摘要
根据微型客车车身的结构的特点,利用有限元分析和振动模态试验相结合的方法,提出将车身简化为由空间杆、空间薄壁杆及薄壳单元组成的结构,并用对称与反对称原理取其车身一半作为研究对象,再施加必要的约束条件,建立了力学与数学模型。并编制了一套动力分析软件,利用微机对HH1012X微型车车身进行了动力有限元分析计算,其结果与试验基本一致。
According to the structural features of mini-bus body, by using themethod of finite element analysis and vibration model, this paper puts. forward a simpli-fied body model which is composed of space frame elements, space thin-wall bar ele-ments and thin shell elements. Taking half of the body as the object of study, consider-ing the necessary restrain conditions, the calculating model was established by the use ofprinciples of symmetry and anti-symmetry. As an example, we carried out the dynam-ic finite analysis of mini-bus body of HH1012X on the computer using the program wedesigned. The results agree with the experiment results in the main.
关键词
有限元
微型客车
车身
客车
dynamic finite element method
mini--bus
model experiment
