半热滑轨温度和应力的三维有限元数值模拟

Three dimensional finite element numerical simulation of temperature and stress in modest hot slide

以热弹性理论为基础，采用ANSYS顺序耦合有限元程序对加热炉半热滑轨在不同外形参数下的传热、应力和应变进行了三维数值模拟。结果表明，其端面最高温度随着滑轨高度的增大而升高，随着滑轨长度的增长而稍有降低，在相同的高度和长度下，梯形滑轨比矩形滑轨的端面最高温度低15～20℃；其最大应力位于坡口堆焊金属与滑轨的焊缝处，其值随着滑轨高度和长度的增大而增大，在相同的几何尺寸下，矩形滑轨大于梯形滑轨。

On the base of the thermal-elastic theory,the three-dimensional finite element numerical analysis simulated distribution of temperature,strain and stress in the modest hot slides with ANSYS sequential coupling analyzing heat transfer and stress equations.The results show that the highest temperature rises with increasing of height of the slide and reduces with increasing of length of the slide,and the highest temperature of trapezoid slide is lower 15-20 ℃ than that of rectangle slide at the same time.The highest equivalent stress for the rectangle slide is bigger than that of the trapezoid slide at the same time,and it lies in weld and rises with increasing height and length of the slide.