摘要
转向系统刚度强度是影响汽车稳态特性的重要因素,转向系统NVH性能是影响汽车舒适性的重要指标,所以它的设计需要满足多个性能要求。针对转向系统利用HyperStudy优化软件,采用均匀拉丁方实验设计方法进行样本数据设计,利用最小二乘法构建了汽车转向系统的刚度、强度、NVH多学科系统的近似响应面优化模型,从而对转向系统结构进行了多学科优化。优化结果表明转向系统在刚度、强度及NVH性能有所提高的同时,重量得到较大程度的减轻。算例表明,多学科优化方法具有较高的工程实用性。
The stiffness and strength of steering system are the important factors influencing vehicle steady state performance,while the NVH performance of steering system is an important indicator of vehicle comfort.So,its design needs to meet various performance requirements.Using HyperStudy optimization software for steering system,Sampling points are obtained by using uniform Latin squares design of experimental method;the approximate response surface models of the MDO system of the stiffness,strength and NVH of the steering system are established by using the least-squares method.The sequential quadratic programming method is used to optimize the response surface models.Optimization results show that it lightens the weight of the steering system and meets the stiffness,strength and NVH performance requirements.The example shows this method has strong project practicability.
出处
《计算机仿真》
CSCD
北大核心
2011年第8期310-314,共5页
Computer Simulation
基金
教育部长江学者与创新团队发展计划(531105050037)
关键词
转向系统
响应面法
连续二次规划法
多学科设计优化
Steering system
Response surface models
Sequential quadratic programming
Multidisciplinary design optimization（MDO）
