Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
511700 | Computers & Structures | 2009 | 9 Pages |
Abstract
An improved adaptive technique for the finite element formulation of limit analysis problems of symmetrically loaded thin shells of revolution is presented. Bending, membrane behavior and changes of curvature are simulated by using an axisymmetrical thin shell element of three nodes associated with a new piecewise linear (PWL) yield surface. The results obtained show better upper bounds when compared to other numerical and analytical solutions reported in the literature. Finally, an a posteriori error measure is re-written to include the new displacement rate and PWL strain rate fields, resulting in an adaptive scheme for refining the finite element mesh.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
José Ricardo Queiroz Franco, Felício Bruzzi Barros, Alan R.S. Ponter,