【摘要】 基于ANSYS,通过对高强铝厚板搅拌摩擦焊的三维温度场有限元数值模拟,定量分析了厚板搅拌摩擦焊中最重要的工艺参数———旋转速度对搅拌区焊接温度场的影响。结果表明,在厚板焊接时,随着旋转速度增加,搅拌区温度总体升高,且高温区的贯穿深度增加。分析表明焊缝金属流变区最低温度在靠焊件底面搅棒表面处,该温度是限制厚板搅拌摩擦焊接性和焊接速度的主要因素。更多还原

【Abstract】 Based on ANSYS, the three.dimensional finite element numerical simulation of stir-welding of thick high-strength-aluminum plate was carried out. The quantitative analysis shows the relation between the welding revs and the temperature-field of stir zone. The result shows that the temperature of stir zone and the depth of high temperature zone are both increased with the increasing of welding revs. It also shows that the minimum temperature of stir-zone appears near the bottom surface of stir-pin. The minimum temperature is the main factor that restrict- ed the increase of the welding mechanical property and welding speed of thick plate.更多还原