整合的虚拟产品开发技术应用研究

针对车辆这样复杂系统的开发工作,构建一个整合的虚拟产品开发技术框架,并成功地将其应用于某轻型客车的前悬架改型设计之中。本文建立了整车刚弹耦合动力学分析模型,采用动力学分析软件ADAMS对整车进行了动力学性能分析,确定了改型设计的实施方案,并输出了后续有限元分析工作所需的动载荷;利用数字化模型技术,依据原有的零部件模型,通过修改模型特定数字特征来完成零部件的改型设计;使用有限元分析软件NASTRAN对改型零部件的静、动强度进行了分析,提出改进方案,确保改型设计方案的可靠、可行。整合的方法有效综合了各种开发手段的优势,减少了重复设计时间,避免了在产品开发后期阶段的返工,并增强了物理样机与实际产品性能之间的相似性。

Study on Integrated Virtual Product Development

For simulation and design of the complicated systems like vehicle development,we use an integrated virtual product development frame based on MSC.Software,with which,we have succeeded the project for the front suspension redesign for a light-bus.We build the whole vehicle dynamic model,analyse the dynamic performance using the ADAMS,ensure the reform scenario,and output the dynamic loads for the coming FEA analysis; with the software NASTRAN,the analysis of components' static stress and dynamic stress were performed to ensure the reform scenario was credible.The main benefits of the integrated method are reduction in product design-cycle time,avoidance of design iterations delay in the development process,and increased likelihood that physical prototypes will be closer to production quality.