摘要
针对自主设计研发的总功率为9600kW的6轴新型重载电力机车的突出问题,要解决在纵向牵引制动载荷增加的条件下,车体挠度明显增大、工作应力大大增加,同时又要合理减重。为此,利用ANSY有限元软件,针对新型重载电力机车的特点,首先借鉴国内外车体结构技术标准和重载机车的实际运行状态研究确定了机车的载荷工况,并对车体结构的强度和刚度进行了有限元分析;根据各种工况下应力的分布特点,并基于抗疲劳破坏的观点,分析了车体结构所存在的问题,并提出了相应的改进方案。比较分析的结果表明,改进方案既保证了车体的刚度与强度,又收到了比较明显的减重效果,是一种比较合理的改进结构。
One of the outstanding problems for the new 6 axis heavy haul electric locomotive with total power of 9600kW, designed and developed by our country independently, is to solve the problem of the increase in deflection and stress of earbody under the conditions that the braking load of longitudinal traction has increased significantly, while the weight reduction should be reasonable. Therefore, according to the characteristics of new heavy haul electric locomotive, the strength and stiffness of carbody structure are analyzed by FE software of ANSYS based on the load cases determined by both the technical standards at home and the abroad and the actual running status of the heavy haul locomotive. The existing problems are analyzed and the improved scheme is put forward according to the distribution features of stresses in different loadcases and on the basis of the viewpoint of fatigue failure. The improved structure is reasonable because not only the stiffness and strength of carbody can be ensured, but also the effect of weight reduction is significant.
出处
《计算机仿真》
CSCD
北大核心
2009年第5期282-285,共4页
Computer Simulation
关键词
电力机车
重载
车体
结构分析
有限元
Electric locomotive
Heavy haul
Carbody
Structure analysis
Finite element
