Finite Element Modeling and Simulation of Tensile Experiment and Teaching Practice in Vocational Colleges

the problem of poor teaching effect of tensile experiment in material mechanics course in vocational colleges has existed for a long time. In order to solve it, the research team put forward a method of using finite element modeling and simulation calculation to obtain materials such as pictures, animation and etc., so as to improve teaching quality. Hence a three-dimensional finite element model for tensile experiment was established and conducted calculations on a computer. The calculated Mises stress nephogram and demonstration animation were used as course materials in the classroom of material mechanics. The teaching practice shows that the application of materials obtained by finite element model and simulation improves teaching quality, enhances students’ learning interest and expands students’ vision. Firstly, model simulation obtains clear demonstration animations, which can repeatedly show the process of sample necking and fracture under external load. Secondly, stress/strain data at different moments are obtained by model simulation and displayed in different color forms (the more red, the greater the stress/strain data). These materials obviously enhance students’ interest in learning. Thirdly, the model simulation and demonstration are done on a computer, which not only has no danger, but also saves the experimental cost. The research idea of this paper should be applied in more courses of vocational education.