Large deformation analysis of enhanced assumed strain solid-shell element based on displacement formulation | |
| Author | Wang, Zaixiong |
| Call Number | AIT Thesis no.ST-02-9 |
| Subject(s) | Strains and stresses Deformations (Mechanics) |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Recently solid element has become widely used because of its excellent properties due to its less DOFs compared with degenerated shell element. However, it also encounters two main problems in application: (1) The solution convergence tends to be extremely slow in linear analysis and it fails to show the behavior of nonlinear analysis. (2) There are several severe locking problems in the thin plate and shell structures. In this study, Enhanced Assumed Strain (EAS) method will be applied to conventional 8-node compatible solid element. The new 3D 8-node element with 30 enhanced strain terms and full integration, so-called as 8-node solid element (XSOLID8E), will be locking free and converge to accurate solution will be very fast in both linear and geometrically nonlinear fields. Benchmark test and some numerical examples show that the present element can be used successfully in the whole range of solid structure. A total Lagrangian incremental formulation based on virtual displacement principle is adopted. All problems are solved with an eXtended version ofFINAS package (XFINAS). |
| Year | 2002 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Kim, Kidu ; |
| Examination Committee(s) | Worsak Kanok-Nukulchai;Barry, William J. ; |
| Scholarship Donor(s) | German Academic Exchange Service; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2002 |