基于J-C模型的45钢本构参数识别及验证

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (5) : 173-178.

论文

魏刚 1，张伟 2，邓云飞 1

作者信息 +

Identification and validation of constitutive parameters of 45 Steel based on J-C model

WEI Gang1, ZHANG Wei2,DENG Yunfei1

Author information +

文章历史 +

摘要

使用万能材料试验机、霍普金森拉杆（SHTB）和Taylor撞击试验研究了调质处理的45钢在常温~1000 ℃、应变率10-4~103/s下的力学行为。拟合试验数据，结合Taylor撞击试验反算，得到了J-C本构相关参数和C-L断裂准则的模型参数。通过对高速下Taylor撞击试验中弹体变形和断裂的数值仿真与试验结果的比较，验证了模型及参数对预测调质处理的45钢动态大变形和断裂的有效性。

Abstract

The mechanical behaviors of tempered 45 steel were investigated using a universal material testing machine, a split Hopkinson tension bar (SHTB) and Taylor impact tests within the temperature range of normal temperature —1 000 °C and the strain rate range of 10-4—103 s-1. The model parameters for J-C constitutive model and C-L fracture criterion were obtained through fitting the test data and inverse calculation combining with Taylor impact tests. Through comparing specimens’ deformations and fractures in Taylor impact tests under high velocity and the corresponding numerical simulation results, the effectiveness of models and their parameters was verified for predicting tempered 45 steel’s dynamic large deformation and fracture.

导出引用

魏刚 1，张伟 2，邓云飞 1. 基于J-C模型的45钢本构参数识别及验证[J]. 振动与冲击, 2019, 38(5): 173-178

WEI Gang1, ZHANG Wei2,DENG Yunfei1. Identification and validation of constitutive parameters of 45 Steel based on J-C model[J]. Journal of Vibration and Shock, 2019, 38(5): 173-178

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