Title: Advanced numerical methods for analysis and design of aircraft structures

Authors: B. Fredriksson

Addresses: Saab-Scania AB, Aircraft Division, S-581 88 Linkoping, Sweden

Abstract: This paper reviews various numerial and computational tools for the design of aircraft structures, in particular the finite element method (FEM) and the boundary element method (BEM). The importance of integrating different disciplines like aerodynamics, stress, loads and computer-aided design (CAD) to form a computer-aided design environment is stressed. Both the conventional use of FEM in internal load calculations and the advanced use in optimization and detailed stress analysis of complex structural situations are surveyed. Problems like crack and contact and also combined crack and contact, analysis are discussed. The paper also discusses pre- and post-processing and the use of computer graphics in the stress analysis of structures. The use of computer software in design against fatigue and fracture and the integration of the process from external loads, internal loads, local spectrum and material data to fracture and fatigue analysis, is given as an example of integration.

Keywords: finite elements; boundary elements; structural optimisation; composites; contact analysis; crack analysis; crack propagation; bird impact; load integration; aerodynamics; computer-aided design; CAD; aircraft design; aircraft structures; structural design.

DOI: 10.1504/IJVD.1986.061154

International Journal of Vehicle Design, 1986 Vol.7 No.3/4, pp.306 - 336

Published online: 25 May 2014 *

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