Validation of the adjusted strength criterion LaRC04 for uni-directional composite under combination of tension and pressure

Jan Krystek; Radek Kottner; Luká? Bek; Vladislav La?

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Validation of the adjusted strength criterion LaRC04 for uni-directional composite under combination of tension and pressure

机译：拉伸和压力作用下单向复合材料调整强度准则LaRC04的验证

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Strength of unidirectional composite materials for some combinations of state of stress cannot be successsfully predicted even with modern failure criteria. In case of the combination of compression in the transverse direction and tension in the fiber direction, the criterion LaRC04 was adjusted in previous work. The predicted strengths in this case reach significantly larger values compared to the ultimate strengths of the material in the respective directions. The adjusted criterion is able to predict the failure of unidirectional composite in case of the mentioned combination of loading. The validation of the adjusted criterion is carried out by means of the comparison of experimental results and numerical analysis performed in finite element system MSC.Marc.

机译：即使采用现代失效准则，也无法成功地预测单向复合材料在某些应力状态组合下的强度。在横向压缩和纤维方向拉伸相结合的情况下，在先前的工作中对标准LaRC04进行了调整。与材料在各个方向上的极限强度相比，这种情况下的预测强度达到明显更大的值。在提到的载荷组合情况下，调整后的标准能够预测单向复合材料的破坏。通过比较实验结果和在有限元系统MSC.Marc中进行的数值分析，对调整后的标准进行了验证。

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《Applied and Computational Mechanics》 |2010年第2期|共页
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Jan Krystek; Radek Kottner; Luká? Bek; Vladislav La?;
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中图分类计算技术、计算机技术;
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Validation of the adjusted strength criterion LaRC04 for uni-directional composite under combination of tension and pressure

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