摘要
为提高汽车座椅骨架的开发质量,在某型汽车座椅骨架开发中应用CAE技术进行骨架静强度和疲劳等模拟.采用壳单元与梁单元相结合建立座椅骨架有限元模型;根据座椅骨架台架耐久试验要求和试验条件,对座椅安装孔进行全约束处理,并在试验加载位置施加相应的载荷;采用Abaqus/Standard分析座椅骨架强度;在静强度分析基础上应用FEMFAT/BASIC进行座椅骨架疲劳分析.针对疲劳分析暴露出的座椅靠背连接件折弯位置的薄弱环节,通过结构优化设计,提高零件材料性能,增强区域强度,有效降低座椅骨架疲劳损伤.试验证明改进方案满足台架耐久试验要求.
To improve the quality of automotive seat frame,CAE technique is applied to the simulation of frame static strength and fatigue in the development of an automotive seat frame.The finite element model of seat frame is established by combing shell elements with beam elements;according to the requirements and conditions of bench durability test,the full constraints are performed on the seat mounting holes,and the relative loads are applied on the test position;the strength of seat frame is analyzed by Abaqus/Standard;the seat frame fatigue is analyzed by FEMFAT/BASIC based on the static strength analysis.The weakness at connection bending position of seat back is discovered by fatigue analysis,so the structural optimization design is implemented to improve component material characteristics and enhance region intensity,and the fatigue damnification of seat frame can be effectively decreased.The test indicates that the improved scheme meets the requirements of bench durability test.
出处
《计算机辅助工程》
2011年第2期79-81,共3页
Computer Aided Engineering
关键词
车辆座椅
骨架
强度
疲劳
automotive seat
frame
strength
fatigue
