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Simulation calibration method for mechanical properties of carbon fiber material

A carbon fiber material, calibration method technology, applied in the direction of analyzing materials, using stable shear force to test material strength, using stable tension/pressure to test material strength, etc., can solve the lack of system process and processing methods, control parameters It can shorten the development cycle, improve the calibration accuracy, and ensure the simulation accuracy.

Active Publication Date: 2021-05-28
CHINA AUTOMOTIVE TECH & RES CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, material No. 58 has more control parameters than material No. 54, and the calibration is complicated. Different parameters have different effects on different working conditions. How to obtain accurate control parameters still lacks a systematic process and processing method

Method used

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  • Simulation calibration method for mechanical properties of carbon fiber material
  • Simulation calibration method for mechanical properties of carbon fiber material
  • Simulation calibration method for mechanical properties of carbon fiber material

Examples

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Embodiment Construction

[0038] Unless otherwise defined, the technical terms used in the following embodiments have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are conventional biochemical reagents; the experimental methods, unless otherwise specified, are conventional methods.

[0039] The invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0040] It should be noted that the type of calibration card selected in this example is the No. 58 material card in LS-DYNA. The carbon fiber process is WCM and RTM two process types, and the carbon fiber matrix is ​​epoxy resin. The carbon fiber material mechanical performance simulation calibration method includes the following steps S1 to S7:

[0041] S1. Processing of carbon fiber unidirectional tape and typical laminate tensile, compressive, shearing, three-poi...

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Abstract

The invention provides a simulation calibration method for mechanical properties of a carbon fiber material. The method comprises the following steps: 1, processing a carbon fiber one-way belt and a typical paving layer test sample, testing according to test requirements, and processing test data; 2, building a carbon fiber simulation model, inputting the data obtained by processing in step 1, calibrating, and judging whether parameters obtained by sample piece simulation are reasonable or not; 3, calibrating a three-point bending working condition of the part, and judging whether parameters obtained by three-point bending simulation are reasonable or not; and 4, ending the calibration, and storing the material card. According to the simulation calibration method for the mechanical properties of the carbon fiber material, the sequence and requirements of all working conditions in simulation calibration are defined, the calibration difficulty of the carbon fiber composite material can be remarkably reduced, the project development period is shortened, the calibration precision of a material card in a whole vehicle can be improved through two times of calibration, and unnecessary losses are reduced.

Description

technical field [0001] The invention belongs to the technical field of analysis of mechanical properties of carbon fiber composite materials, and in particular relates to a simulation calibration method for mechanical properties of carbon fiber materials. Background technique [0002] With the development trend of automobile lightweight, carbon fiber reinforced composite materials have become the mainstream materials for the research and development of automobile parts due to their light weight, high strength, shock absorption, noise reduction, fatigue resistance and other excellent properties. At present, the two carbon fiber processes commonly used in car bodies are wet compression molding (WCM) and resin transfer molding (RTM). It has been applied in and becomes the focus and difficulty of lightweight development. Carbon fiber composites will produce a variety of complex damage forms such as matrix cracking, delamination damage, and fiber fracture under low-speed loading...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/24G01N3/62
CPCG01N3/08G01N3/24G01N3/62
Inventor 孟宪明方锐李金柱高继东李洪亮黄亚烽任鹏飞吴昊张赛田杰斌孟琦梁铭丰罗原
Owner CHINA AUTOMOTIVE TECH & RES CENT
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