Non-linear analysis in SOLIDWORKS Simulation Premium opens the door for designers and engineers to explore the non-linearities in the form of geometry, material and contact. The iterative method in non-linear analysis allows users to update geometry stiffness during the solution, allowing for accurate analysis of structures that are subjected to large deformation and contact development. Material effects such as non-linear elasticity, plasticity and hyper-elasticity can be considered to accurately represent part behaviour. Non-linear studies can be created using static or dynamic assumptions and can even take advantage of two-dimensional simplification in order to improve solution speed. Materials can be applied using a variety of advanced material models from the pre-installed or user-defined library. This includes plasticity models for permanent deformation and hyper-elastic models to model rubber. Both component bonds and sliding contact can be considered by selecting components using contact sets, and a multitude of fixtures can then be applied to restrain the model in 3D space. Finally, loading is applied to the model and can be controlled linearly or using a load curve, allowing for the loads to be sequenced during the solution and even turned off if required. Model mesh is applied using an intuitive dialogue with the ability to add individual refinement regions if required. Solution of the analysis is performed iteratively with automatic time stepping to guarantee solution accuracy and stability whilst reducing computation time. Results are saved at defined solution points and then are available for post-processing. Results of the analysis are plotted at individual time steps or as maximum and minimum values across the time range. Results can also be animated to display the model behaviour as loads are applied. Probed responses can be extracted for individual model locations to track displacements and stresses over the entire solution. In addition to non-linear static behaviour, inertial and damping effects can also be simulating using the non-linear dynamic study type. This allows users to apply time-based loading such as velocity and acceleration. Complex impact and dynamic effects can be considered using this solution, and once again the results can be animated to understand model behaviour and identify areas of improvement. Non-linear analysis allows users to analyse complex material behaviour such as post yield metals, rubbers and plastics, as well as accounting for large deflections, sliding contact and inertial and damping effects. Non-linear analysis reduces expensive prototyping by virtually testing complex assemblies inside SOLIDWORKS.