| 基于组合结构的重车车架建模仿真及断裂分析 |
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| 引用本文： | 张勇,张力,徐宗俊,袁丁. 基于组合结构的重车车架建模仿真及断裂分析[J]. 计算机仿真, 2005, 22(12): 218-221 |
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| 作者姓名： | 张勇 张力 徐宗俊 袁丁 |
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| 作者单位： | 重庆大学机械工程学院,重庆,400044;重庆红岩汽车有限责任公司,重庆,400044 |
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| 摘 要： | 该文提出基于组合结构的有限元方法概念，讨论车架组合结构各主要连续体部件之间的物理作用关系及其有限元模型的建模仿真方法。通过对某重型载重货车双层主副梁车架结构位移场和应力场的模拟，阐释多层板件叠合域间的滑移面约束构造特征，比较不同的螺栓等效模型对板件联接计算数值的影响，并将板簧支架结构融入到车架模型；从分析结果中找出车架连接板开裂的原因，并提出强化设计方案，进行了改进前后的车架强度对比，且以路面试验验证了强化设计的合理性。
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| 关 键 词： | 车架 组合结构 有限元方法 仿真模型 强化设计 |
| 文章编号： | 1006-9348(2005)12-0218-04 |
| 修稿时间： | 2004-07-26 |
Simulation of Heavy Vehicle Frame Based on Assembled Structures and Analysis on the Frame Fracture |
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| ZHANG Yong,ZHANG Li,XU Zong-jun,YUAN Ding. Simulation of Heavy Vehicle Frame Based on Assembled Structures and Analysis on the Frame Fracture[J]. Computer Simulation, 2005, 22(12): 218-221 |
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| Authors: | ZHANG Yong ZHANG Li XU Zong-jun YUAN Ding |
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| Affiliation: | ZHANG Yong1,ZHANG Li1,XU Zong-jun1,YUAN Ding2 |
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| Abstract: | A concept of FEM for assembled structures is put forward, and then is applied to a model building for vehicle frame with its physical acting relations between major components discussed. By simulating the deformation and stress state of the heavy vehicle frame, MPC of slide surface and equivalent model of bolts and brackets are described, then the reason for connecting boards fatigue crack is determined and a strengthening scheme is introduced. Its validation is verified by the strength analysis in comparison with the original frame model and by the working experiment on road. |
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| Keywords: | Vehicle frame Assembled structures FEM Simulation model Strengthening design |
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