Strain based finite element formulation for moment curvature analysis | |
| Author | Karunarathna, H. B. Ireshika |
| Call Number | AIT Thesis no.ST-11-02 |
| Subject(s) | Finite elements Curvature |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering inStructural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-11-02 |
| Abstract | This study presents strain based finite element formulation for moment –curvature analysis of any arbitrary cross section with applied axial load and flexure. Two dimensional analysis is carried out considering strain profile as unknowns. Cross section is dicretized into four noded quadrilateral elements to represent concrete or structural steel, and nodal point areas to represent longitudinal reinforcement. Algorithm is developed to generate moment curvature response of a given cross section by employing finite element discretization and formulation. Specifically selected constitutive relationships are considered for concrete, structural steel and reinforcement under monotonic and cyclic loading. Confinement effect, tension stiffening and strain hardening are also accounted for material model. Developed algorithm (RECOMOC) can develop moment curvature response for complex cross sections by carrying out iteration with given tolerance throughout the process. Results obtained from RECOMOC are verified and validated with theoretical calculation and experimental and software results. Comparison with fiber element method is conducted to check discretization level and accuracy of results.According to results, RECOMOC program is accurate in verification and validation process and it converges to exact solution with minimum discretization level compared with fiber element method. |
| Year | 2011 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-11-02 |
| 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) | Pennung Warnitchai;Punchet Thammarak |
| Examination Committee(s) | Park, Kyung Ho;Wang, Ching Long |
| Scholarship Donor(s) | AIT Fellowship |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2011 |