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Simulation Study on Vehicle Ride Comfort Based on Finite Element Model and Pseudo-Excitation Method

机译:基于有限元模型和伪激励方法的车辆乘坐舒适性仿真研究

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摘要

This research aims to develop a new vehicle ride comfort simulation technology. The basic principle of pseudo-excitation method (PEM) is summarized, and the specific method of PEM is proposed to solve the finite element model (FEM) of vehicle. Taking a simple 7-degree-of-freedom (DOF) car spatial model as an example, the traditional and new methods are compared. Simulation results show that they are completely consistent, thereby verifying the effectiveness of the new method. At the same time, through the simulation process, the new method is simpler and more efficient without deducing complex mathematical formulas and software programming. Finally, the ride comfort simulation of a car’s complex FEM is performed. FEM can consider the parts of the vehicle as elastic bodies and closer to the real vehicle. The PEM transforms random vibration analysis into simple harmonic vibration analysis, which improves the efficiency of the solution greatly. Therefore, the combination of the FEM and the PEM cannot only solve the problem of model accuracy but also the problem of solving efficiency, which has strong practical engineering application value.
机译:本研究旨在开发一种新的车辆乘坐舒适性仿真技术。总结了赝激励法(PEM)的基本原理,提出了求解车辆有限元模型(FEM)的PEM具体方法。以简单的7自由度(DOF)汽车空间模型为例,对传统方法和新方法进行了比较。仿真结果表明,二者完全一致,从而验证了新方法的有效性。同时,通过仿真过程,新方法更简单、更高效,无需推导复杂的数学公式和软件编程。最后,对汽车的复杂有限元模型进行乘坐舒适性仿真。有限元法可以将车辆的部件视为弹性体,更接近真实车辆。质子交换法将随机振动分析转化为简单的谐波振动分析,大大提高了求解的效率。因此,有限元法和质子交换法的结合既解决了模型精度问题,又解决了求解效率问题,具有很强的工程应用价值。

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