Developing FEM models for difficult to describe 3D structures by using STL files – the case study of the human femur modelling

The paper presents a computational approach to the process of creation of complex three-dimensional composite structures making use of STL files. The process of numerical treatment of measuring pointsʹ coordinates is shown. The construction of the model of human thigh bone head is demonstrated. Finally, the geometrical model of the object, which can be used by PATRAN system, is obtained.