Dynamic High Strain Rate Plastic Constitutive Model of Q355GNHD High Weathering Steel

Zhilong ZHANG; Heting XIAO; Wei ZHOU

doi:10.13890/j.issn.1000-128x.2021.01.012

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Dynamic High Strain Rate Plastic Constitutive Model of Q355GNHD High Weathering Steel

Material Column | 更新时间：2021-12-09

- Dynamic High Strain Rate Plastic Constitutive Model of Q355GNHD High Weathering Steel
- Electric Drive for Locomotives Issue 1, Pages: 63-68(2021)
- 作者机构：
  
  1.中车青岛四方机车车辆股份有限公司，山东　青岛　266111
  2.中南大学　轨道交通安全教育部重点实验室，湖南　长沙　410075
  3.轨道交通安全关键技术国际合作联合实验室，湖南　长沙　410075
  4.轨道交通列车安全保障技术国家地方联合工程研究中心，湖南　长沙　410075
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.01.012
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Zhilong ZHANG, Heting XIAO, Wei ZHOU. Dynamic High Strain Rate Plastic Constitutive Model of Q355GNHD High Weathering Steel. [J]. Electric Drive for Locomotives (1):63-68(2021)
DOI：

Zhilong ZHANG, Heting XIAO, Wei ZHOU. Dynamic High Strain Rate Plastic Constitutive Model of Q355GNHD High Weathering Steel. [J]. Electric Drive for Locomotives (1):63-68(2021) DOI： 10.13890/j.issn.1000-128x.2021.01.012.

摘要

Q355GNHD高耐候钢是先进轨道车辆车身的常用材料，其动态条件下的塑性本构模型对车身结构受力数值仿真至关重要。文章采用MTS 647 Hydraulic Wedge Grip和AutoCAE (HRST-I) 高速试验机对Q355GNHD高耐候钢开展准静态、动态拉伸力学性能试验，获取了该型材料在0.001~500 s,-1,应变率下的应力应变曲线；通过对该高耐候钢在应变率效应下受载变形规律的分析，确定了应变率加载效应；构建了应变率相关的Johnson-Cook硬化模型，确定了本构表征参数；最后运用ABAQUS平台，验证了模型的正确性。

Abstract

Q355GNHD high weathering steel is a commonly used material for advanced rail vehicle body, the plastic constitutive model of which under dynamic conditions is of great significance for the numerical simulation of vehicle body stress. The experiments on quasi-static and dynamic tensile mechanical properties of Q355GNHD high weathering steelis were carried out by MTS 647 Hydraulic Wedge Grip and AutoCAE (HRST-I) high-speed testing machine. The stress-strain curves of the material at 0.001-500 s,-1, strain rate were obtained through the experiments. The strain rate loading effect was determined by analyzing the deformation law of the high weathering steel under the strain rate effect. Then, the strain rate related Johnson-Cook hardening model was constructed and the constitutive parameters were determined. Finally, the correctness of the model was verified by ABAQUS platform.

关键词

高耐候钢高速列车动态效应应变率效应本构模型有限元分析仿真

Keywords

high weathering steelhigh-speed traindynamic effectstrain rate effectconstitutive modelFEAsimulation

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