摘要
车体底架作为车体的主要承载部件,其底架横梁截面形式对车体的力学特性起决定作用,实际设计中,往往需要对车体底架横梁的设计参数进行反复修改论证,延长了设计的周期。从加快仿真分析流程,提高研发设计效率的角度出发,文中提出了一种基于板梁混合单元的有限元建模方法,并依据车体常用的EN 12663设计评价标准,分别对板壳有限元模型和板梁混合有限元模型进行仿真分析计算,得到了两种不同建模方式的仿真分析结果。并在此基础上,对两种不同建模方式从刚度、强度等方面进行对比评价,结果表明,在车体强度和刚度方面,采用板梁混合建模的方式能够在保证结果精度的前提下对板壳有限元模型起到很好的替代作用。
The underframe of the car body is the main load-bearing component of the car body,and the cross-sectional form of the underframe beam determines the mechanical characteristics of the car body.In actual design,it is often necessary to repeatedly modify and demonstrate the design parameters of the car body underframe beam.Extend the design cycle.From the perspective of speeding up the simulation analysis process and improving the efficiency of R&D and design,this paper proposes a finite element modeling method based on the plate-beam hybrid element,and according to the commonly used EN 12663 design evaluation standard for the car body,the finite element model of the plate and shell The finite element model mixed with the slab beam was used for simulation analysis and calculation,and the simulation analysis results of two different modeling methods were obtained.And on this basis,the two different modeling methods are compared and evaluated in terms of stiffness and strength.The results show that in terms of car body strength and stiffness,the use of plate-beam hybrid modeling can ensure the accuracy of the results.It is a good substitute for the plate and shell finite element model.
作者
杨畅
商维
刘斌
唐菀
YANG Chang;SHANG Wei;LIU Bin;TANG Wan(Chinese Zhongche Chengdu Locomotive Vehicle Co.,Ltd.,Sichuan Chengdu 610511,China;Chinese Aecc Sichuan Gas Turbine Research Establishment,Sichuan Chengdu 610500,China)
出处
《机械设计与制造》
北大核心
2024年第7期111-115,共5页
Machinery Design & Manufacture
关键词
全尺寸车体
有限元仿真
板梁混合模型
强度计算
刚度计算
Full-Scale Car Body
Finite Element Simulation
Plate-Beam Hybrid Model
Strength Calculation
Stiffness Calculation
