Topology optimization for crashworthiness of thin-walled structures under axial impact using hybrid cellular automata

Although topology optimization is well established in most engineering fields, it is still in its infancy concerning highly non-linear structural applications like vehicular crashworthiness. One of the approaches recently proposed and based on Hybrid Cellular Automata is modified here such that it can be applied for the first time to thin-walled structures. Classical methods based on voxel techniques, i.e., on solid three-dimensional volume elements, cannot derive structures made from thin metal sheets where the main energy absorption mode is related to plastic buckling, folding and failure. Because the main components of car structures are made from such thin-walled beams and panels, a special approach using SFE CONCEPT was developed, which is presented in this paper.

[1]  Anders Klarbring,et al.  Conceptual optimal design of modular car product families using simultaneous size, shape and topology optimization , 2007 .

[2]  M. Bendsøe,et al.  Topology Optimization: "Theory, Methods, And Applications" , 2011 .

[3]  W. Abramowicz,et al.  Thin-walled structures as impact energy absorbers , 2003 .

[4]  Markus Zimmermann,et al.  On the calibration of simplified vehicle crash models , 2014 .

[5]  Fabian Duddeck,et al.  Geometrical compatibility in structural shape optimisation for crashworthiness , 2014 .

[6]  John E. Renaud,et al.  Crashworthiness Design Using Topology Optimization , 2009 .

[7]  Garret N. Vanderplaats,et al.  DISCRETE OPTIMIZATION CAPABILITIES IN GENESIS STRUCTURAL ANALYSIS AND OPTIMIZATION SOFTWARE , 2002 .

[8]  Christophe Bastien,et al.  Effects of roof crush loading scenario upon body in white using topology optimisation , 2012 .

[9]  Fabian Duddeck,et al.  Modular Car Body Design and Optimization by an Implicit Parameterization Technique via SFE CONCEPT , 2013 .

[10]  Axel Schumacher,et al.  Graph and heuristic based topology optimization of crash loaded structures , 2013 .

[11]  Fabian Duddeck,et al.  Shape optimisation for crashworthiness followed by a robustness analysis with respect to shape variables , 2013 .

[12]  Fabian Duddeck,et al.  Multidisciplinary optimization of car bodies , 2008 .

[13]  Andrea Baldini,et al.  High performance automotive chassis design: a topology optimization based approach , 2011 .

[14]  J Latchford,et al.  Rollover far side roof strength test and simulation , 2007 .

[15]  John E. Renaud,et al.  Convergence analysis of hybrid cellular automata for topology optimization , 2010 .

[16]  Gyung-Jin Park,et al.  Technical overview of the equivalent static loads method for non-linear static response structural optimization , 2011 .

[17]  Heung-Soo Kim,et al.  New extruded multi-cell aluminum profile for maximum crash energy absorption and weight efficiency , 2002 .

[18]  A. Alavi Nia,et al.  An investigation on the energy absorption characteristics of multi-cell square tubes , 2013 .

[19]  Claus B. W. Pedersen,et al.  Topology optimization design of crushed 2D-frames for desired energy absorption history , 2003 .

[20]  Chandan Kumar Mozumder,et al.  Topometry optimization of sheet metal structures for crashworthiness design using hybrid cellular automata , 2010 .

[21]  Stephan Hunkeler,et al.  Topology Optimisation in Crashworthiness Design via Hybrid Cellular Automata for Thin Walled Structures. , 2014 .

[22]  L. Nilsson,et al.  Topology optimization in crashworthiness design , 2006 .