期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于动力学仿真的6×6轮式越野车辆总体性能评价 被引量:2
1
作者 王红岩 王钦龙 +2 位作者 芮强 薛劲橹 邓艳奇 《装甲兵工程学院学报》 2012年第6期23-29,共7页
为分析和评价某型6×6轮式越野车辆的总体设计性能,建立了整车多刚体动力学模型、刚柔耦合动力学模型以及悬架系统台架试验模型,计算了整车固有特性,依次进行了悬架系统运动学、行驶动力学、操纵稳定性分析。在计算车体和悬架摆臂... 为分析和评价某型6×6轮式越野车辆的总体设计性能,建立了整车多刚体动力学模型、刚柔耦合动力学模型以及悬架系统台架试验模型,计算了整车固有特性,依次进行了悬架系统运动学、行驶动力学、操纵稳定性分析。在计算车体和悬架摆臂结构模态的基础上,考核了典型行驶工况下车体和悬架部件结构的动态强度,依据国家相关标准,利用仿真结果对6×6整车设计进行了系统的评价,指出了该越野车总体设计性能的不足,为其进一步改进和优化设计提供了参考依据。研究方法对其他轮式越野车辆系统的设计和评价具有一定的参考价值。 展开更多
关键词 车辆动力学 多刚体动力学 结构动态强度 总体性能评价
原文传递
Strength behavior and collapse of spatial-reticulated structures under multi-support excitation 被引量:4
2
作者 YE JiHong ZHANG ZhiQiang CHU Ye 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第6期1624-1638,共15页
Under strong shocks,long-span spatial-latticed structures may collapse due to dynamic instability or strength failure.The elasto-plastic dynamic behaviors of three spatiallatticed structures,including two double-layer... Under strong shocks,long-span spatial-latticed structures may collapse due to dynamic instability or strength failure.The elasto-plastic dynamic behaviors of three spatiallatticed structures,including two double-layer cylindrical shells and a spheri-cal shell used for the 2008 Olympic Games in Beijing,were quantitatively examined under multi-support excitation(MSE) and uniform support excitation(USE).Numerical analyses described several important parameters such as the peak acceleration and displacement responses at key joints,the number and distribution of plastic elements,and the deformation of the shell at the moment of collapse.Results of the analysis revealed the features and the failure mechanism of the spatial-latticed structures under MSE and USE.In both scenarios,the double-layer reticulated shell collapsed in the "overflow" mode,collapse was govrned by the number of invalid plastic elements rather than the total number of plastic elements,and the collapse of the structure began with damage to certain local regions near the supports.By comparing the numbers and distributions of the plastic members under MSE to those under USE,it was observed that the plastic members spread more sufficiently and the internal forces were more uniform under MSE,especially for lower apparent velocities in soils.Due to the effects of pseudo-static displacement,the stresses in members near supports under MSE were higher than those under USE.These regions are prone to failure during earthquakes and deserve special attention in the seismic design of reticulated structures. 展开更多
关键词 multiple support excitation(MSE) uniform support excitation(USE) elastic-plastic time history analysis spatial-latticed structure strength failure
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部