应用数学和力学2025，Vol.46Issue(5)：591-599,9.DOI:10.21656/1000-0887.450285
变形模式假定对冲击加载下圆板最终塑性变形的影响规律研究
Study on the Influence of Deformation Mode Assumption on Plastic Deformation of Circular Plates Under Impact Loading
摘要
Abstract
To find a reliable and universal plastic deformation mode of circular plates under impact loading,based on the energy method,a plastic deformation calculation model for circular plates under impact loading was established,with different deformation modes and material strain rate effects considered.Then the calcula-tion model was compared with the experimental results to analyze the calculation deviation of plastic deforma-tion of circular plates under different deformation modes.The results show that,different deformation mode as-sumptions give different spatial distributions of membrane tensile strain and different membrane tensile average strain rate effects,which changes the energy absorption characteristics of plastic deformations and finally af-fects the plastic deformation values of circular plates.The parabolic deformation mode has the advantages of small errors and wide application ranges for materials,and is suitable for the subsequent engineering evalua-tion.关键词
圆板/冲击加载/变形模式/膜拉伸应变/应变率效应/塑性变形Key words
circular plate/impact loading/deformation mode/tensile strain of membrane/strain rate effect/plastic deformation分类
力学引用本文复制引用
徐维铮,黄宇,李彤,李业勋,傅华,王彦平,郑贤旭..变形模式假定对冲击加载下圆板最终塑性变形的影响规律研究[J].应用数学和力学,2025,46(5):591-599,9.基金项目
国家自然科学基金青年科学基金(12402444) （12402444）
装备预先研究领域基金(80928010101) （80928010101）
