FIRST RESULTS OF THE PASTISS PROJECT:PROFESSIONAL ANALYSIS SOFTWARE TOOL FOR INFLATABLE SPACESTRUCTURES

摘要

At the beginning of 2004, the European Finite Elementcompany SAMTECH started a two-year ESA contractnamed PASTISS (for Professional Analysis SoftwareTool for Inflatable Space Structures) in order to workon the development of appropriate numerical methodsfor the analysis of Inflatable Space Structures. Thedevelopments are carried out in the commercialEuropean Finite Element software SAMCEF, and inparticular in SAMCEF Mecano which is a totallyimplicit code. The project is made of three main partsrelated respectively to the improvement of linearanalyses around a pre-stressed state coming from thenon-linear analysis, of non-linear analyses and of thegraphical user environment. In this paper, we mainlyfocus on the development of the new non linear solverbased on an optimization approach, particularly wellsuited for the simulation of the inflation process of thinmembranes.