Using the finite element method in the modeling of layered composite delamination

The article presents issues associated with an analysis of the process of delamination of fibrous composite using the Finite Element Method. Research encompassed three computer modelling sessions for delamination of the material for three different values of distance between the test force application point and the middle of the laminate. The results, encompassing the force value and displacement, were then compared to identify the correlation between these variables and the distance from the force application point. The model correctness was also verified by comparing the value of forces modelled with the real values, obtained during an experiment. On the basis of the results obtained with regard to the size of the force applied, it was concluded that the numerical model represented well the mathematical model presented by Comanho. The negative result errors were due to the increased sensitivity of the software to the laminate fracture phenomenon, occurring during the experiment. Thanks to good representation of the model, it can be used interchangeably with numerical calculations

3d design procedure, fem analyses and optimization of the tiller’s sprocket

This article present selected issued of the analysis of the computer modelling of the tiller’s sprocket with the Solid Edge ST software. The geometry presented in the article was prepared so that they may be used to perform simulation presenting the influence of the loads generated by the ground work on the distribution and values of the stress forces within the tiller’s sprocket - Finished Element Method. The analysis covered the sprockets subjected to the forces of: 200N, 400N, 600N, 800N and 1000N. Geometric models were developed based on the available catalogue materials and the Polish Standard PN+92/R-58051-1. The FEM analyses performed allowed suggesting solutions to optimise the whole geometry in terms of the strengths