Overview of research and educational activities at KTH Aeronautical & Vehicle Engineering and recent results from studies of optimisation of multi-functional, load carrying body structures

At LMSSC, Cnam, Paris, May 19th 2011, 14 p.m.

Peter Göransson
Professor, Marcus Wallenberg Laboratory for Sound and Vibration Research, Aeronautical and Vehicle Engineering,
School of Mechanical Engineering, KTH, Stockholm, Sweden

An introduction to the research and the educational programmes run by the department of Aeronautical & Vehicle Engineering will be presented. Areas for possible collaboration between the Structural Mechanics and Coupled Systems Laboratory and KTH will be highlighted.
Following this a review of recent work related to the resolution of fundamentally conflicting requirements of low weight and high stiffness in a load carrying structure which should have good acoustic performance is addressed. Focus is placed on the overall system behavior and the functional requirements included: structural stiffness for various loading scenarios, mass efficiency, acoustic absorption, vibrational damping, etc. Here, a multi-layered, multi-functional panel using composite materials, and polymer foams with varying structural and acoustic properties was proposed. Variations in sandwich core topology, materials used, stacking sequence of layers, effects of perforations, and air gaps within the structure are examined and their effects on performance are explored and discussed. The concept shows promise in reducing vehicle weight while maintaining the structural and acoustic performance necessary in the context of sustainable vehicle development.

Laboratoire de Mécanique des Structures et des Systèmes Couplés - LMSSC