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Variational principle of hybrid energy and the fundamentals of 3-D laminate theory - A new approach for the analysis of interlaminar stresses in composite laminates. (English) Zbl 0729.73280

Summary: This paper discusses the discontinuity of stresses and strains at interlaminar surfaces of the composite laminate and presents a three- dimensional laminate theory for composite materials. This paper also presents a new type of elastic energy based on the globally continuous variables in laminates, different from the traditional potential energy and complementary energy. Then a variational principle corresponding to the three-dimensional laminate theory is developed. The theory and the principle could be a basis of verifying the two-dimensional laminate theory and determining the interlaminar stresses near the free edges.

MSC:

74S30 Other numerical methods in solid mechanics (MSC2010)
74P10 Optimization of other properties in solid mechanics
74E30 Composite and mixture properties
74G70 Stress concentrations, singularities in solid mechanics
Full Text: DOI

References:

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