共查询到20条相似文献,搜索用时 133 毫秒
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以某重型牵引车车架为研究对象,建立了该型车架的有限元模型,进行了车架模态的仿真与试验,并将结果进行了对比分析,验证了有限元模型的准确性;根据重型牵引车的承载特点和行驶工况,对该车架在满载弯曲工况和满载扭转工况进行静态应力分析,考察车架在典型工况下的应力分布,以此评价车架设计的合理性。在此基础上,对车架的连接横梁进行了结构优化,对改进方案进行了有限元分析,并通过DOE分析确定了最优方案。通过车架结构优化设计及工程实践,反映了利用有限元法进行车架的设计和分析,具有精确可靠、周期短、费用低的优势,显示出了广泛的应用前景。 相似文献
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DL4100型半挂牵引车车架弯扭工况强度分析及改进 总被引:2,自引:0,他引:2
根据半挂牵引车的实际运行状况,选择对半挂牵引车车架强度影响较大的弯扭工况进行分析.利用ANSYS软件建立了DL4100型半挂牵引车车架有限元分析计算模型,通过计算得出了该车架在弯扭工况下的应力分布和变形情况.由于该车架前部所受应力较小,因此把第2横梁去掉后重新做了弯扭工况下的强度分析,改进后的车架满足强度要求. 相似文献
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客车车身骨架结构刚度特性分析 总被引:1,自引:1,他引:1
讨论了客车车身骨架有限元模型的建立及其实验验证,在此基础上对车身骨架结构进行了水平弯曲、极限扭转工况的模拟计算,得到结构的应力、应变、扭矩和弯矩分布情况。进行了模态分析,获得车身骨架的模态参数之后,探讨了该车身骨架的动态性能,为动态性能改善提供参考依据。 相似文献
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在ANSYS中建立客车骨架的有限元板梁单元模型,并通过电测试验验证;利用ANSYS软件对客车整车进行有限元模态分析,谐响应验证分析;最后通过实车行驶振动试验,验证模态分析和谐响应分析的正确性。 相似文献
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介绍了水陆两栖专用车车架的结构特点,在ANSYS中建立了基于板壳单元的车架有限元计算模型,并利用link11与beam4单元模拟悬架,对该有限元计算模型作了满载静态工况下的应力及变形分析,校核了该车架的强度与刚度,并对车架作模态分析,得到了车架的固有频率及振型特征,并提出了设计车架的改进意见。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(11):975-990
The vibration characteristics of the door panels are affected by the weatherstrip seals used in between the doors and vehicle body along the perimeter of the doors. The weatherstrip seals exhibit nonlinear and viscoelastic material properties that vary with frequency, temperature, strain rate and amplitude, and previous load history. The material properties of the seal must be investigated carefully in order to predict the vibration characteristics of the automobiles under different loading conditions. In this study, we developed hyperelastic and viscoelastic models of the weatherstrip seal to predict dynamic performance of a vehicle door and its effect on the overall vehicle dynamics. For this purpose, first, static compression and stress relaxation experiments were performed on the seal using a robotic indenter equipped with force and displacement sensors and then a finite element model utilising the results of these experiments was developed in ANSYS. Finally, a representative model of the seal was integrated into the finite element model of the vehicle door to investigate its effect on the vehicle vibrations. The model predictions were validated using experimental modal analysis performed on the vehicle door with and without the seal. It was observed that the seal has a significant effect on the vehicle dynamics. 相似文献