28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-7.1.1

ANALYSIS OF MULTIPLE SITE DAMAGE IN AIRCRAFT STRUCTURES BY USING WEIGHT FUNCTION METHOD IN FRACTURE MECHANICS

X. R. Wu, W. Xu*
AVIC Beijing Inst. of Aeronautical Materials, China; *Shanghai Jiao Tong Univ., China

Keywords: multiple site damage, weight function method, stress intensity factor, plastic zone size, crack opening displacement

A novel analytical method, the fracture mechanics weight function method, for residual strength analysis and fatigue crack propagation life estimation for aircraft structures containing multiple-site-damage is presented. Highly accurate solutions of stress intensity factors, crack opening displacements and plastic zone sizes can be obtained by a simple quardrature.

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