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在车辆轻量化的过程中 ,车体承载结构的轻量化显得尤为重要。车体承载结构的轻量化 ,要保证车体的强度、刚度和动态特性等满足提速客车的要求。文中利用ANSYS软件建立 2 5K型硬卧客车车体轻量化前后的有限元模型 ,计算车体的强度、刚度和模态 ,并对轻量化前后的车体作对比分析 ;然后 ,用NUCARS动力学分析软件建立 2 5K型硬卧客车系统的数学模型 ,分析弹性振动对平稳性的影响 ,并就刚性车体模型和轻量化前后的弹性车体模型对平稳性和加速度响应的影响作对比分析
In the process of lightweight vehicles, lightweight car body load structure is particularly important. Car body load-bearing lightweight structure, to ensure that the body strength, stiffness and dynamic characteristics to meet the requirements of speeding passenger cars. In this paper, ANSYS software was used to establish the finite element model before and after the light weight of 25K hard-sleeper passenger car body to calculate the strength, stiffness and modal of the car body, and to compare the body before and after the light weight reduction. Then, using NUCARS dynamic analysis Software A mathematical model of a 2 5K hard-sleeper bus system was established to analyze the influence of elastic vibration on the stability. And the comparative analysis of the effects of rigid body model and elastic body model before and after light-weight on the stability and acceleration response