1. University of Stuttgart; Institute for Lightweight Structures and Conceptual Design; Pfaffenwaldring 14 70569 Stuttgart Germany
2. University of Stuttgart; Institute for Structural Mechanics; Pfaffenwaldring 7 70569 Stuttgart Germany
3. University of Stuttgart; Institute for Engineering Design and Industrial Design; Pfaffenwaldring 9 70569 Stuttgart Germany
4. University of Stuttgart; Institute for System Dynamics; Waldburgstraße 17/19 70563 Stuttgart Germany