多工况下牵引车驱动桥壳多目标优化设计OA北大核心CSTPCD
Multi-objective optimal design of drive axle housing of tractor under multiple load cases
面向牵引车双后桥平衡悬架驱动桥壳强度设计和结构轻量化问题,本文对桥壳进行多工况拓扑优化设计使高应力区材料分布更佳;建立设计变量与响应间的Kriging代理模型,以重量和最大应力为优化目标进行多目标尺寸优化,为桥壳优化问题提供一系列参考方案,如优化方案中桥壳本体质量降低6.5％,制动和牵引工况的最大应力降低约10％,同时焊缝疲劳寿命提升23.0％,有效满足了桥壳对疲劳强度和轻量化的设计需求.
Dealing with the strength-based and lightweight design of a tractor drive axle housing with a double-rear tandem suspension,this paper performed a topology optimization under multiple load cases to get a better material distribution in high stress areas;Then Kriging surrogate models between variables and responses were established,with weight and stress being the multiple objectives.The results of this paper offers a range of reference designs in axle housing optimization,for example,the optimal design reduces weight of the axle housing shell by 6.5％,the maximum stresses under braking and traction conditions by about 10％,and the fatigue life of welds is increased by 23.0％,which can effectively meet the needs of lightweight design and fatigue life of the axle housing.
苏姝丹;曾岩;李刚
大连理工大学工程力学系工业装备结构分析优化与CAE软件全国重点实验室,大连 116024大连理工大学工程力学系工业装备结构分析优化与CAE软件全国重点实验室,大连 116024大连理工大学工程力学系工业装备结构分析优化与CAE软件全国重点实验室,大连 116024
数学
驱动桥壳拓扑优化轻量化疲劳寿命多目标优化
drive axle housingtopological optimizationlightweightfatigue lifemulti-objective optimiza-tion
《计算力学学报》 2024 (6)
977-983,7
国家自然科学基金面上项目(12372119)资助.
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