MARC. Jetta car's connecting rod was analyzed. Through analysis, the curve between J integral and splitting force was established.

MARC软件对捷达轿车连杆起裂过程进行了数值分析，得出了裂解力与J积分的关系曲线。

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The J integral is path-independent for the short time creep and long one, while in the transition period, it is weakly path-dependent.

积分在短时蠕变和长时间蠕变条件下是路往无关的，而在过渡蠕变时期，其与路径也只是弱相关。

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J integral value related to the initiation of ductile crack is important material properties for the engineering structure of ductile fracture.

韧性裂纹开始扩展的J积分值对于韧性断裂的工程构件是一个重要的材料性能指标。

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