Woodruff School of Mechanical Engineering
Mechanical Engineering Seminar
Multifunctional Materials & Structures: Topology Optimization & Additive Manufacturing
Prof. Michael Wang
National University of Singapore
Monday, September 15, 2014 at 11:00:00 AM
MRDC Building, Room 4211
Topology optimization is an optimization-driven methodology for design exploration, synthesis and multi-disciplinary design. Topology optimization generates structurally optimal design concepts from supplied information on loads, constraints and required product performance and manufacture conditions. By predicting optimal shapes of structures, the design system facilitates analysis to lead the design process to innovative concepts and high-performance product designs. Today, additive manufacturing techniques have evolved to allow material composition to be built by region, by layer, or point-wise. Graded or cellular materials and structures with high complexity can be fabricated without the restrictions of the conventional manufacturing processes. In this presentation, we review recent development in two major aspects of structural topology optimization: the level-set method and applications. In the level set-based approach, the surface of a solid structure is represented as an iso-surface of zero level of an implicit scalar function. Through the use of shape derivative analysis, programming algorithms can be obtained to directly solve the topology optimization problem. The level set representation has topological flexibility and inherent capabilities of geometric, physical and material modeling, incorporating dimension, shape, topology, material properties, and even micro-structures of a functionally gradient structure. The method has found a wide range of applications in the design of multi-functional structures, auxetic materials, and compliant/soft mechanisms/robots. These applications will be discussed.
Michael Yu Wang is a Professor at National University of Singapore since 2014. He earned his PhD from Carnegie Mellon University and previously taught at University of Maryland and Chinese University of Hong Kong. He has numerous professional honors–National Science Foundation Research Initiation Award, 1993; Ralph R. Teetor Educational Award from Society of Automotive Engineers, 1994; LaRoux K. Gillespie Outstanding Young Manufacturing Engineer Award from Society of Manufacturing Engineers, 1995; Boeing–A.D. Welliver Faculty Summer Fellow, Boeing, 1998; Chang Jiang (Cheung Kong) Scholars Award from the Ministry of Education of China and Li Ka Shing Foundation (Hong Kong). He received the Kayamori Best Paper Award of IEEE International Conference on Robotics and Automation in 2001, the Best Conference Paper Award of International CAD Conference & Exhibition in 2007, the Compliant Mechanisms Award of ASME 31st Mechanisms and Robotics Conference in 2007, Research Excellence Award of CUHK in 2008, China State Natural Science Prize (Second Class) from the Ministry of Science & Technology of China (2012), and ASME Design Automation Award (2013) from ASME. He is a Senior Editor of IEEE Trans. on Automation Science and Engineering, and served as an Associate Editor of IEEE Trans. on Robotics and Automation and ASME Journal of Manufacturing Science and Engineering. He was the Conference Chair of ASME 5th Design for Manufacturing Conference in 2000. He was the Program Chair (2005) and the Conference Chair (2006) of IEEE Conf. on Automation Science and Engineering. He was the Program Chair of IEEE/ASME International Conference on Advanced Intelligent Mechatronics in 2008, and General Co-Chair of IEEE International Conference on Robotics and Automation in 2011. He is a Distinguished Lecturer of IEEE Robotics and Automation Society (2006-2008). He is a Fellow of ASME, HKIE, and IEEE.
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