轿车内饰件包覆成型过程温度场变化对制件成型质量的影响

Simulation on influence of temperature field on composite glued structure of car interior

利用仿真模拟软件,在分析制件表皮施加位移对包覆成型制品质量影响的基础上,考察表皮温度对接触面强度的影响。研究过程中,对模型进行温度-位移耦合,加载方式不变,改变温度和加载位移。研究结果表明,在相同的温度变化差下,不同位移的模拟结果特征相似。温度降低会加快胶层的损伤和失效,使失效载荷的值增大;温度升高会促进胶层起始损伤,但延缓胶层失效,使失效载荷的值降低。温度升高和降低均会引起应力变化,且变化的趋势为由内向外逐渐增大,加载过程中剥离力由位移载荷和应力共同提供。

In this paper,the influence of surface temperature on the strength of contact surface is investigated based on the influence of displacement on the quality of overmolded products by simulation software.In the process of research,the model is coupled with temperature and displacement,the loading mode is unchanged,and the temperature and loading displacement are changed.Through comparison,it is found that the simulation results of different displacements have similar characteristics under the same temperature difference.The decrease of temperature will accelerate the damage and failure of adhesive layer,and the value of failure load will increase;Increasing temperature will promote the initial damage of adhesive layer,but delay the failure of adhesive layer and reduce the value of failure load.The increase and decrease of temperature will cause the change of stress,and the change trend is gradually increasing from inside to outside.The peeling force is provided by displacement load and stress in the loading process.