In the calculation or simulation of technical components for use in a technical system wherein calculation programs are provided for various physical variables which are taken into account on a case-to-case basis, a preprocessing method is provided in order to couple programs for physically and geometrically calculating such a component without the need for the creation of a tailor-made calculation program for a specific component. The procedural setup of the processing steps permits a modular composition of the calculation process for the simulation of any type of component subjected to physical influences.