摘要
主要研究了压印接头的混合失效模式,给出混合失效相关概念,分析混合失效模式出现的情况和接头参数,得出其常出现在板材力学性能、流动性和所形成的接头参数较好的情况下,并以1420铝锂合金和TA1钛合金为例比较得知,混合失效模式的承载能力和能量吸收值均为最大,在接头失效过程中兼具了颈部断裂和拉脱失效的特点并在承载能力和承载位移上更优。
This paper is focus on mixed failure mode which is one of failure modes in clinch joint. At present,there is no clear definition of mixed failure mode in any published paper. This paper offers the conception of mixed failure mode and analyzed the situation which mixed failure mode would happen. Mixed failure mode often appears in the situation that the sheets with good mechanical properties,great material flow and prefect parameter of clinched joint section. Load-bearing capacity and buffering capacity of 1420 and TA1 hybrid clinched joint＇s three different failure modes could be compared directly from force-displacement curves and energy absorption. The result showed that mixed failure mode had excellent performance because it showed characteristics both from neck fracture and button separation mode.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2016年第3期82-85,共4页
Aerospace Materials & Technology
基金
国家自然科学基金资助项目(50965009)
云南省重大专项项目(ZD201504)
关键词
压印接头
混合失效模式
载荷-位移曲线
能量吸收
Clinched joint
Mixed failure mode
Force-displacement curves
Energy absorption
