铝锂合金同异质自冲铆接头静力学性能研究

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铝锂合金同异质自冲铆接头静力学性能研究
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作者单位:昆明理工大学机电工程学院
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中图分类号::TH131. 1
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Static Properties of Self-Piercing Riveted Joints in Similar orDissimilar Sheets About Aluminum-Lithium Alloy

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摘要:

以1420 铝锂合金(AL1420)为载体制备其同质及其与H62 铜合金( H62)、Q215 镀锌钢( Q215)

和TA1 工业纯钛(TA1)异质单搭自冲铆接头。通过静力学试验分析各种接头的静失效载荷及能量吸收性能;

就其失效模式分析推断其宏观失效机理。结果表明:TA1-AL1420 接头静失效载荷最高,Q215-AL1420 接头能

量吸收性能最强;除TA1-AL1420 接头外,其余各组接头失效位移呈现出的大小规律与能量吸收值的高低规律

一致。当上下板材屈服强度相差不大时,接头的失效模式均为下板与铆钉分离;相差较大时,主要以屈服强度

较低板断裂失效。

Abstract:

1420 aluminum鄄lithium alloy sheets (AL1420) with itself, H62 copper alloy sheets (H62), Q215 gal鄄

vanized steel sheets (Q215) and TA1 industrial pure titanium sheets (TA1) were applied to fabricated different types of

single鄄lap self鄄piercing riveted joints. The static failure loads and energy absorption properties of the joints were ana鄄

lyzed using the static tests, and the macroscopic failure mechanisms were discussed and inferred based on the failure

modes of the joints. The results show that: TA1鄄AL1420 joints have the highest static failure loads, and Q215鄄AL1420

joints possess the optimum energy absorption properties; except for TA1鄄AL1420 joints, the laws of the failure displace鄄

ments are consistent to those of the energy absorption values for the other type joints. When the gap of the yield

strengths between the upper and lower sheets was small, the failure modes of the joints were the lower sheets separated

with the rivet; when it was large, the joints mainly failed due to the sheets with lower yield strength fractured.

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张先炼何晓聪程强卢毅.铝锂合金同异质自冲铆接头静力学性能研究[J].宇航材料工艺,2016,46(2).

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在线发布日期: 2016-11-28
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