塑性工程学报2024,Vol.31Issue(7) :152-159.DOI:10.3969/j.issn.1007-2012.2024.07.019

解析Poly6-18p屈服准则对AA6014-T4在Nakajima试验中的应变场预测

Strain field prediction for AA6014-T4 in Nakajima test by analytical Poly6-18p yield criterion

胡启 陈军
塑性工程学报2024,Vol.31Issue(7) :152-159.DOI:10.3969/j.issn.1007-2012.2024.07.019

解析Poly6-18p屈服准则对AA6014-T4在Nakajima试验中的应变场预测

Strain field prediction for AA6014-T4 in Nakajima test by analytical Poly6-18p yield criterion

胡启 1陈军1
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作者信息

  • 1. 上海交通大学塑性成形技术与装备研究院,上海 200030;上海交通大学模具CAD国家工程中心,上海 200030
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摘要

采用最新的考虑各向异性硬化的解析Poly6-18p屈服准则对AA6014-T4材料的宏观力学演化进行了预测.通过与Yld2000-2d屈服准则进行对比,发现解析Poly6-18p屈服准则能准确预测AA6014-T4材料在不同加载状态下的流动曲线,而只考虑各向同性硬化的Yld2000-2d屈服准则预测的等双拉流动曲线误差较大.将其嵌入到ABAQUS有限元软件中,通过数值仿真模拟了该材料在Nakajima试验中应变场分布的演化规律.结果表明,相比于只考虑了各向同性硬化的Yld2000-2d屈服准则,考虑了各向异性硬化的解析Poly6-18p屈服准则能更加准确地预测Nakajima试验中的应变场分布.

Abstract

The newest analytical Poly6-18p yield criterion considering anisotropic hardening was used to predict the macroscopic mechani-cal evolution of AA6014-T4 material.By comparing with Yld2000-2d yield criterion,it is found that the analytical Poly6-18p yield criteri-on can accurately predict the flow curves of AA6014-T4 material under different loading conditions,while the error of the flow curve under equi-biaxial tension predicted by Yld2000-2d yield criterion considering isotropic hardening is very large.By embedding them into the ABAQUS finite element software,the evolution law of the strain field distribution of the material in the Nakajima test was simulated by nu-merical simulation.The results show that compared with Yld2000-2d yield criterion considering isotropic hardening,the analytical Poly6-18p yield criterion considering anisotropic hardening can more accurately predict the strain field distribution in Nakajima test.

关键词

屈服准则/各向异性硬化/Nakajima试验/数值仿真

Key words

yield criterion/anisotropic hardening/Nakajima test/numerical simulation

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基金项目

国家自然科学基金资助项目(92160206)

出版年

2024
塑性工程学报
中国机械工程学会

塑性工程学报

CSTPCD北大核心
影响因子:0.46
ISSN:1007-2012
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