摘要
为降低制造商进行实车可靠性试验的成本,提出一种虚拟仿真代替实车可靠性试验的方法。以某款城市客车为研究对象,首先在ADAMS/Car软件中根据客车设计参数建立整车动力学模型,并将B级二维随机路面扩展为三维。基于城市客车四工况循环构建仿真循环工况,在三维随机路面上进行动力学仿真,提取悬置与车身骨架连接点的载荷谱。最后将载荷谱导入Ncode软件对骨架进行疲劳寿命预测,得出骨架的寿命为12.08万千米,不满足相关标准要求,故对其进行优化,优化后骨架的寿命为44.09万千米,满足相关标准要求。此研究方法有助于减少可靠性试验次数,加快车辆设计的进程。
In order to reduce the cost for manufacturers to carry out real vehicle reliability tests,a method of virtual simulation in⁃stead of real vehicle reliability tests is proposed.Taking a certain city bus as the research object,firstly,the vehicle dynamics mod⁃el is established in the ADAMS/Car software according to the bus design parameters,and the B-level 2D random road surface is expanded to 3D.The simulation cycle was constructed based on the four driving cycle of city bus,and the dynamic simulation was carried out on the 3D random road surface to extract the load spectrum of the connection point between the suspension and the body frame.Finally,the load spectrum is introduced into Ncode software to predict the fatigue life of the frame,and the life of the frame is 120,800 kilometers,which does not meet the requirements of related standards,so it is optimized.The optimized life of the frame is 440,900 kilometers to meets the requirements of relevant standards.This research method helps reduce the number of reliability tests and accelerate the vehicle design process.
作者
龚智伟
黄伟
赖志坚
王坤羽
GONG Zhi-wei;HUANG Wei;LAI Zhi-jian;WANG Kun-yu(College of Mechanical Engineering,Guangxi University,Guangxi Nanning 530004,China)
出处
《机械设计与制造》
北大核心
2021年第11期172-176,共5页
Machinery Design & Manufacture
基金
广西创新驱动发展专项资金资助项目(AA18242033)。
