摘要
该文提出了一种新的解决汽车车身结构的强度、刚度和在复杂动态载荷下响应问题的设计思路,即以基于特征体系的三维车身结构模型为核心,在强度、刚度和动态特性等动力学指标与结构特征参量之间建立起直观联系,降低了汽车车身结构设计中的盲目性。与传统的样车试验和单纯的有限元分析相比,可大大提高新车开发和旧车改型的设计效率。文中建立了某微型车的特征模型,并对其进行了理论计算和试验分析,两者在模态振型、固有频率和相对阻尼系数等方面都有较高的一致性,证实了本方法的实用性和可行性。
In this paper, a new idea is proposed to solve the problems such as strength, stiffness, and the response to complex dynamic load of the car body.The core is 3-D car body structure model based on feature architecture. Therefore the intuitionistic relationship is built between dynamic index (i.e., strength, stiffness, and dynamic characteristic) and structure feature parameters so as to reduce the blindness in design. The design efficiency is greatly improved in developing new car or remodeling old product compared with the traditional physical experiment and finite element analysis. The theoretical calculation and analysis of the experiment are processed on the feature model of a special mini-car in this paper. The practicability and feasibility of this way has proved with the consistency of the modal shape, natural frequency and relative damping coefficient.
出处
《计算机仿真》
CSCD
2004年第12期219-222,共4页
Computer Simulation
关键词
车身结构
动态特性
计算机仿真
Body structure
Dynamic characteristic
Computer simulation
