Sage Journals: Discover world-class research

Abstract

Thermally induced stresses in fiber composite laminates play an important role in the strength and failure of such laminates as load carrying members. When laminates have free edges, cutouts or holes, interlaminar stress concentration will usually develop near the free-edge region under service loads. An accurate evaluation of thermally induced edge stresses will further the understanding of the laminates' behavior. The present paper examines the stress field of a finite-width, symmetrical laminate when subjected to a uniform temperature change. A finite-element proce dure employing advanced sparse matrix solution technique is employed to study the singular nature of stresses near the free-edge region. Edge effects on the overall response of the laminate under thermal loading are discussed.

Get full access to this article

View all access options for this article.

References

A.S.D. Wang and F.W. Crossman , "Some New Results on Edge Effects In Symmetric Composite Laminates," J. Composite Materials, Vol. 2 (1977), p. 92.

R.B. Pipes and N.J. Pagano , "Interlaminar Stresses in Composite Laminates Under Uniform Axial Extension ," J. Composite Materials, Vol. 4, (1970), p. 538.

H.T. Hahn and N.J. Pagano , "Curing Stresses in Composite Laminates," J. Composite Materials, Vol. 9 (1975), p. 91.

O.C. Zienkiewicz , The Finite Element Method in Engineering Science, McGraw-Hill , London (1971).

S.W. Tsai , "Mechanics of Composite Materials," II, AFML-TR-66-149 ( 1966).

G.D. Renieri and C.T. Herakovitch , "Nonlinear Analysis of Laminated Fibrous Composites ," VPI-E-76-10, Virginia Polytechnic Institute and State University (1976).

Edge Effects on Thermally Induced Stresses in Composite Laminates

Abstract

Get full access to this article

References