Drawings, originally executed with a pencil, ruler and compass, have been redesigned with modern programmes like Catia and, where needed, using CorelDraw “insertions”. If, for various subjects the “historical” SAP IV had been used in the era of punched cards, later they were processed with ANSYS (with the “right-hand rule” for its OXYZ axes system), adding a special application for depicting strain diagrams directly upon the “active” surfaces of elastic elements (EEs). At the beginning of the new millennium, we switched to computer aided design (CAD), combined with finite element analysis (FEA), which facilitates modeling and parametric optimization of the EEs for SGFTs. weiterlesen