Numerical Prediction of Strength for 3D Braided Composites
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摘要: 在实验研究和有限元分析的基础上,提出了一种经验性强度失效判据,并利用刚度预报的模型和有限元分析的结果,进一步提出了强度预报的方法.强度计算的结果表明: 预测值与拉伸实验的结果基本相符.Abstract: Based on experimental investigation and finite element analysis (FEA) of braided composites, an empirical failure criterion of strength was proposed to meet the need of engineering application. A strength prediction method of 3D braided composites was introduced by using the model of modulus prediction and the results of FEA. Numerical calculation results indicate that the predicted strength of 3D braided composites agrees quite well with the results of tensile experiment.
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Key words:
- failure criteria /
- fiber strength /
- finite element analysis /
- composite materials
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