轻型载货汽车车架动态特性分析与研究

Research and analysis on dynamic characteristics of light truck

为了改进某轻型载货汽车车架的结构,对边梁式车架进行了一定的简化。考虑到悬架对车架动态特性的影响,建立了车架及悬架系统的几何模型和有限元模型。利用大型有限元软件ANSYS对建立的模型进行了有限元模态分析,获得了车架的模态参数。通过模态分析法对车架模型进行了验证,确定了该车架结构的安全性和可靠性,为后续的动力学分析及实验提供了参考,对车架的设计和结构改进具有一定的指导意义。

For the sake of improving the structure of certain typed light truck frame, certain simplification has been made on side girder typed truck frame. Considering the influence of suspension frame on the dynamic the geometric model and finite characteristics of truck frame, element model of truck frame and suspension frame system were established. Using the large scaled finite element software ANSYS to carrying out finite element modality analysis on the established model, and obtained the mode parameters of truck frame. Verification was carried out on the truck frame by means of modality analysis method, the safety ness and reliability of the truck frame structure was confirmed, thus provided references for the following-up dynamics analysis and test. There are certain guiding significances on the design of frame and the improvement of structure.