Relevancy Measures of Errors in Displacements of Finite Elements Analysis Results
- Civil Engineering Department, Benghazi University, Benghazi, Libya
Published in The First NZAAR International Event Series on Natural and Built Environment, Cities, Sustainability and Advanced Engineering, Putrajaya, Malaysia, 26 June 2016, pages 63 to 71. New Zealand Academy of Applied Research. ISSN 2463-5979 (online), 2463-5960 (print).
Abstract
This paper highlights the methods of error estimation in finite element analysis (FEA) results. It indicates that the modeling error could be eliminated either by performing finite element analysis with successively finer meshes or by extrapolating response predictions from an orderly sequence of relatively low degree of freedom analysis results. In addition, the paper eliminates the round-off error by running the code at a higher precision. The paper provides application of the procedure of error estimation in finite element analysis results. It draws a conclusion based on results of application of methods of error estimation. And recommends an analysis process that leads to accurate estimates of displacement error in finite element analysis result to measure the accuracy and a possible improvement on it by monotonic convergence of the displacements results.
Keywords: Finite element analysis (FEA); Discretization error; Round-off error; Mesh refinement; Richardson Extrapolation; Monotonic convergence
Rights
Copyright © New Zealand Academy of Applied Research Ltd 2016. All rights reserved. Reproduced in the GDI Academy archive from the original proceedings without change to the authors’ text.