基于线性规划的轨道交通车辆装配车体挠度调整方法研究

Research on Deflection Adjustment Method of Rail Transit Vehicle Assembly Carbody Based on linear Programming

针对装配车体挠度调整过程中存在过程麻烦、容易出错、人力耗费大的问题,文章从装配车体模型入手,研究基于线性规划的轨道交通车辆装配车体挠度调整方法。通过建立装配车体有限元模型,求解装配车体调整过程各调整点调整力与装配车体挠度变形关系。通过三次样条曲线拟合方法对装配车体挠度变形曲线进行拟合,并利用线性规划方法求解最优装配车体挠度调整方法。结果表明,利用该方法可快速计算出各调整点挠度调整力最小的最优调整方法,指导技术人员对装配车体进行调整。

In view of the problem of troublesome process,error-proneness,and high labor cost in the assembly car body deflection adjustment process,this paper starts with the assembly car body model and studied the rail transit vehicle assembly car body deflection adjustment method based on the linear programming method.By establishing a finite element model of the assembly car body,the relationship between the adjustment force of each adjustment point and the deflection of the assembly car body during the adjustment process of the assembly car body is solved.The cubic spline curve fitting method is used to fit the deflection deformation curve of the assembly car body,and the linear programming method is used to solve the optimal assembly car body deflection adjustment method.The results show that this method could quickly calculate the optimal adjustment method with the smallest deflection adjustment force at each adjustment point,and guide the technicians to adjust the assembled car body.