基于滚动状态轮胎温度场的稳态热分析

STEADY STATE THERMAL ANALYSIS ON TEMPERATURE FIELD OF TIRE BASED ON ROLLING STATE

首先阐述了轮胎温升机理 ,即轮胎应力、应变与温度的关系 ,然后以试验数据为基础 ,分析了基于滚动状态轮胎稳态热状况 ,应用回归技术对试验数据进行了回归分析 ,建立了稳态时轮胎表面温升与工作条件 (速度、载荷、胎压及环境温度 )单因素变化回归方程 ,并分析了稳态时轮胎内部温度场分布 ;应用多元回归技术建立了轮胎表面稳态温度与工作条件多因素变化回归方程 ,并对其进行了F分布检验 ,表明所建回归方程可信度很高。回归方程可用于初步预测轮胎温升及指导轮胎设计 ,同时 。

The mechanisms of tire temperature rise are expounded firstly,namely,the relationships of tire stress strain and its temperature.Then,on basis of the experimental data,the steady state thermal status of a tire based on rolling is analyzed.The experimental data are regressed on rolling is analyzed.The experimental data are regressed by means of regression technique.The formula of single factor is built between tire surface temperature rise and operating conditions,including speed,load,inflation pressure and ambient temperature respectively.Meanwhile,the tire internal temperature distributions in steady state are analyzed.The formula of multi factor is built between tire surface temperature and operation condition also,the gained regression equation was high reliable by means of the F testing.The regression equation can be applied to initially predict tire temperature rise and instruct tire design,with which supplies the foundation to study tire blow out mechanism and put forward prevetive measures at the same time.