This Bachelor’s thesis is commissioned by HAMK Tech, a research unit in Häme University of Applied Sciences. The research topic of this thesis is a part of a bigger research project on high strength steel applications and welded connections. The main goal is to create finite element models of a S500 tensile specimen test. This thesis is the direct continuation work of a previous thesis research topic on finite element modelling of heat affected zone and another on the experimental tests of the effect of different heat inputs on welding of high strength steel. This Bachelor’s thesis aims to create different types of finite element models of the tensile specimen with LS-Dyna. The modelling can be categorized into the following main tasks: geometry creation, keywords definition, meshing technique, output data and especially the definition of material properties. The approach used in this thesis starts with the geometry building and the input process in LS-PrePost and continues with output data analysis and result examination in LS-Post Processing. References from previous Bachelor’s theses are great assets to this thesis work, and so this thesis provides the continuation of the research and to provide a solid foundation for further inquiries. This thesis achieved several substantial progresses in geometry creation, meshing technique, reduction of simulation time and, to a certain extent, the material properties of heat affected zone. The created models provide a realistic failure mechanism, similar to the actual tensile test. An advanced meshing technique used in the model allows the modeler to manipulate meshing shapes and sizes to reduce the simulation time. Two finite element models were constructed, one shell and one solid model, with an aim to simplify the material properties estimation work.