Elasto-plastic contact stress analysis of joints subjected to cyclic loading

Kumar, K Satish and Dattaguru, B and Ramamurthy, TS and Raju, KN (1996) Elasto-plastic contact stress analysis of joints subjected to cyclic loading. Computers amp; Structures, 60 (6). pp. 1067-1077.

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Official URL: http://www.elsevier.com

Abstract

Rigorous elastic-plastic finite element analysis of joints subjected to cyclic loading is carried out. An incremental-iterative algorithm is developed in a modular form combining elasto-plastic material behaviour and contact stress analysis. For the case of the interference fit, the analysis sequentially carries out insertion of the pin and application of the load on the joint, covering possible initiation of separation (and/or yielding) and progressively the receding/advancing contact at the pin-plate interface. Deformations of both the plate and the pin are considered in the analysis. Numerical examples are presented for the case of an interference fit pin in a large plate under remote cyclic tension, and for an interference fit pin lug joint subjected to cyclic loading. A detailed study is carried out for the latter problem considering the effect of change in contact/ separation at the pin-plate interface on local stresses, strains and redistribution of these stresses with the spread of a plastic zone. The results of the study are a useful input for the estimation of the fatigue life of joints.

Item Type:	Article
Additional Information:	Copyright belongs to Elsevier Science Ltd.,
Uncontrolled Keywords:	Elasto-plastic;Cyclic loading;Finite element analysis;Yielding
Subjects:	AERONAUTICS > Aeronautics (General) CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User:	Mr. N A
Date Deposited:	22 Jun 2006
Last Modified:	03 May 2012 06:15
URI:	http://nal-ir.nal.res.in/id/eprint/1462

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