ANSYS offers a comprehensive range of engineering simulation solution sets providing access to virtually any field of engineering simulation that a design process requires. Organizations around the world trust ANSYS to deliver the best value for their engineering simulation software investment. Nonlinear Mechanics for Structural Engineering Simulation Modeling products realistically and accurately often requires use of nonlinear capabilities. In fact, many structural engineers use nonlinear features in their simulation on a daily basis but may not be aware of it. Every engineer dealing with assemblies uses contact. Every engineer dealing with plastics or rubber parts needs nonlinear material models. Every product submitted to large deformations requires a nonlinear simulation to predict stress stiffening effects and potential collapse. In severe cases, an explicit dynamics simulation may be warranted. View larger image Making the assumption a rubber is a linear material might be true for very limited deformations, but it proves to be totally inaccurate when parts are subject to large deformations. To reach accuracy requires minimizing the number of assumptions on the model: Material models need to closely follow real behavior; contacts and interactions between parts require detailed modeling. View larger image Nonlinear buckling of a stiffened vessel Fortunately, dealing with nonlinear responses has become easier, thanks to ongoing improvements in engineering simulation software. Today, nonlinear analysis is so accessible that any engineer capable of running a linear analysis already has the skills required to perform a good nonlinear simulation. Too often, nonlinear modeling is perceived as requiring painful processes, specific meshing techniques, long computation times and model debugging to achieve convergence. ANSYS offers all the tools necessary to accurately compute models with nonlinear behavior — while providing unparalleled ease of use. ANSYS Structural Mechanics solutions provide high-end solver capabilities, an intuitive user interface, and all the necessary tools to understand the simulation process and results. The software incorporate all materials, elements and algorithms required for nonlinear simulations.