【摘要】 电动低速汽车能满足人们对低速、短途运输的需求,同时具有绿色环保的特点,正越来越引起人们的关注。根据轿车车身刚度和电动低速汽车的特点,确定了电动低速汽车车身刚度参考标准,然后以某电动低速汽车为例,运用拓扑优化设计,结合实心梁—空心管梁等效材料方法,得到车身材料分布初步方案,随后根据该方案和可制造性原则,详细设计了车身结构。分析结果表明,基于刚度优化设计的电动低速汽车车身结构,其刚度和强度更优。更多还原

【Abstract】 Electric low speed vehicle becomes more and more popular for it could not only satisfy the needs for low-speed,short-distance transportation,but is green and environment friendly as well.In this paper,a reference standard for body stiffness of electric low speed vehicle is first established according to car body stiffness and its characteristics.Then topology optimization is used to achieve a proper material distribution scheme for such vehicle employing an equivalent method of material properties for solid beam vs.pipe beam.Finally,the detailed body structure is designed based on the initial scheme,following appropriate manufacture principles.It is showed that the body structure optimized based on stiffness has better stiffness and strength.更多还原