To determine the principal maximal stress-strain cycle of engine components is an important step in research on engine components' life.
确定发动机零部件的最大应力应变循环是进行零部件寿命研究的重要内容之一。
The result shows that using the residue stress we can calculate accurately the maximal stress-strain cycle, which is the main factor influencing component life.
研究结果表明，该方法可以较准确地确定影响零部件寿命主要因素的最大应力应变循环。
The result shows that predicting life by elasticity-plasticity finite element analysis is low and the maximal stress-strain cycle can be calculated accurately by the residual stress method.
研究结果表明，弹塑性有限元分析法预测的寿命偏低，由残余应力可以较准确地确定最大应力应变循环。
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