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Interlaminar Fatigue Growth for Fail-Safe Life Limit Analysis

机译:故障安全寿命极限分析的InterlaMINAR疲劳生长

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An analysis method for calculation of fatigue life of composite parts with complex geometry and multi-mode loading was developed and implemented in a prototype computer program. The method uses finite element modeling in a static loading analysis as a preprocessing step to calculate the strain energy release rates and the crack front shape, which is assumed to be the same for fatigue loading. This approach allows for rapid calculation of the fatigue life and residual strength. Preliminary results showed significant under-prediction of the crack growth rate compared to test. Gaps in the input data and analysis were identified in anticipation of future research to close the gaps.
机译:在原型计算机程序中开发并实现了复合物质和多模式加载的复合部件疲劳寿命的分析方法。该方法在静态加载分析中使用有限元建模作为预处理步骤,以计算应变能释放速率和裂缝前形状,这被假设对于疲劳负载是相同的。这种方法允许快速计算疲劳寿命和剩余强度。与试验相比,初步结果显示出对裂纹生长速率的显着预测。输入数据和分析中的差距被确定为预期未来的研究,以关闭空白。

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