基于多学科设计优化的车辆产品族设计

Vehicle Product Family Design Based on Multidisciplinary Design Optimization

为提高汽车产品平台及产品族性能优化效果并提高开发效率,提出了一种融合共享变量决策和多学科设计优化的产品族优化设计方法.首先,厘清了产品族设计优化的基本概念;然后,建立了产品族优化问题的数学描述和MDO模型;接下来,提出了改进的产品族设计流程;最后,针对某高性能纯电动乘用车产品平台的底盘产品族优化问题,示例了所提出优化方法和设计流程的有效性.结果表明,经过协同优化的产品族能有效处理多产品多目标间的协调问题,相较于非平台化开发,在保证关键性能的前提下能够最大程度提高车型零部件通用化率,充分发挥产品平台化开发的优势.

For the purpose of enhanced performance of automotive product platforms and product families as well as maintaining high development efficiency,a product family optimization design method that combines shared variable decision-making and multidisciplinary design optimization(MDO)was proposed.Firstly,the basic concepts related to product family design optimization were clarified.Then,the mathematical description and MDO model of the product family optimization problem were established,and an improved product family design process was elaborated as follows.Ultimately,the effectiveness and feasibility of the proposed optimization method was proven through the application to the chassis product family optimization problem of an automotive product platform.The results show that this proposed method can maximize the generalization rate of vehicle parts and components under the premise of ensuring key performance,handle collaborative optimization of multi-product and multi-object,and give full play to the advantages of product platforms,compared to Non-platform development.