【摘要】 本文利用混合有限元法对干涉配合连接进行了弹塑性分析,并在此整础上进行了疲劳寿命预测。计算结果与实验结果比较表明:本文方法能给出较为准确的局部应变分布,其疲劳寿命的预测精度也较好。更多还原

【Abstract】 Elasto-plastic analysis and fatigue life prediction of interference joints based on mixed approach of F.E.M are presented in this paper. The analysis of an interference joint is more difficult due to the interference. In our paper, we consider the interference joint as a contact system, which is hopefully able to reflect the real condition of the joint. The local strain distributions near the bolt hole have been measured and studied by Moire method, it is verified that the local strain caculated by our method has a fairly good accuracy compared with the measured values. The fatigue life prediction is based on Manson-Coff in Eq. and the prediction results coincide well with the lifes from the fatigue tests of several groups of specimen(?) with different interferences.Additionally, the effects and modifications of e in fatigue life prediction are also discussed in this paper.更多还原