虚拟试车场技术预报载货汽车底盘耐久性研究

针对载货汽车开发过程中传统耐久性试验周期长、费用高的缺点,以某耐久性试车场道路为输入条件,应用虚拟试车场技术(VPG)建立了整车虚拟仿真模型.模拟分析载货汽车底盘动应力响应,并与相同路况下的实车试验测试结果进行了对比研究.结果表明,测试结果与VPG模拟结果在时域与频域上的趋势基本一致.在此基础上,运用疲劳分析软件FEMFAT4.7实现了对载货汽车底盘耐久性的有效预报.

Study on Truck Chassis Durability Using Virtual Proving Ground

To address the disadvantages of truck development such as prolonged durability test cycle and high development expense, we have used virtual proving ground (VPG) technique to establish a virtual vehicle simulation model with road of a durability proving ground as input conditions to simulate and analyze dynamic stress response of a truck chassis and compared it with test results of real vehicle test under the same road conditions. The results show that the test results are basically identical with VPG simul...