| 基于应力优化的大客车结构多目标优化 |
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| 引用本文： | 丁炜琦,苏瑞意,桂良进,范子杰.基于应力优化的大客车结构多目标优化[J].汽车技术,2010(4). |
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| 作者姓名： | 丁炜琦 苏瑞意 桂良进 范子杰 |
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| 作者单位： | 清华大学汽车安全与节能国家重点实验室 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对某全承载式大客车进行了结构有限元分析,研究了该客车结构强度、振动模态频率、质量等多个性能目标的优化设计问题.分析结果表明,该客车初始设计模型的刚度满足设计要求但应力较大.强度储备不足,因此采用优化结构最大应力的方法进行优化.经过两个阶段的优化设计,显著降低了结构最大应力.提高了一阶扭转频率,减轻了车身骨架质量,客车结构设计更为合理.
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| 关 键 词： | 客车 全承载式 有限元 结构优化 |
Multi-objective Optimization on Bus Structure based on Optimized Stress |
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| Ding Weiqi,Su Ruiyi,Gui Liangjin,Fan Zijie.Multi-objective Optimization on Bus Structure based on Optimized Stress[J].Automobile Technology,2010(4). |
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| Authors: | Ding Weiqi Su Ruiyi Gui Liangjin Fan Zijie |
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| Institution: | State Key Laboratory of Automotive Safety and Energy Conservation/a>;Tsinghua University |
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| Abstract: | Structural FE analysis on an integral bus is performed,in which optimal design of multiple performance objectives of structural strength,vibration modal frequency and mass is researched.The result of finite element analysis shows that the stiffness of the initial design model of the bus meets design requirements,but the stress is very high and the strength reserve is relatively poor,therefore,the optimization method which optimizes the maximum stress of structure is adopted.After the optimal design of two s... |
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| Keywords: | Bus Integral Finite element Structural optimization |
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