弹塑性体冲击脉冲数值与实验研究

Numerical and Testing Research on Impact Pulse with Elastic-plastic

以弹塑性体冲击接触过程中冲击脉冲的估算为研究目标,采用非线性阻尼弹簧接触模型模拟弹塑性材料的冲击与接触。以铝合金为研究对象,将数值计算结果与实验结果进行对比,发现两者差异较大。根据实验结果得到修正模型,建立了一种弹塑性体的冲击力修正计算模型。修正模型与实验结果吻合较好,该模型对进一步研究弹塑性体的冲击过程和冲击脉冲的预测具有指导意义。

Aiming at the estimate problem of impact pulse in the process of elastic-plastic impact contact,the impact pulse estimate model is simulated by non-linear damp-spring model.The results of simulation is compared with the data of the testing data,the difference is obvious.According to the testing results,an impact correct model was founded.The result of correct model agrees well with the testing results,which has a directive meaning in researching the impact contact process with elastic-plastic.