Numerical Analysis Using Sofistik Software - 2346 Words

CHAPTER FIVE: Numerical analysis using SOFISTIK software 5.1. Introduction: In chapter 2, literatures of concrete modelling have been reviewed. The scope of this chapter is to describe the finite element software SOFISTIK to simulate the nonlinear behavior of the foam balls lightweight concrete. The results from this numerical technique are presented and validated with the experimental results obtained from the laboratory tests. The results obtained from these experimental and numerical investigations are taken to predict the nonlinear behavior of 150x150x150 mm FBLWC cube. The damage plasticity concrete concept is used to model the foam balls lightweight concrete cube in the SOFISTIK. Meanwhile, a spring elements are considered to reproduce the nonlinear FBLWC behavior. They are taken into account to develop the F.E.M. structural analysis to obtain stress-strain responses. 5.1.1. Finite element method: The finite element method is a numerical technique that has been successfully adopted to study special cases where, for instance, stress-strain distribution is required. In the past, due to the complexity of the problems, it was difficult to describe them in the same manner because they took much time and effort. However, the development and the use of sophisticated software have now improved this situation. (Zienhiewicz, 1977) The F.E.M. concept is then applied to simulate the performance of the experimental FBLWC tested at laboratory. The numerical evaluations areShow MoreRelatedFinite Element Results Of The Beams Model1553 Words   |  7 PagesPrincipal strain II for B4 Figure (5.148): Principal strain II for B5 Figure (5.149): Principal strain II for B6 Figures (5.150) to (5.155) show the shear stress for B1, B2, B3, B4, B5 and B6. A comparison of the concrete crack patterns from the numerical results and experimental results is shown in same figures. Diagonal cracks occurred at supports. When the applied loads increase, diagonal flexural cracks spread from the support to upper loading plate. Figure (5.150): Shear stress results for