江西科学2025，Vol.43Issue(3)：532-540,546,10.DOI:10.13990/j.issn1001-3679.2025.03.20
本构参数对铝合金框架机械连接节点仿真精度的影响分析
Analysis of the Influence of Constitutive Parameters on the Simulation Accuracy of Mechanically Connected Joints in Aluminum Alloy Frame Structures
摘要
Abstract
Given the current research focus on lattice joints and the relative lack of studies on beam-column joints in aluminum alloy frame structures,this study explores how constitutive parameters affect the simulation accuracy of such joints under cyclic loading,grounded in the theoretical framework of constitutive modeling.Utilizing material testing,joint cyclic loading experiments,and numerical simulations,this paper analyzes the influence mechanisms of isotropic hardening parameters,kinematic hardening parameters,and damage parameters within a mixed hardening damage model on the fitting correlation coefficient of hysteresis curves.The results indicate that among the isotropic hardening parameters Q and b,Q exhibits a relatively greater impact on computational accuracy.When the isotropic hardening criterion degenerates to σ0 and σ0+Q,the computational accuracy decreases by 11.68%and 1.24%,respectively.For kinematic hardening parameters n,C,and γ,n=3 represents the minimum value required to ensure computational accuracy.Compared with γ,C exerts a more significant influence on accuracy.When back stress evolution rule degenerates to C/γ,simulation accuracy drops by 48.06%.Based on grey correlation degree theory,the parameters influencing simulation accuracy in descending order are:Q>C>α>b>n>γ.关键词
铝合金框架梁柱节点/循环荷载/混合硬化损伤模型/本构参数/灰色关联度分析Key words
Aluminum alloy beam-column connection/cyclic loading/mixed hardening damage model/constitutive parameters/grey relational analysis分类
建筑与水利引用本文复制引用
饶邦政,黄亮,苏东坡,李亮,高文元,李风增..本构参数对铝合金框架机械连接节点仿真精度的影响分析[J].江西科学,2025,43(3):532-540,546,10.基金项目
国家自然科学基金项目(51178011) （51178011）
中建股份科技研发课题(CSCEC-2021-Z-22) （CSCEC-2021-Z-22）
广西企业委托科技课题(WYALKJ2023-001) （WYALKJ2023-001）
河南省住房城乡建设科技计划项目(K-2303). （K-2303）
