Topology optimization of frame structures: a vehicle body application
(English)Manuscript (preprint) (Other academic)
An application of frame topology optimization on a vehicle body structure is presented. A traditional way of describing the elements of a vehicle body structure is by beams and joints. Based on this, the models used in this study are frame structures with flexible joints. The problem considered is to find that stiffest frame design which fulfills a weight requirement. To support for a topological change of joints, each joint is modelled as a set of subelements. A set of design variables are applied to each beam and joint subelement. Two kinds of design variables are used. One of these variables is an area-type design variable used for controlling the global element size and supporting a topology change. The other variables are length ratio variables controlling thecross-section of bemas and internal stiffness properties of joints. The vehicle body application presented in this paper shows the usefulness of topology optimization in the early design phase.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-87820OAI: oai:DiVA.org:liu-87820DiVA: diva2:600134