The existing powertrain mounting models of the heavy-duty truck for optimizing the mounts parameters cannot well describe the deformation of the chassis frame. To overcome this disadvantage, a new full vehicle model is proposed which embraces the view of system modeling and includes the frame flexibility. The model can achieve optimal parameters of the Powertrain Mounting System for isolating the vibration transmitted from the powertrain to the chassis. A model reduction technique, improved reduced system, is used to obtain a reduced model of the frame to represent its original large-scale finite element analysis model for the accessibility of time-efficient solutions of the model. The reduced frame model is integrated with the powertrain mounting and suspension model to form the full dynamic model of the vehicle. The accuracy and effectiveness of the proposed model are evaluated by its original vehicle model built in software ADAMS and an existing rigid model with rigid foundation. A hybrid model optimization strategy is also presented to tune the dynamic parameters of the powertrain mounts using the developed coupling model. The simulation results show that the proposed coupling model has better representation of the dynamic characteristics of the real vehicle system, and the presented hybrid model optimization strategy can obtain better optimization results compared with the existing rigid model with rigid foundation. In addition, the application of the proposed model can also be extended to the vibration control and the structural fatigue prediction.

中文翻译：

---

考虑底盘车架灵活性的用于优化动力总成悬置系统的重型卡车压缩动力学模型

现有的重卡动力总成悬置模型优化悬置参数不能很好地描述底盘车架的变形。为了克服这个缺点，提出了一种新的整车模型，它包含系统建模的观点并包括框架的灵活性。该模型可以实现动力总成悬置系统的最佳参数，以隔离从动力总成传递到底盘的振动。模型简化技术，改进的简化系统，用于获得框架的简化模型，以表示其原始的大型有限元分析模型，以获取模型的时间效率解决方案。简化的车架模型与动力总成悬置和悬架模型相结合，形成车辆的全动态模型。所提出模型的准确性和有效性通过其在软件ADAMS中内置的原始车辆模型和现有的具有刚性基础的刚性模型进行评估。还提出了一种混合模型优化策略，以使用开发的耦合模型来调整动力总成支架的动态参数。仿真结果表明，所提出的耦合模型能够更好地反映实车系统的动态特性，与现有的刚性基础刚性模型相比，所提出的混合模型优化策略可以获得更好的优化结果。此外，所提出模型的应用还可以扩展到振动控制和结构疲劳预测。