摘要
通过建立欧拉模型,研究搅拌摩擦焊接过程中搅拌头-焊接工件接触面材料的流动规律以及热输入,确定了搅拌摩擦焊接中接触面滑移系数与搅拌头转速之间的关系式,发现接触面滑移系数随搅拌头转速的增加而降低。通过与已知试验数据的对比,验证了所建立公式和模型的正确性;进一步发现,塑性变形产热对搅拌摩擦焊接过程中的热贡献超过35%。
The material flow rules and the heat input on the tool-workpiece contact surface were investigated based on the established Eulerian model. The formula relation between the slipping factor and the rotating speed was determined. The slipping factor on the contact surface was decreased with the increase of the rotating speed. By the comparison with experimental data, the Eulerian model was validated. It was also found that the heat contribution from plastic dissipation exceeded 35%.
出处
《塑性工程学报》
CAS
CSCD
北大核心
2012年第6期130-133,共4页
Journal of Plasticity Engineering
基金
国家自然科学基金资助项目(11172057
11232003)
国家重点基础研究发展计划资助项目(2011CB013401)
国家高技术研究发展计划资助项目(2012AA050901)
关键词
搅拌摩擦焊接
欧拉模型
滑移系数
界面行为
friction stir welding
Eulerian model
slipping factor
interface behavior
