客车车身骨架参数化设计方法研究

Research on Parametric Design Method of Bus Body Frame

基于Catia平台,运用了参数化设计原理,比较了2种客车车身骨架参数化设计方法。第1种方法是利用结构设计模块进行客车车身骨架参数化设计,该方法的关键点在于开发并补全了符合国内客车行业标准的型材库;第2种方法则是在创成式曲面设计模块下,利用用户自定义特征的方法,建立参数化模型。对比2种参数化设计方法在应用中的优缺点,前者高效且易于结构件的快速建立与修改,后者模型容易修改且布尔操作方便,给设计者提供了一定的指导意义。

Based on the Catia platform,two parametric design methods of bus body frame were compared by using the parameterized design principle.The first method is to use the structural design module to carry out the parameterized design of bus body frame which developed and completed the profile library that conforms to the domestic bus industry standards.The second method is to create a parametric model by using the method of user-defined features under the generative surface design module.By comparing the advantages and disadvantages of the two parametric design methods in application,the former is easy to setup and modify the structure,the latter is easy to modify the model and boolean manipulation.