Author(s)

F.-G. Buchholz & O. Koca

Abstract

Stress and fracture analysis of thermally stressed fiber/matrix composite models F.-G. Buchholz," O. Koca* " Institute of Applied Mechanics, University of Paderborn, D-33098 Paderborn, Germany * Institute of Strength of Materials, University of Tirana, Tirana, Albania ABSTRACT For 2D- and 3D fiber/matrix composite models, subjected to a stationary and homogeneous change in temperature, a detailed stress analysis is performed. Emphasis is put on the additional 3D- effects in the state of stress, which are not covered by the 2D models, but have a strong impact on where and how fracture may occure. Furthermore a thermally induced debonding process between fiber and matrix is considered by the aid of the numerically straight forward and effective. Virtual Crack Closure Integral (VCCI)-method. INTRODUCTION Components manufactured from composite materials are frequently subjected to superimposed mechanical and thermal loadings during service in aircraft-

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