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Published in:
2018 | OriginalPaper | Chapter
A Study of Topology Optimization for Joint Locations of Automotive Full Vehicle
Authors : Takanobu Saito, Yoshikiyo Tamai, Jiro Hiramoto
Published in: Advances in Structural and Multidisciplinary Optimization
Publisher: Springer International Publishing
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Abstract
The optimization method for searching the joint locations of spot-welding and adhesives in a automotive body made of steel sheets was studied [1]. The key point is that the topology optimization method was applied to the optimization of joint elements by using a full vehicle model in order to improve vehicle performance. In addition to static stiffness using constraints, stiffness while driving is required in the body stiffness of the full vehicle. Inertia relief is known as a method for expression of behavior while driving.
In this study, stiffness optimizations were carried out for an automotive full vehicle model by using static stiffness and inertia relief for stiffness while driving. The optimal target is addition of spot-welding and addition of adhesives. The results show that the developed topology optimization method for joint locations is valuable in optimization of automotive bodies made of steel sheets. Optimization of the location of spot-welding shows the efficiency of the topology method compared with the conventional method, and optimization of the location of adhesives shows the minimum quantity of adhesive for stiffness by the topology method. The results of optimization of joint locations differed between the static stiffness using constraints and the stiffness using inertia relief.