航空轮胎胎坯径向均匀性建模分析

Modeling and Analysis on Radial Uniformity of Green Tire of Aircraft Tire

采用Creo三维软件对720×320航空轮胎胎坯进行建模与运动学模拟,采集由于部件搭接误差和接头定点分布偏移产生的胎坯径向力波动数据,利用Design-Expert软件进行响应面分析,获得胎坯成型过程中部件贴合测控数学模型。研究结果表明:不同速度下,部件搭接误差和接头定点分布偏移与胎坯径向力波动之间的关系用四阶响应面方程表示,方程的拟合效果最佳;对胎坯径向力波动影响较大的因素是胎面长度平方和左胎侧长度平方与带束层长度平方乘积等。

In this study,modeling and kinematic simulating of the 720×320 green tire of aircraft tire was carried out by using three-dimensional software Creo.The data of the radial force fluctuation of the green tire caused by the lapping error of the components and the distribution offset of the fixed joints were collected.The response surface analysis was carried out by using Design-Expert software,and the mathematical model of measurement and control of components lamination in the building process of the green tire was obtained.The results showed that the relationship between the lapping error of the components and the distribution offset of the fixed joints and the radial force fluctuation of the green tire was expressed by the fourth-order response surface equation,which gave the best fitting results.The factors that significantly influenced the radial force fluctuation of the green tire were the square of the tread length,the product of the square of the left sidewall length and the square of the belt length,and so on.