本文選題：機(jī)械制造　切入點(diǎn)：自沖鉚　出處：《吉林大學(xué)學(xué)報(bào)(工學(xué)版)》2015年02期

【摘要】：通過(guò)試驗(yàn)方法研究了5052鋁合金和H62銅合金異質(zhì)材料搭接自沖鉚接頭的力學(xué)性能。獲得了表征接頭性能的力-位移曲線和載荷-壽命曲線,采用數(shù)理統(tǒng)計(jì)方法檢驗(yàn)了數(shù)據(jù)的有效性。對(duì)接頭強(qiáng)度、剛度、抗沖擊性能、失效形式、失效機(jī)理進(jìn)行了分析。結(jié)果表明:剛度隨接頭載荷而變化,疲勞強(qiáng)度隨剛度的增大而增強(qiáng),SCC接頭靜強(qiáng)度最高,SAA2次之,SAC高于SAA1接頭,板材厚度、材質(zhì)及鉚釘長(zhǎng)度影響接頭靜載強(qiáng)度,上板材質(zhì)對(duì)接頭強(qiáng)度影響更大,下板材質(zhì)對(duì)接頭抗沖擊性能影響大于上板,板材厚度影響失效位移,靜載失效形式皆為鉚釘與下板分離;SCC接頭疲勞性能最優(yōu),SAA2次之,SAC最小,微動(dòng)滑移、板材厚度、材質(zhì)影響接頭疲勞強(qiáng)度,同種材料接頭以下板斷裂為主,異質(zhì)材料接頭較軟板材斷裂失效。
[Abstract]:The mechanical properties of 5052 aluminum alloy and H62 copper alloy heterogeneity material were studied by means of test. The mechanical properties and load-life curves were obtained to characterize the properties of the joints. The validity of the data is verified by means of mathematical statistics. The strength, stiffness, impact resistance, failure form and failure mechanism of the joint are analyzed. The results show that the stiffness varies with the joint load. The fatigue strength increases with the increase of stiffness. The highest static strength of SAA1 joint is higher than that of SAA2. The thickness of plate, material and length of rivet affect the static strength of joint, and the material of upper plate has more influence on the strength of joint. The impact of bottom plate material on joint impact resistance is greater than that of upper plate, and the thickness of plate affects failure displacement. The failure forms of static load are rivet and bottom plate separation SCC joint fatigue performance is the best SAA2, SAC is the least, fretting slip, plate thickness. The fatigue strength of the joint is affected by the material. The fracture of the plate below the same material joint is dominant, and the fracture failure of the heterogeneous material joint is more than that of the soft plate.
【作者單位】： 昆明理工大學(xué)機(jī)電工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(50965009)
【分類號(hào)】：TG407

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王媛;廖日東;姚利民;;構(gòu)件微動(dòng)作用過(guò)程的有限元分析[J];強(qiáng)度與環(huán)境;2005年04期

2 任平弟,朱e，

本文編號(hào)：1674336