The Prospects for Finite Element Analysis Methods for Structural Qualification
Abstract
'Structural Qualification by Finite Element Analysis': The report discusses the effect of the emergence of the finite element package as a design and validation facility which has become more accessible as computer hardware has improved and software become friendlier. In the aircraft industry the traditional relationship between analysis and test has been for the former to establish load paths and local stress levels, which are then fed into separate analysis or data sheets, or component tests, to predict strength, life or other failure modes. The full scale test validates the whole process. Now that finite element (linear) analysis is used to predict local stress levels, there will be a temptation to use it to predict failure modes - which are invariably nonlinear. The next step could be to omit the experimental test completely, even for first production types. The commercial pressures already exist. 'Application of Nonlinear FE/FD - Methods for Support of Structural Tests': The aim of the paper is to show the beneficial interaction of numerical analysis and experimental investigation in the field of nonlinear structural response. This is illustrated by applications of the DYSMAS-code, developed at IABG for the computation of highly nonlinear wave propagation and material flow in the short time range, consisting of a 3D-Lagrangian code, a 3D-Eulerian code and a coupling module. Difficulties in comparison of numerical and experimental results are sketched in a symbolic manner.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1986
- Accession Number
- ADA171304
Entities
Organizations
- AGARD