The primary failure model is fatigue fracture that is always resulted by the crack initiation and propagation.
疲劳断裂是气门弹簧失效的主要模式,它是疲劳裂纹萌生及其扩展的结果。
It is shown that the proposed ductile fracture model can accurately and effectively predict the whole damage process of ductile metals including crack initiation, propagation and final fracture.
结果表明,该模型可很好地预测延性金属材料自裂纹萌生、扩展直至完全断裂的全过程。
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