CN111079265A - Child seat restraint system test method of fiber reinforced composite material - Google Patents
Child seat restraint system test method of fiber reinforced composite material Download PDFInfo
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- CN111079265A CN111079265A CN201911182662.4A CN201911182662A CN111079265A CN 111079265 A CN111079265 A CN 111079265A CN 201911182662 A CN201911182662 A CN 201911182662A CN 111079265 A CN111079265 A CN 111079265A
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- reinforced composite
- fiber reinforced
- composite material
- seat
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- 239000000463 material Substances 0.000 title claims abstract description 35
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 28
- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 238000005457 optimization Methods 0.000 claims abstract description 12
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 238000012795 verification Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000005094 computer simulation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D1/00—Children's chairs
Abstract
The invention discloses a child seat restraint system test method of a fiber reinforced composite material, which comprises the following steps of: design input, modeling design, structural design, simulation analysis and structural optimization, optimizing according to a simulation analysis result, and carrying out optimization selection of the structural design again; and (4) test verification, namely, optimizing and selecting the structural design again according to the test result through a pulley collision test, and enabling qualified products to leave a factory. The invention improves the safety of the restraint system.
Description
Technical Field
The invention belongs to the technical field, and particularly relates to a child seat restraint system test method of a fiber reinforced composite material.
Background
The child occupant restraint system is a device for protecting the safety of a child in a car, however, the existing child occupant restraint system has some disadvantages, such as excessive weight or inconvenient use; the safety is not sufficient, mainly in the case of the deactivation of the anti-overturning device, the strength of the restraint system of the child passenger seat is not sufficient.
Disclosure of Invention
The invention aims to solve the technical problems and provides a child seat restraint system test method of a fiber reinforced composite material, so that the safety of a restraint system is improved. In order to achieve the purpose, the technical scheme of the invention is as follows:
a method of testing a child seat restraint system of a fiber reinforced composite, comprising the steps of:
s1, designing and inputting the items to be tested into the constraint control system;
s2, designing the shape, wherein the molding characteristic of the fiber reinforced composite material needs to be considered, and the design scheme enables the appearance of the whole seat to be simple and smooth in shape;
s3, structural design, including process selection, selection of fiber reinforced composite materials for manufacturing the seat and selection of structural adhesive connecting agents; the headrest height adjusting mechanism comprises a headrest height adjusting mechanism, an inclination angle adjusting mechanism and an ISO-FIX telescopic mechanism; the seat also comprises a layer laying design and a connection design, and a layer laying stacking mode on the seat; the connection design is a connection mode of each layer surface in each seat internal layer;
s4, simulation analysis, including spline test, dynamic simulation and overlay analysis; extracting parameters of the fiber reinforced composite material sample strip in the sample strip test; the dynamic simulation comprises seat restraint system modeling, automobile seat and pulley modeling, dummy positioning and posture adjustment, safety belt modeling, model setting, model debugging, analysis and reporting; the drapability of the fiber material is analyzed to determine whether the fiber material is attached to the surface of the mold, so that wrinkles are avoided;
s5, structural optimization, optimization according to the simulation analysis result, and optimization selection of structural design is carried out again;
s6, verifying by a test, and carrying out optimization selection of structural design again according to a test result through a pulley collision test;
and S7, the qualified product is delivered as a qualified product according to the test verification result, wherein the result is accurate.
Specifically, the fiber reinforced composite material is T300-grade carbon fiber, and the structural adhesive connecting agent is polyurethane adhesive.
Specifically, the ply design is required to be of an equal-thickness structure, and the non-equal-thickness part is reinforced by the ply according to the simulation analysis result.
Compared with the prior art, the child seat restraint system test method of the fiber reinforced composite material has the following main beneficial effects:
the fiber reinforced composite material is used as the material of the forming mechanism of the seat, and has the advantages of light weight and convenient use; after test verification, the material seat has better safety and better protective performance; the test method using the restraint system effectively reduces the material consumption of the fiber reinforced composite material, improves the integral structural strength, saves the cost and shortens the development period.
Drawings
FIG. 1 is a schematic flow diagram of an embodiment of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example (b):
referring to fig. 1, the present embodiment is a method for testing a child seat restraint system of a fiber reinforced composite material, comprising the steps of:
1) designing and inputting, namely inputting items to be tested into a constraint control system;
2) in the modeling design, the molding characteristic of the fiber reinforced composite material needs to be considered, and the design scheme enables the overall appearance of the seat to be concise and smooth in modeling;
3) the structural design comprises the selection of a process, the selection of a fiber reinforced composite material for manufacturing the seat and the selection of a structural adhesive connecting agent; the headrest height adjusting mechanism comprises a headrest height adjusting mechanism, an inclination angle adjusting mechanism and an ISO-FIX telescopic mechanism; the seat also comprises a layer laying design and a connection design, and a layer laying stacking mode on the seat; wherein the fiber reinforced composite material is T300-grade carbon fiber, and the structural adhesive connecting agent is polyurethane adhesive; the connection design is a connection mode of each layer surface in each seat internal layer;
4) simulation analysis, including spline test, dynamic simulation and overlay analysis; parameters of a fiber reinforced composite material sample strip are extracted in a sample strip test, the analysis process is different from the analysis process of a seat constraint system made of a conventional plastic material, the fiber reinforced composite material belongs to an anisotropic material, and the accuracy of the parameters has a large influence on a simulation analysis result; the dynamic simulation comprises seat restraint system modeling, automobile seat and pulley modeling, dummy positioning and posture adjustment, safety belt modeling, model setting, model debugging, analysis and reporting; the spreadability analysis fiber can not be well attached to the surface of the die, so that wrinkles are avoided;
5) optimizing the structure, optimizing according to the simulation analysis result, and carrying out optimization selection of the structural design again, if the paving layer design is required to be of an equal-thickness structure, and paving layer reinforcement is carried out on the part which is not of the equal thickness according to the simulation analysis result;
6) test verification, namely testing the working conditions of front impact, side impact and the like of the seat through a pulley collision test, and carrying out optimization selection of structural design again according to the test result;
7) and (4) the qualified product is delivered as a qualified product according to the test verification result, and is accurate.
When the embodiment is applied, the fiber reinforced composite material is used as the material of the forming mechanism of the seat, so that the seat has the advantages of light weight and convenience in use; after test verification, the material seat has better safety and better protective performance; the test method using the restraint system effectively reduces the material consumption of the fiber reinforced composite material, improves the integral structural strength, saves the cost and shortens the development period.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (3)
1. The test method for the child seat restraint system of the fiber reinforced composite material is characterized by comprising the following steps of:
s1, designing and inputting the items to be tested into the constraint control system;
s2, designing the shape, wherein the molding characteristic of the fiber reinforced composite material needs to be considered, and the design scheme enables the appearance of the whole seat to be simple and smooth in shape;
s3, structural design, including process selection, selection of fiber reinforced composite materials for manufacturing the seat and selection of structural adhesive connecting agents; the headrest height adjusting mechanism comprises a headrest height adjusting mechanism, an inclination angle adjusting mechanism and an ISO-FIX telescopic mechanism; the seat also comprises a layer laying design and a connection design, and a layer laying stacking mode on the seat; the connection design is a connection mode of each layer surface in each seat internal layer;
s4, simulation analysis, including spline test, dynamic simulation and overlay analysis; extracting parameters of the fiber reinforced composite material sample strip in the sample strip test; the dynamic simulation comprises seat restraint system modeling, automobile seat and pulley modeling, dummy positioning and posture adjustment, safety belt modeling, model setting, model debugging, analysis and reporting; the drapability of the fiber material is analyzed to determine whether the fiber material is attached to the surface of the mold, so that wrinkles are avoided;
s5, structural optimization, optimization according to the simulation analysis result, and optimization selection of structural design is carried out again;
s6, verifying by a test, and carrying out optimization selection of structural design again according to a test result through a pulley collision test;
and S7, the qualified product is delivered as a qualified product according to the test verification result, wherein the result is accurate.
2. The method of claim 1 for testing a child seat restraint system of fiber reinforced composite material, wherein: the fiber reinforced composite material is T300-grade carbon fiber, and the structural adhesive connecting agent is polyurethane adhesive.
3. The method of claim 1 for testing a child seat restraint system of fiber reinforced composite material, wherein: the requirement of the layer design is an equal-thickness structure, and the non-equal-thickness part is reinforced by the layer according to the simulation analysis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182662.4A CN111079265A (en) | 2019-11-27 | 2019-11-27 | Child seat restraint system test method of fiber reinforced composite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182662.4A CN111079265A (en) | 2019-11-27 | 2019-11-27 | Child seat restraint system test method of fiber reinforced composite material |
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| Publication Number | Publication Date |
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| CN111079265A true CN111079265A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911182662.4A Pending CN111079265A (en) | 2019-11-27 | 2019-11-27 | Child seat restraint system test method of fiber reinforced composite material |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080269460A1 (en) * | 2005-02-10 | 2008-10-30 | Bowman Christopher N | Stress Relaxation in Crosslinked Polymers |
| CN107679343A (en) * | 2017-10-31 | 2018-02-09 | 吉林大学 | Continuous lod same with thermosetting compound material chair framework optimization method |
| CN109204080A (en) * | 2018-11-15 | 2019-01-15 | 苏州因诺威汽车科技有限公司 | Head rest adjusting device for fibre reinforced composites child safety seat |
-
2019
- 2019-11-27 CN CN201911182662.4A patent/CN111079265A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080269460A1 (en) * | 2005-02-10 | 2008-10-30 | Bowman Christopher N | Stress Relaxation in Crosslinked Polymers |
| CN107679343A (en) * | 2017-10-31 | 2018-02-09 | 吉林大学 | Continuous lod same with thermosetting compound material chair framework optimization method |
| CN109204080A (en) * | 2018-11-15 | 2019-01-15 | 苏州因诺威汽车科技有限公司 | Head rest adjusting device for fibre reinforced composites child safety seat |
Non-Patent Citations (2)
| Title |
|---|
| 吕金美: "可调节儿童安全座椅的开发设计" * |
| 熊长丽: "碳纤维复合材料汽车 B 柱加强板的轻量化设计研究" * |
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Application publication date: 20200428 |