基于Ls-opt的材料性能参数识别方法研究  

Research on Material Performance Parameter Identification Method Based on Ls-opt

作　　者：陈朗 陈良杰 华真 邓俊艳 杨莹 Chen Lang;Chen Liangjie;Hua Zhen;Deng Junyan;Yang Ying(AVIC Chengdu Aircraft Industrial(group)Co.,Ltd.,Chengdu,Sichuan 610092,CHN)

机构地区：[1]成都飞机工业(集团)有限责任公司,四川成都610092

出　　处：《模具制造》2025年第5期65-68,共4页Die & Mould Manufacture

摘　　要：以2024铝合金板材为研究对象,提出了一种有限元-试验结合的参数识别方法,用以得到在有限元仿真中精度更高的材料模型参数。并用Johnson-Cook模型和最大主应变失效准则分别对铝合金板材的本构、失效行为进行模拟,采用传统识别方法和有限元-试验方法分别识别其模型参数,结果表明有限元-试验方法具有更高的准确性和可靠性。This study focuses on 2024 aluminum alloy sheets and proposes a simulationexperiment method to identify material model parameters with enhanced accuracy for the finite element analysis.The Johnson-Cook constitutive model and the maximum principal strain failure criterion were employed to simulate the mechanical and failure behaviors of the alloy,respectively.Comparative analyses between traditional method and the simulation-experiment method demonstrate that the latter achieves superior accuracy.

关 键 词：有限元-试验方法 参数识别 Johnson-Cook模型 最大主应变失效准则 

分 类 号：TG162[金属学及工艺—热处理] TG659[金属学及工艺—金属学]