摘要
对于多分支整体异形空心薄壁断面混杂纤维复合材料自行车车架 ,由于复杂的空间曲面构形和纤维铺设连续性要求成为其CAD技术难题。为此 ,采用分块建模和网格细化技术以控制其曲面走向 ,生成等距网格 ,解决了有限元网格划分难题。利用有限元分析计算和冲击疲劳试验 ,确定了混杂纤维复合材料自行车车架的混杂比、混杂方式 ,并进行了优化设计。经验证及产品质量检测 ,按优化结果铺设成型的车架 ,充分利用了连续纤维的“混杂效应” ,既能满足自行车的各项性能指标 ,又使材料消耗最小。
Due to the requirements of complex configuration of spatial curved surfaces and of continuity of fiber laying have becoming a difficult problem in CAD technology for bicycle body frame of hybrid fibered compound material with multi-branch special shaped entire-body and sections of hollowed thin wall. For this reason, the separate block modeling and grid refining technique are adopted to control the trend of curved surface and to generate equal spaced grids, thus the hard problem of finite element grids differentiation was solved. By utilizing the finite element analytical calculation and impacting fatigue test, hybrid ratio and mode of hybrid of bicycle frame in hybrid fiber compound materials were determined, and the optimal design was carried out. Through verification and detection of product quality, the frame being laid into a formed shape according to the optimized result has sufficiently utilized the 'hybrid effect' of the continuous fiber, thus it could not only satisfy every functional index but also let the material consumption to be a minimum.
出处
《机械设计》
CSCD
北大核心
2004年第3期25-26,36,共3页
Journal of Machine Design
基金
河南省科技攻关资助项目 (991 0 80 0 0 7)
