Finite element modeling of masonry shear walls | |
| Author | Supakorn Phawanna |
| Call Number | AIT Thesis no. ST-97-11 |
| Subject(s) | Finite element method Walls |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-97-11 |
| Abstract | Finite element model has been developed for masonry shear walls subjected to in-plane loads. The model considers geometric nonlinearity and damage due to progressive failure. The nonlinear behavior of masonry shear walls subjected to in-plane loads is dominated by the fracture of mortar joints as well as the cracking and crushing of masonry units. Hence, a finite element approach in which mortar joints are modeled with interface elements and masonry units are modeled with smeared crack elements is utilized to analyze these structures. The interface elements are formulated by means of three different approaches, namely, penalty function method, Lagrange multiplier method, and mortar interface element. The smeared crack elements adopting nonlinear orthotropic constitutive models for cracked and crushed masonry units have been formulated. The performance of the analytical model is validated with available experimental data. It is shown that the interface models based on penalty function and Lagrange multiplier methods are inadequate to capture the behavior of masonry shear walls, without incorporating the actual elastic mortar properties as well as the tension softening into interface model. Hence, a new numerical model which takes into account the elastic mortar properties and tension softening is proposed. This model is capable not only of predicting the response, but also the load carrying capacity, failure mode, ductility, and the damage patterns of masonry shear walls. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-97-11 |
| 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) | Worsak Kanok-Nukulchai |
| Examination Committee(s) | Wijeyewickrema, Anil C.;Taweep Chaisomphob |
| Scholarship Donor(s) | Asian Institute of Technology Partial Scholarship |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1997 |