高温下陶瓷基复合材料寿命预测工具

S. Case, N. Iyengar, K. Reifsnider
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引用次数: 4

摘要

提出了一种陶瓷基复合材料寿命预测方法。该模型基于临界单元模型框架中包含的损伤力学概念。该模型的一个独特特征是它能够包括温度的一般变化和施加的载荷作为时间的函数。详细介绍了该模型在高温疲劳分析中的应用。此外,给出了一个包含断裂和疲劳综合效应的验证算例。与实验数据的比较表明,结果是好的,虽然结果似乎主要是由破裂效应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Life Prediction Tool for Ceramic Matrix Composites at Elevated Temperatures
A life prediction method for ceramic matrix composites is developed. This model is based upon damage mechanics concepts included in the framework of the critical element model. One unique feature of the model is its ability to include general variations of temperature and applied loads as functions of time. A detailed description of application of the model to elevated temperature fatigue is given. In addition, a validation example is presented that includes the combined effects of rupture and fatigue. The comparison with the experimental data is shown to be good, although the result does appear to be dominated by the rupture effect.
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