Mechanical and thermal fatigue of curved composite beams

  • Authors:

  • L. Figiel;M. Kamiński

  • Affiliations:

  • Department of Structure and Mechanics, Institute of Polymer Research, Dresden, Germany;Division of Mechanics of Materials, Technical University of Lódz, Poland

  • Venue:
  • ICAAISE '01 Proceedings of the eighth international conference on The application of artificial intelligence to civil and structural engineering computing
  • Year:
  • 2001

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Abstract

The main goal of this paper is presentation of computer modeling of the layered composite fatigue delamination under thermal cycling and cyclic compressive shear with the constant amplitude. The considered composite material consists of two components with transversely isotropic linear elastic properties. The fatigue delamination problem is solved using the Linear Elastic Fracture Mechanics (LEFM) approach for interfacial cracks and referred to interface fatigue crack propagation. Then, the problem is analyzed numerically thanks to Finite Element Method (FEM) displacement-based program ANSYS. The number of cycles to composite failure under mechanical load is approximated by the modified Paris-Erdogan law implemented in this program together with the number of thermal cycles required to hold up the fatigue crack growth.