Prof. Lifeng Wang presents on 3D-Printed Mechanical Metamaterials

Date: April 21, 2021

Bio: Dr. Lifeng Wang is an Associate Professor in the Department of Mechanical Engineering at Stony Brook University. Before joining Stony Brook, he worked as a postdoctoral associate at Massachusetts Institute of Technology (MIT). He received his B.E. and Ph.D. from Tsinghua University, majoring in Solid Mechanics. Prof. Wang received National Excellent Doctoral Dissertation Award of P.R. China (2008) and Natural Science Award from Ministry of Education of China (2009). Prof. Wang has wide research interests in solid mechanics, materials modeling, materials testing and characterization, rapid prototyping and 3D printing, biological and bio-inspired materials, phononic crystals and metamaterials. His research has been cited more than 3000 times and has reported in MIT Today’s Spotlight, MIT News, NBC News, Nature News, Material Views, PhysOrg, and other media

Abstract: Mechanical metamaterials are becoming an emerging frontier in scientific research and engineering innovation due to their unprecedented physical properties, arising from the innovative geometrical design of unit cells and constituent materials. Meanwhile, when in response to different stimuli, mechanical metamaterials can be reconfigured beyond their original designs by reversibly changing the size, shape, and symmetry via simple deformation, offering enhanced flexibility in performance and tunable properties. Mechanical metamaterials synergistically integrate mechanics, geometry, design, properties, and manufacturing. These materials have been of great interest to mathematicians, physical scientists, material scientists, and biologists. These materials can offer advantages, such as light weight, easy processing, large deformation capability, and actuation ability, making them prime candidates for next generation structural and multifunctional materials. In this webinar, the speaker will represent recent studies on architected lattice metamaterials, negative Poisson’s ratio (auxetic) materials, hierarchical honeycombs, bio-inspired heterogeneous and hierarchical materials. All these mechanical metamaterials can be easily fabricated using PolyJet multi-material printing technique. The material design strategy introduced here will provide insights into the development of novel classes of architected materials with potential applications in energy absorption, vibration control, responsive devices, soft robotics, extreme damping composites, and mechanical actuators.

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