摘要
针对一种新型重载电力机车车体纵向载荷大、自身轴重轻的特点,通过合理分配车体质量和在高应力区使用高强度钢来解决由此引起的车体工作应力明显增大,结构整体刚度减小等问题。为此,利用ANSYS软件建立车体结构的有限元模型,根据AAR M1001和EN12663-1标准确定车体结构静强度载荷工况,评估车体结构的静强度和模态;利用ANSYS/FESAFE软件,基于名义应力法,根据在最恶劣的实际运行线路上的实测纵向载荷谱,对车体结构的疲劳寿命进行预测。计算结果表明,车体结构的静强度、刚度和疲劳寿命均达到设计要求。
In the structural strength optimization design study of overloading electric locomotives, for a new type of overloading electric locomotive with the characteristic of high longitudinal load and low axle load, the stress of car- body increase and stiffness decrease were solved by reasonable distribution of carbody mass and high strength steel in high stress area. Finite element model was established using ANSYS software, and the load cases for static strength were decided by AAR M1001 and EN126631 standard. Then the carbodyg static strength and modal were evaluated. The fatigue life was predicted with the ANSYS and FESAFE software using nominal stress method under the longitudi- nal load spectrum measured in the worst actual operation line condition. The result shows that the static strength, stiff- ness, and fatigue life for the carbody are all meet the design requirements.
出处
《计算机仿真》
CSCD
北大核心
2014年第2期230-234,共5页
Computer Simulation
基金
"十一五"国家科技支撑项目(2009BAG12A02)
关键词
重载电力车体
有限元分析
静强度
模态分析
疲劳寿命预测
Overloading electric locomotive
FEA
Static strength
Modal analysis
Fatigue life prediction
