摘要
综合考虑焊接过程中的高频摩擦生热和塑性变形生热,建立了二维有限元模型,用于模拟铝合金(AA6061)薄片超声波焊接的温度场与应力场分布,并分析了焊接压力、焊接时间及材料的厚度等对焊接过程中材料的瞬态温度与应力分布的影响规律.结果表明,在超声波金属焊接的过程中,焊接时间和焊接压力对温度与应力的分布起到了主要作用.
Heat generation due to high-frequency friction and plastic deformation in the welding process was considered.A two-dimensional finite element model was established to simulate the ultrasonic welding of aluminum alloy foil(AA6061).The effect of ultrasonic welding pressure,welding time and material thickness on the distribution of the material transient temperature and stress in the welding process was analyzed using this model.The results show that the weld time and weld pressure have a great effect on the distribution of temperature and stress in ultrasonic metal welding.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2010年第S1期54-57,共4页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金项目(50865007)
江西省青年科学家(井冈之星)培养计划资助
江西省教育厅2010年度重点科技项目(GJJ10013)
教育部留学回国人员科研启动基金资助项目
关键词
铝合金
超声波金属焊接
塑性变形
温度分布
有限元分析
aluminum alloy
ultrasonic metal welding
plastic deformation
temperature distribution
(finite) element analysis
