prop shell axial rigidity this defect weak.
In sum, many planes reinforcing prop shell local is strengthened, effectively can solve that its axial rigidity is not enough, the stress too defect such as defect.And its advantage can be strengthened further.
Below be only adopt concrete size to carry out actual verification explanation to the effect of structure of the present invention in the present embodiment, in order to the enhancing effect of this mechanism to be described, but do not represent structure of the present invention and can only adopt above-mentioned size, also the post shell not representing said structure can only produce the parameter value of the concrete numerical values recited cited by above-described embodiment, in fact, as long as the knuckle with said structure strengthens many plane cylinder, no matter adopt which kind of size in actual applications, it can reach and have axial rigidity, the superperformance that more weak stress is concentrated, more common many plane cylinder shell structure has better withstand voltage properties.
It should be noted that, this detailed description of the invention is only in order to explain the present invention and unrestricted, and object makes technical scheme of the present invention and advantage be able to manifest more clearly.Be to be understood that, two kinds of embodiments described above not give expression to all according to strengthening form of the present invention, just as previously mentioned, any have strengthen the strengthening form of stress distribution under many plane cylinder shell structures axial rigidity, uniform external effect and be all considered as concept and range of the present invention.
Claims (1)
1. the knuckle for the preparation of the pressure-resistance structure under water or in underground system strengthens many plane cylinder shell structure, described many plane cylinder shell structure comprises ball sealing head (1), changeover portion (2), polygon space plate (3), described polygon space plate is spliced by multiple plane plate is spatially folding, form the columnar part of described many plane cylinder shell structure, described ball sealing head is positioned at the afterbody of many plane cylinder shell structure, described columnar part is connected by described changeover portion with described ball sealing head, it is characterized in that: described many plane cylinder shell structure also comprises stiffener, bracing piece and/or other reinforcement entity (4), described stiffener, bracing piece and/or other knuckle depressed part strengthened spatially folding by plane plate on described many plane cylinder shell structure of entity setting up and formed,
Knuckle depressed part is closed or is not closed by described stiffener, described stiffener is any one or more in flat board, bent plate, flap, it is keep flat at knuckle place with a bar or tiltedly put reinforcement that described bracing piece is strengthened, or use many bars to keep flat or intersect at a knuckle place to strengthen, described other is strengthened entity and is strengthened by entity structure being enriched knuckle depressed part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310601976.XA CN103603372B (en) | 2013-11-23 | 2013-11-23 | A kind of knuckle strengthens many plane cylinder shell structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310601976.XA CN103603372B (en) | 2013-11-23 | 2013-11-23 | A kind of knuckle strengthens many plane cylinder shell structure |
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| CN103603372A CN103603372A (en) | 2014-02-26 |
| CN103603372B true CN103603372B (en) | 2015-09-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106122470B (en) * | 2016-08-12 | 2017-11-14 | 华中科技大学 | A kind of more plane pressure-resistance structures |
| CN109855021A (en) * | 2019-01-04 | 2019-06-07 | 嘉兴星创科技有限公司 | A kind of LED fish-luring light |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081970A (en) * | 1976-03-23 | 1978-04-04 | Golder Hoek And Associates Limited | Underwater structure |
| CN2779249Y (en) * | 2005-02-06 | 2006-05-10 | 河南德润锅炉有限公司 | Embedding vacuum boiler combined barrel |
| CN102182207A (en) * | 2011-04-08 | 2011-09-14 | 中国船舶重工集团公司第七○二研究所 | Assembled annular structure |
| CN203729333U (en) * | 2013-11-23 | 2014-07-23 | 华中科技大学 | Multi-plane cylindrical shell structure with reinforced folded corners |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711244A (en) * | 1995-10-06 | 1998-01-27 | Knapp; Ronald H. | Polyhedrally stiffened cylindrical (PC) pressure hull |
-
2013
- 2013-11-23 CN CN201310601976.XA patent/CN103603372B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081970A (en) * | 1976-03-23 | 1978-04-04 | Golder Hoek And Associates Limited | Underwater structure |
| CN2779249Y (en) * | 2005-02-06 | 2006-05-10 | 河南德润锅炉有限公司 | Embedding vacuum boiler combined barrel |
| CN102182207A (en) * | 2011-04-08 | 2011-09-14 | 中国船舶重工集团公司第七○二研究所 | Assembled annular structure |
| CN203729333U (en) * | 2013-11-23 | 2014-07-23 | 华中科技大学 | Multi-plane cylindrical shell structure with reinforced folded corners |
Non-Patent Citations (1)
| Title |
|---|
| 复合材料的多平面加强柱壳结构研究;姜舜;《中国学位论文全文数据库》;20120426;第8页第3段，图2.5 * |
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