Seminar: Manufacturability-driven, Multi-component Topology Optimization for Top-down Design of Structural Assemblies

Kazuhiro Saitou, PhD, University of Michigan

All dates for this event occur in the past.

Scott Laboratory
Scott Laboratory
E525
201 W 19th Ave
Columbus, OH 43210
United States

Abstract

This talk presents a manufacturability-driven, multi-component topology optimization (MTO) framework for simultaneous design and partitioning of structures assembled of multiple components. Constraints on component geometry imposed by chosen manufacturing processes are incorporated in the conventional density-based topology optimization, with additional design variables specifying fractional component membership which enables continuous relaxation of otherwise discrete partitioning problems. The geometric constraints imposed by various manufacturing processes, such as size, perimeter length, undercut and enclosed cavities, are also relaxed to enable the manufacturability evaluation of “gray” geometries that occur during the density-based topology optimization. Examples on minimum compliance structural assembly design for sheet metal stamping (MTO-S), die casting (MTO-D), additive manufacturing (MTO-A) and tailored-fiber composite process (MTO-C) show advantages over the conventional monolithic topology optimization. In particular, manufacturing constraints previously applied to monolithic topology optimization gain new interpretations when applied to multi-component assemblies, which can unlock richer design space for topology exploration. The talk will conclude with a brief overview of the latest developments on the MTO framework for continuous fiber printing and for “4D” printing processes.

 

About the speaker

Kazuhiro Saitou is professor of mechanical engineering at the University of Michigan, Ann Arbor. He received his BEng degree from the University of Tokyo, and master's and doctoral degrees from Massachusetts Institute of Technology, all in mechanical engineering. His research interest includes algorithmic and computational design synthesis and design for manufacture and assembly, with applications in mechanical, industrial and biomedical systems. Saitou was the recipient of several awards including ASME DfM Kos-Ishii Toshiba Award, Innovative Design Component Award from ARPA-E Lightweighting Technologies Enabling Comprehensive Automotive Redesign (LITECAR) Challenge, Design and Systems Division Achievement Award from Japan Society of Mechanical Engineers, and CAREER Award from NSF. He has served as an associate editor for the ASME Journal of Computing and Information Science in Engineering (JCISE), ASME Journal of Mechanical Design (JMD), and IEEE Transactions on Automation Science and Engineering (T-ASE), and is currently serving as an associate editor for JCISE and a Senior Editor for T-ASE. He was a past chair of the ASME Design Automation Technical Committee (DAC) and the ASME Design for Manufacturing and the Life Cycle Technical Committee (DFMLC), and the editor-in-chief for Conference Editorial.

 

Hosted by Professor Jami Shah.