CN117371143A - Flat plate reinforcing structure for bearing out-of-plane load and design method - Google Patents
Flat plate reinforcing structure for bearing out-of-plane load and design method Download PDFInfo
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- CN117371143A CN117371143A CN202311317762.XA CN202311317762A CN117371143A CN 117371143 A CN117371143 A CN 117371143A CN 202311317762 A CN202311317762 A CN 202311317762A CN 117371143 A CN117371143 A CN 117371143A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 181
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002787 reinforcement Effects 0.000 claims description 34
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000013433 optimization analysis Methods 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000005728 strengthening Methods 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003351 stiffener Substances 0.000 description 6
- 238000003825 pressing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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- General Engineering & Computer Science (AREA)
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- Panels For Use In Building Construction (AREA)
Abstract
The invention discloses a flat plate reinforcing structure for bearing out-of-plane load and a design method thereof, which belong to the technical field of flat plate reinforcing structures and designs thereof. The invention has wide application space in structural designs of mechanical equipment, aviation, aerospace and the like, has strong designability, and can optimize the out-of-plane bearing capacity of the plate reinforced structure by reasonably arranging the relative positions and relative sizes of the plate, the flap, the reinforcing rib and the reinforcing piece, and has high specific strength and high specific rigidity; the assembly precision requirement is low, and the assembly is achieved through riveting; the maintenance is easy, and a maintenance passage can be provided for maintenance personnel through the disassembly of the opening cover; the cost is reduced, and the manufacturing size of a single flat plate reinforcing structure is controlled, so that the cost is saved.
Description
Technical Field
The invention belongs to the technical field of flat plate reinforcing structures and designs thereof, and particularly relates to a flat plate reinforcing structure for bearing out-of-plane loads and a design method thereof.
Background
The flat plate structure is widely applied to the fields of mechanical equipment, aviation, aerospace, automatic control and the like, and can not only transmit loads such as shearing, pulling and pressing in the plane, but also transmit strong loads such as out-of-plane oil pressure, air pressure and water pressure. The strength, rigidity, stability and weight of the flat plate structure not only affect the quality and performance of the product, but also affect the quality and performance of the product. The out-of-plane load is the main cause of the failure of the flat plate structure, so that the maximum out-of-plane load of the flat plate structure is limited, and the reinforcing design of the flat plate structure which is subjected to the out-of-plane load is particularly important.
In order to improve the out-of-plane bearing capacity of a flat plate structure, in the conventional flat plate reinforcing structure design, the following two design methods are mostly adopted:
1. the method directly increases the self size of the flat plate or increases the modes of arranging transverse reinforcement, longitudinal reinforcement and the like on the flat plate structure to improve the out-of-plane bearing capacity of the flat plate structure;
2. the radian is added to the flat plate, and the out-of-plane bearing capacity of the flat plate structure is improved by adopting a mode and a method similar to the design of an aviation spherical frame;
the two traditional design schemes lead to the lack of designability of the flat plate structure, not only increase the space occupation rate of the flat plate structure, but also increase the weight of the product, and put forward higher requirements on manufacturing and assembling, so that the manufacturing and assembling costs are high, and the flat plate structure is not easy to maintain.
Disclosure of Invention
The invention aims to provide a flat plate reinforcing structure for bearing out-of-plane load and a design method thereof, which are used for solving the technical problem that the traditional flat plate structure bears the maximum out-of-plane load, so that the flat plate reinforcing structure can improve the self out-of-plane bearing capacity, ensure the designability of the flat plate structure and provide a maintenance passage on the premise of not increasing the weight of the structure.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, the present invention provides a method for designing a planar reinforcing structure for bearing an out-of-plane load, comprising the steps of:
step 1: preliminarily giving the structure size of the flat plate, and determining the connection positions and connection forms around the flat plate;
step 2: arranging transverse and longitudinal reinforcing ribs on the surface of the flat plate, and preliminarily giving structural form, number, spacing and size information of the transverse and longitudinal reinforcing ribs;
step 3: circular openings are formed in the center of the surface of the flat plate, the size of each circular opening is preliminarily given, and the periphery of each opening is further reinforced, so that a reinforced base is formed;
step 4: a cover is arranged on the reinforcing base, the radian and the size of the cover are determined according to the size of the reinforcing base on the flat plate, a reinforcing skirt edge is formed around the cover, and the reinforcing skirt edge is connected with the reinforcing base;
step 5: arranging reinforcing ribs in the hollow part of the opening cover, and preliminarily giving structural form, direction, number, angle, interval and size information of the reinforcing ribs;
step 6: arranging transverse reinforcing pieces and longitudinal reinforcing pieces along the transverse and longitudinal reinforcing ribs, respectively connecting the transverse reinforcing pieces and the longitudinal reinforcing pieces with the transverse and longitudinal reinforcing ribs, and preliminarily giving connection positions, structural forms, numbers and size information of the transverse reinforcing pieces and the longitudinal reinforcing pieces;
step 7: and (3) determining the structural form, the connection form, the number of components and the size parameter information of the steps 1 to 6 through optimal design or calculation analysis, and finally completing the design of the flat reinforcing structure.
In a second aspect, the present invention provides a panel reinforcement structure for bearing an out-of-plane load, including a panel having front and rear surfaces, a flap mounted at a center of the panel, lateral and longitudinal reinforcement ribs provided at the surface of the panel in a staggered manner, and a reinforcement fixedly connected to the lateral and longitudinal reinforcement ribs;
according to the flat plate reinforcing structure for bearing the out-of-plane load, the transverse and longitudinal reinforcing ribs comprise the transverse reinforcing ribs and the longitudinal reinforcing ribs, the transverse reinforcing ribs are arranged on the surface of the flat plate in parallel, the longitudinal reinforcing ribs are arranged on the surface of the flat plate along the direction perpendicular to the transverse reinforcing ribs, the structural form, the number, the spacing and the size information of the transverse and longitudinal reinforcing ribs are determined by optimization analysis, the transverse and longitudinal reinforcing ribs are arranged on one side or two sides of the flat plate, and the transverse and longitudinal reinforcing ribs are used for improving the out-of-plane rigidity of the flat plate.
According to the flat plate reinforcing structure for bearing the out-of-plane load, the center of the surface of the flat plate is provided with the circular opening, the periphery of the circular opening is provided with the reinforcing base, and the reinforcing base is fixedly connected with the adjacent transverse and longitudinal reinforcing ribs.
According to the panel reinforcing structure for bearing the out-of-plane load, the flap is provided with the flap with a certain radian, the periphery of the flap is provided with the reinforcing skirt edge, the reinforcing skirt edge is used for being connected with the reinforcing base on the panel, the hollow part of the flap is provided with the flap reinforcing rib, the structural form, the direction, the number, the spacing, the angle and the size information of the flap reinforcing rib are determined by optimization analysis, and the flap reinforcing rib is used for improving the out-of-plane rigidity of the flap, so that the out-of-plane rigidity of the whole panel reinforcing structure is improved.
According to the flat reinforcing structure for bearing the out-of-plane load, the reinforcing members comprise the transverse reinforcing members and the longitudinal reinforcing members, the transverse reinforcing members and the longitudinal reinforcing members are arranged on one or more transverse and longitudinal reinforcing ribs, and the connection positions, the structural forms, the number and the size information of the transverse reinforcing members and the longitudinal reinforcing members are determined by optimization analysis and are fixedly connected with the transverse and longitudinal reinforcing ribs so as to improve the out-of-plane bearing capacity of the flat reinforcing structure.
The invention has the advantages and effects that: the invention has wide application space in structural designs of mechanical equipment, aviation, aerospace and the like, has strong designability, and can optimize the out-of-plane bearing capacity of the plate reinforced structure by reasonably arranging the relative positions and relative sizes of the plate, the flap, the reinforcing rib and the reinforcing piece, and has high specific strength and high specific rigidity; the assembly precision requirement is low, and the assembly is achieved through riveting; the maintenance is easy, and a maintenance passage can be provided for maintenance personnel through the disassembly of the opening cover; the cost is reduced, and the manufacturing size of a single flat plate reinforcing structure is controlled, so that the cost is saved.
Drawings
FIG. 1 is a schematic view of a panel reinforcement structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a flat panel according to an embodiment of the present invention, wherein (a) is a schematic view of one embodiment of the flat panel and (b) is a schematic view of another embodiment of the flat panel;
FIG. 3 is a schematic view of an embodiment of a flap of the present invention, wherein (a) is one embodiment of the flap and (b) is another embodiment of the flap;
FIG. 4 is a schematic view of a transverse and longitudinal stiffener according to an embodiment of the present invention;
in the figure:
1. the device comprises a flat plate, 11, transverse reinforcing ribs, 12, longitudinal reinforcing ribs, 13 and a reinforcing base;
2. the flap, 21, flap stiffener, 22, reinforcing skirt;
3. a transverse stiffener;
4. longitudinal stiffeners.
Detailed Description
For a better understanding of the objects, structures and functions of the present invention, a flat panel reinforcement structure and design method for carrying out-of-plane loads in accordance with the present invention will be described in further detail with reference to the accompanying drawings;
an embodiment of the present invention provides a method for designing a flat reinforcement structure for bearing an out-of-plane load, including the steps of:
step 1: preliminarily giving the structural size of the flat plate 1, and determining the connection positions and connection forms around the flat plate 1;
specifically, the design of the flat plate 1 requires that the flat plate 1 meets the requirements of strength, rigidity and stability when bearing out-of-plane load, and the thickness of the connecting area around the flat plate 1 is determined by calculating the extrusion strength of rivets to nail holes of the flat plate 1;
step 2: arranging transverse and longitudinal reinforcing ribs on the surface of the flat plate 1, and preliminarily giving structural form, number, spacing and size information of the transverse and longitudinal reinforcing ribs;
specifically, a calculation formula of stability of the reinforced flat plate is applied, so that the size of a quadrilateral lattice surrounded by every two transverse and longitudinal reinforced bars on the flat plate 1 and the thickness of the flat plate 1 in a surrounding area can be determined, namely, the number of the transverse and longitudinal reinforced bars required to be arranged on the flat plate 1 and the interval between every two transverse and longitudinal reinforced bars are determined; determining the structural form (such as I-shape, L-shape and the like) and the size of the transverse and longitudinal reinforcement by applying a reinforcement flat plate deflection calculation formula;
step 3: circular openings are formed in the center of the surface of the flat plate 1, the size of each circular opening is preliminarily given, and the periphery of each opening is further reinforced to form a reinforced base 13; preliminarily giving the size of the circular opening according to design requirements;
step 4: the method comprises the steps that a cover 2 is arranged on a reinforcing base 13, the radian and the size of the cover 2 are determined according to the size of the reinforcing base 13 on a flat plate 1, a reinforcing skirt edge 22 is formed around the cover 2, and the reinforcing skirt edge 22 is connected with the reinforcing base 13;
specifically, the thickness of the junction area between the reinforcing base 13 and the reinforcing skirt 22 is determined by calculating the nail hole pressing strength of the rivet to the reinforcing base and the reinforcing skirt 22, respectively; determining the radian of the opening through space restriction;
step 5: the hollow part of the flap 2 is provided with flap reinforcing ribs 21, and the structural form, the direction, the number, the angle, the spacing and the size information of the flap reinforcing ribs 21 are preliminarily given;
specifically, the size of a grid surrounded by every two reinforcement bars on the outlet cover and the thickness of a cover in a surrounding area can be determined through a stability calculation formula of the reinforcement bar curved plate, namely the number of reinforcement bars required to be arranged on the outlet cover and the included angle between every two reinforcement bars are determined; determining the structural form (such as I-shape, L-shape and the like) and the size of the reinforced bar by applying a reinforced bar curved plate deflection calculation formula;
step 6: in order to further improve the out-of-plane load bearing capacity of the reinforcing structure of the flat plate 1, arranging the transverse reinforcing member 3 and the longitudinal reinforcing member 4 along the transverse and longitudinal reinforcing ribs, respectively connecting the transverse reinforcing member 3 and the longitudinal reinforcing member 4 with the transverse and longitudinal reinforcing ribs, and preliminarily giving the connection position, the structural form, the number and the size information of the transverse reinforcing member 3 and the longitudinal reinforcing member 4;
specifically, the out-of-plane bearing capacity of the flat plate 1 is improved by arranging transverse and longitudinal reinforcing pieces on transverse and longitudinal reinforcing ribs, and the transverse and longitudinal reinforcing arrangement positions, structural forms (such as an I shape, an L shape and the like) and the size of the transverse and longitudinal reinforcing arrangement positions are determined by applying a reinforcing plate stability and deflection calculation formula.
Step 7: and (3) determining the structural form, the connection form, the number of components and the size parameter information of the steps 1 to 6 through optimal design or calculation analysis, and finally completing the design of the flat reinforcing structure.
As shown in fig. 1, the present invention includes a panel reinforcement structure for bearing an out-of-plane load, for improving an out-of-plane load bearing capacity of the panel reinforcement structure, and specifically includes: the novel waterproof and waterproof plate comprises a plate 1, a cover 2, transverse and longitudinal reinforcing ribs and reinforcing pieces, wherein the plate 1 is provided with a front surface and a rear surface, the cover 2 is installed at the center of the plate 1, the transverse and longitudinal reinforcing ribs are arranged on the surface of the plate 1 in a staggered mode, and the reinforcing pieces are fixedly connected to the transverse and longitudinal reinforcing ribs.
As shown in fig. 2, in order to improve the out-of-plane stiffness of the flat plate 1, the transverse and longitudinal reinforcing ribs include transverse reinforcing ribs 11 and longitudinal reinforcing ribs 12, a plurality of transverse reinforcing ribs 11 are arranged on the surface of the flat plate 1 in parallel, and a plurality of longitudinal reinforcing ribs 12 are arranged on the surface of the flat plate 1 along the direction perpendicular to the transverse reinforcing ribs 11;
and (5) designing information such as structural form, number, spacing, size and the like of the transverse and longitudinal reinforcing ribs according to actual design requirements and load working conditions. The transverse and longitudinal reinforcement bars can be arranged on one side or two sides of the flat plate 1, and the transverse and longitudinal reinforcement bars are used for improving the out-of-plane rigidity of the flat plate 1.
The following illustrates two arrangements of transverse and longitudinal reinforcing bars according to an embodiment of the present invention;
as shown in fig. 2 (a), 5 transverse reinforcing ribs 11 and 3 longitudinal reinforcing ribs 12 are staggered for example;
as shown in fig. 2 (b), 3 transverse reinforcing ribs 11 and 3 longitudinal reinforcing ribs 12 are staggered for example;
with continued reference to fig. 2, a circular opening is formed in the center of the surface of the flat plate 1, a reinforcing base 13 is arranged around the circular opening, and the reinforcing base 13 is connected with a plurality of adjacent transverse and longitudinal reinforcing ribs in a riveting manner according to requirements. The size of the circular opening and the size of the reinforcing base 13 are designed according to the actual design requirements and the load conditions.
As shown in fig. 3, in order to improve the out-of-plane rigidity of the flap 2 and the panel 1, the flap 2 is a flap 2 with a certain radian, a reinforcing skirt 22 is arranged around the flap 2, the reinforcing skirt 22 is used for being connected with a reinforcing base 13 on the panel 1, the reinforcing skirt 22 is connected with the reinforcing base 13 on the panel 1 through rivets, and a hollow part of the flap 2 is provided with a flap reinforcing rib 21. According to the actual design requirements and load conditions, the size of the reinforcing skirt 22, the connection form of the reinforcing skirt 22 and the reinforcing base 13, the number of connecting nails and the like, and the structural form, the direction, the number, the angle, the interval, the size and other information of the cover reinforcing ribs 21 are designed. The flap reinforcing ribs 21 are used for improving the out-of-plane rigidity of the flap 2 and the panel 1, and further improving the out-of-plane rigidity of the whole panel reinforcing structure.
The following illustrates two arrangements of the flap stiffener according to the embodiment of the present invention;
as shown in fig. 3 (a), 2 mutually staggered flap stiffeners 21 are exemplified;
as shown in fig. 3 (b), 1 flap rib 21 is taken as an example;
as shown in fig. 4, in order to increase the out-of-plane load carrying capacity of the panel reinforcement structure, the reinforcement comprises transverse reinforcement 3 and longitudinal reinforcement 4, the transverse reinforcement 3 and the longitudinal reinforcement 4 being arranged along one or more transverse and longitudinal reinforcement bars as required, the transverse and longitudinal reinforcement bars being connected to the reinforcement bars on the panel 1 by rivets. According to the actual design requirement and the load working condition, the information such as the connection position, the structural form, the number, the size and the like of the transverse reinforcing piece 3 and the longitudinal reinforcing piece 4 is designed, determined by optimization analysis, and is in riveted connection with a plurality of transverse and longitudinal reinforcing ribs, so that the out-of-plane bearing capacity of the flat reinforcing structure is improved.
Specifically, the information of the structural form, the connection form, the number of components, the size parameters and the like is determined through optimization design and simulation analysis, and finally the structural design of the flat plate reinforcing structure is completed.
The foregoing is only some, but not all, embodiments of the present invention, and any equivalent modifications of the technical solution of the present invention will be covered by the claims of the present invention by a person of ordinary skill in the art from reading the present specification.
Claims (7)
1. A method of designing a planar reinforcing structure for bearing out-of-plane loads, comprising the steps of:
step 1: preliminarily giving the structure size of the flat plate, and determining the connection positions and connection forms around the flat plate;
step 2: arranging transverse and longitudinal reinforcing ribs on the surface of the flat plate, and preliminarily giving structural form, number, spacing and size information of the transverse and longitudinal reinforcing ribs;
step 3: circular openings are formed in the center of the surface of the flat plate, the size of each circular opening is preliminarily given, and the periphery of each opening is further reinforced, so that a reinforced base is formed;
step 4: a cover is arranged on the reinforcing base, the radian and the size of the cover are determined according to the size of the reinforcing base on the flat plate, a reinforcing skirt edge is formed around the cover, and the reinforcing skirt edge is connected with the reinforcing base;
step 5: arranging reinforcing ribs in the hollow part of the opening cover, and preliminarily giving structural form, direction, number, angle, interval and size information of the reinforcing ribs;
step 6: arranging transverse reinforcing pieces and longitudinal reinforcing pieces along the transverse and longitudinal reinforcing ribs, respectively connecting the transverse reinforcing pieces and the longitudinal reinforcing pieces with the transverse and longitudinal reinforcing ribs, and preliminarily giving connection positions, structural forms, numbers and size information of the transverse reinforcing pieces and the longitudinal reinforcing pieces;
step 7: and (3) determining the structural form, the connection form, the number of components and the size parameter information of the steps 1 to 6 through optimal design or calculation analysis, and finally completing the design of the flat reinforcing structure.
2. A flat panel reinforcing structure for bearing out-of-plane loads, obtained based on the design method of claim 1, comprising:
a plate having front and rear surfaces;
a flap mounted at a central position of the panel;
the transverse and longitudinal reinforcing ribs are arranged on the surface of the flat plate in a staggered manner;
and the reinforcing piece is fixedly connected to the transverse and longitudinal reinforcing ribs.
3. The out-of-plane load bearing flat panel reinforcement structure of claim 2, wherein: the transverse and longitudinal reinforcing ribs comprise transverse reinforcing ribs and longitudinal reinforcing ribs, a plurality of transverse reinforcing ribs are arranged on the surface of the flat plate in parallel, and a plurality of longitudinal reinforcing ribs are arranged on the surface of the flat plate along the direction perpendicular to the transverse reinforcing ribs.
4. The out-of-plane load bearing flat panel reinforcement structure of claim 2, wherein: the structural form, the number, the spacing and the size information of the transverse and longitudinal reinforcing ribs are determined by optimization analysis, and the transverse and longitudinal reinforcing ribs are arranged on one side or two sides of the flat plate.
5. The out-of-plane load bearing flat panel reinforcement structure of claim 2, wherein: the center of the surface of the flat plate is provided with a circular opening, a reinforcing base is arranged around the circular opening, and the reinforcing base is fixedly connected with the adjacent transverse and longitudinal reinforcing ribs.
6. The out-of-plane load bearing flat panel reinforcement structure of claim 5, wherein: the flap is the flap that has certain radian, be equipped with the reinforcement shirt rim around the flap, the hollow part of flap is equipped with the flap strengthening rib, the structural style, the direction, number, interval, angle, the size information of flap strengthening rib are confirmed by the optimization analysis.
7. The out-of-plane load bearing flat panel reinforcement structure of claim 2, wherein: the reinforcing members comprise transverse reinforcing members and longitudinal reinforcing members, the transverse reinforcing members and the longitudinal reinforcing members are arranged on one or more transverse and longitudinal reinforcing ribs, and the connection positions, the structural forms, the number and the size information of the transverse reinforcing members and the longitudinal reinforcing members are determined by optimization analysis and are fixedly connected with the transverse and longitudinal reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311317762.XA CN117371143A (en) | 2023-10-12 | 2023-10-12 | Flat plate reinforcing structure for bearing out-of-plane load and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311317762.XA CN117371143A (en) | 2023-10-12 | 2023-10-12 | Flat plate reinforcing structure for bearing out-of-plane load and design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117371143A true CN117371143A (en) | 2024-01-09 |
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ID=89397642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311317762.XA Pending CN117371143A (en) | 2023-10-12 | 2023-10-12 | Flat plate reinforcing structure for bearing out-of-plane load and design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117371143A (en) |
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2023
- 2023-10-12 CN CN202311317762.XA patent/CN117371143A/en active Pending
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