机械科学与技术2025，Vol.44Issue(5)：857-867,11.DOI:10.13433/j.cnki.1003-8728.20230230
多载荷通道复杂铝合金转向节的多工况结构强度有限元分析
Finite Element Analysis of Structural Strength Complex Aluminum Alloy Knuckle Under Multiple Working Conditions and Load Channels
摘要
Abstract
Aiming at the problem that steering knuckles are prone to cracking in service,the static load and load spectrum extracted by multibody dynamics software were used to conduct finite element analysis of structural strength of aluminum alloy steering knuckle with complex center holes in multi-load channels.Using the inertia release as the boundary condition,the static strength of the knuckle was calculated under the six limit conditions.Multiaxial stress fatigue analysis was carried out based on nCode software by combining 9 kinds of reinforced pavement and 2 kinds of driving conditions.The results showed that the maximum stress occurred on the upper end face of the connecting bolt hole between the upper swing arm and the hub,the maximum displacement occurred on the connecting pull arm of the front beam arm,and the PEEQ value was 0,but it was not enough to cause the static damage.The fatigue life of 1.182 3×106 km met the design requirements.The load extraction of test site,static strength calculation and fatigue life prediction via CAE can provide an important basis for optimizing the design of steering knuckle.关键词
转向节/惯性释放/极限工况/静强度/载荷谱/多轴应力疲劳分析Key words
steering knuckle/inertial release/ultimate working condition/static strength/load spectrum/multiaxial stress fatigue analysis分类
金属材料引用本文复制引用
黄亦韬,彭文飞,李贺,林龙飞,邵熠羽,沈宏林..多载荷通道复杂铝合金转向节的多工况结构强度有限元分析[J].机械科学与技术,2025,44(5):857-867,11.基金项目
国家自然科学基金项目(52075272)、省属高校基本科研战略引导项目(SJLZ2021002)及宁波市科技计划(2019B10100,2021Z099) （52075272）
