MODELING OF CORROSION PILLOWING IN LAP JOINTS MADE OF LY12CZ

被引：0

作者：

Yu Dazhao ^{[1
]}

Chen Yueliang ^{[1
]}

Gao Yong ^{[1
]}

Jia Zhonghu ^{[1
]}

Liu Wenlin ^{[1
]}

机构：

[1] Naval Aeronaut Engn Inst, Yantai, Peoples R China

来源：

PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON INSPECTION APPRAISAL REPAIRS AND MAINTENANCE OF STRUCTURES, VOLS 1 AND 2 | 2010年

关键词：

lap joint; corrosion pillowing; finite element analysis; structural integrity; stress field;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Finite element techniques were used to determine the effect of pillowing stress on lap joints. The stress caused by the internal pressure, the contacts between the fastener and skin, and geometrical nonlinearity were taken into account. The results show that corrosion pillowing can significantly increase the stress in a lap joint for material loss below the detection limit of current nondestructive inspection techniques, thus increasing the risk of premature cracking. In addition, the analyses show that the locations of maximum stress of lap joint will change with the material loss increases. Simulating the effect of corrosion on lap joint only by reducing the panel thickness will result in nonconservative life estimates if corrosion pillowing is ignored.

引用

页码：1307 / 1310

页数：4

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