机械科学与技术2024，Vol.43Issue(6)：950-956,7.DOI:10.13433/j.cnki.1003-8728.20220295
循环载荷作用下简支梁的损伤演化及刚度分析
Damage Evolvement and Stiffness Analysis of Simply Supported Beams Under Action of Cyclic Loading
摘要
Abstract
Based on the nonlinear fatigue cumulative damage evolution model and continuous damage theory,considering the threshold strain of damage's genration,a damage model is established,in which the fatigue cumulative damage is affected by the current strain state and loading times.The parameters of fatigue cumulative damage evolution model are determined by using the experimental data,and the rationality of the model is verified.The damage evolution simulation of fatigue accumulation related to loading times and deformation is realized via ABAQUS software,and the fatigue simulation calculation of three-point bending simply supported beams is carried out.Considering the linear distribution of damage along the thickness direction of the damaged layer,the bending stiffness of beams with unilateral damage and bilateral damage are studied respectively.关键词
循环加载/疲劳累积损伤/损伤演化/刚度/变形Key words
cyclic loading/fatigue cumulative damage/damage evolution/stiffness/deformation分类
数理科学引用本文复制引用
王振刚,师俊平,胡义锋,曹小杉..循环载荷作用下简支梁的损伤演化及刚度分析[J].机械科学与技术,2024,43(6):950-956,7.基金项目
国家自然科学基金项目(11872300)与陕西省自然基金重点项目(2021JZ-47) （11872300）
