- Evaluation of Infill Strut Properties Based on In-plane Cyclic Tests
- S. Hak ; P. Morandi ; M. Magenes
- Book Title / Journal: Građevinar
- Year: 2013 , Volume: 65 , Series:
- Earthquake engineering
- Keywords: masonry infill ; equivalent diagonal strut ; cyclic in-plane testing ; limit states
- In the nonlinear analysis of masonry infilled RC frame structures, simple strut models are often adopted to represent the masonry infill, particularly in the case of extensive parametric numerical studies. Therefore, a careful definition of the corresponding strut properties is of exceptional significance for achieving a realistic building response. A method for evaluation of masonry infill strut properties is proposed and applied in this paper, based on the interpretation of results obtained by cyclic in-plane testing of single-storey, single-bay bare and infilled RC frame specimens.
- Modeling of Sliding Shear Resistance of Reinforced Masonry Squat Walls
- J. Centeno ; C.E. Ventura ; S. Brzev
- Book Title / Journal: Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal
- Year: 2012 , Volume: , Series:
- Earthquake engineering
- Keywords: reinforced masonry ; sliding shear mechanism ; Seismic response
- This paper presents the results of an ongoing research study on the sliding shear mechanism in reinforced masonry (RM) shear walls. An overview is presented of the current design procedure and its limitations. Findings of previous studies have been used to develop an analytical model that will allow to simulate the sliding shear response of RM shear walls subjected to earthquake ground shaking in a realistic manner, comparable with the results of experimental studies. The proposed analytical model is described in this paper, and the preliminary results are compared with the results of relevant experimental studies.
- Particle Methods for a 1D Elastic Model Problem: Error Analysis and Development of a Second-Order Accurate Formulation
- D. Asprone ; F. Auricchio ; G. Manfredi ; A. Prota ; A Reali ; G Sangalli
- Book Title / Journal: Computer Modeling in Engineering & Sciences
- Year: 2010 , Volume: 62 , Series:
- Structural Analysis
- Keywords: Meshless methods ; Particle methods ; Error Evaluation ; Kernel Particle Methods
- Particle methods represent some of the most investigated meshless approaches, applied to numerical problems, ranging from solid mechanics to fluiddynamics and thermo-dynamics. The objective of the present paper is to analyze some of the proposed particle formulations in one dimension, investigating in particular how the different approaches address second derivative approximation.
With respect to this issue, a rigorous analysis of the error is conducted and a novel second-order accurate formulation is proposed. Hence, as a benchmark, three numerical experiments are carried out on the investigated formulations, dealing
respectively with the approximation of the second derivative of given functions, as well as with the numerical solution of the static problem and with the approximation of the vibration frequencies for an elastic rod. In each test, the obtained numerical results are compared with exact solutions and the main criticalities of each formulation are addressed.