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THERMAL STRESSES IN LAMINATED BEAMS

 

作者: Du Chen,   Shun Cheng,   T. D. Gerhardt,  

 

期刊: Journal of Thermal Stresses  (Taylor Available online 1982)
卷期: Volume 5, issue 1  

页码: 67-84

 

ISSN:0149-5739

 

年代: 1982

 

DOI:10.1080/01495738208942136

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

This paper considers laminated beams consisting of layers of different materials fastened together by thin adhesives. The stresses that result from subjecting the beam to temperature stimuli are calculated. The problem is treated by two-dimensional elasticity theory in conjunction with the variational theorem of complementary energy. A pair of governing differential equations is developed, and boundary conditions concerning stress-free surfaces and ends of the beam are satisfied. The calculation of the distributions of interlaminar normal and shear stresses shows that high stress intensity occurs in the end zones of the beam. Thus, the satisfaction of end conditions is of prime importance in the analysis of laminated structural elements. Delamination failure-when it occurs - will probably start at the ends of the beam, This agrees with observed failures of laminated structural elements subjected to stress-free end conditions.

 

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