复合材料多尺度分析方法与典型元件拉伸损伤模拟

杨强; 解维华; 孟松鹤; 杜善义; 李勇霞

doi:10.13801/j.cnki.fhclxb.20150128.002

复合材料多尺度分析方法与典型元件拉伸损伤模拟

哈尔滨工业大学特种环境复合材料国防科技重点实验室, 哈尔滨 150080

基金项目: 国家自然科学基金(91216301,11272107);基础研究项目(613184)

详细信息

通讯作者:
解维华,博士,副教授,博士生导师,研究方向为热防护材料性能的测试、表征与评价。E-mail:michael@hit.eud.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2014-12-25
- 修回日期: 2015-01-07
- 刊出日期: 2015-06-14

Multi-scale analysis method of composites and damage simulation of typical component under tensile load

National Key Laboratory of Science and Technology on Advanced Composite in Special Environments, Harbin Institute of Technology, Harbin 150001, China

摘要

摘要: 复合材料具有多尺度特性, 多尺度模拟方法能够考虑细观损伤、演变对宏观材料性能和力学行为的影响, 是复合材料响应分析的一种重要方法和手段。基于多尺度渐进展开理论, 对复合材料弹性问题控制方程进行尺度分解, 推导了细观尺度与宏观尺度的控制方程, 建立了复合材料宏观和细观尺度响应之间的关联。基于协同多尺度计算策略, 利用通用有限元软件的用户子程序与脚本二次开发, 在宏观模型计算中实时调用细观模型进行多尺度渐进损伤模拟, 实现了宏观和细观尺度的信息传递与反馈。建立的复合材料多尺度数值模拟方法可以快速集成细观损伤模型以及宏观唯象强度理论, 具有良好的通用性。碳/碳复合材料拉伸模拟算例结果与试验结果吻合较好。
- 多尺度分析 /
- 均匀化 /
- 局部化 /
- 渐进损伤 /
- 碳/碳复合材料
Abstract: Composites are multi-scale in nature. The multi-scale simulation stands among one of the most important methods for response analysis of composites, due to its ability to incorporate micro scale damage initiation, evolution and the corresponding effects in macro material property and mechanical behavior. The multi-scale asymptotic expansion theory was used to decompose macro and micro scale governing equation from the original elastic ones, from which the relationship between macro scale and micro scale response was established. Based on synergistic multi-scale computational technique, a multi-scale simulation framework was proposed, and development capability provided in commercial finite element software, including user subroutines and scripts were used to implement it. The developed framework can call micro scale model to carry out multi-scale progressive damage simulation during macro model calculation, and information exchange and feedback between macro and micro scale were realized. Micro scale damage model and macro scale phenomenological strength theory can be easily integrated into this multi-scale numerical simulation method with good generality. The tensile simulation example results of carbon/carbon composites shows good agreement with test results.
- multi-scale analysis /
- homogenization /
- localization /
- progressive damage /
- carbon/carbon composites

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