Bilinear Analysis
Bilinear Analysis The need for nonlinear analysis has increased in recent years due to the need for the use of optimized structures, new materials and for addressing safety-related issues of structures more rigorously. The process of changing stiffness is common to all types of nonlinear analyses. Because it isn’t possible to point out a single cause of nonlinear behavior in many problems, some analyses may have to account for more than one type of nonlinearity. In this blog, we will focus on material non-linearity which is one of the types of nonlinearities. Generally, any material has two phases i.e., linear and nonlinear based on the loads applied, types of analysis, need & requirements. A linear material model assumes stress to be proportional to strain. It assumes that no permanent deformations will result and that once the load has been removed the model will always return to its original shape. In another case, when the structure made of ductile materials, is overloade...