Structure Genome: A Revolutionary Multiscale Approach to Bridging Materials Genome and Structural Analysis
Speaker: Dr. Wenbin Yu, Purdue University
Date: Dec 8, 2017; Time: 2:30 pm Location: UTEB 175
Abstract: Materials Genome Initiative (MGI) and Integrated Computational Materials Engineering (ICME) have the potential to accelerate discovery, developing, manufacturing, and deploying of advanced materials. However, it is usually not the material performance, but the structural performance or system performance we are pursuing. To fill the gap between materials genome and structural analysis, the concept of Structure Genome (SG) is proposed. SG is the smallest mathematical building block containing all the constitutive information for a structure. The Mechanics of Structure Genome (MSG) represents a revolutionary approach to multiscale modeling drastically different from the conventional bottom-up multiscale modeling approaches. The principle of minimum information loss (PMIL) is used to avoid a priori assumptions commonly invoked in other approaches. MSG confines all approximations to the constitutive modeling which can construct constitutive models for all types of structures including 3D solids, 2D plates/shells, and 1D beams, directly linking the structural properties with microstructural details. MSG simplifies multiscale constitutive modelling to answer three fundamental questions: 1) what is the original model needed for capturing relevant physics? 2) what is the model wanted for a particular design? 3) what is the SG? MSG allows one to choose the starting scale and ending scale and capture details as needed and affordable without invalid scale separation and assumptions within scales. A companion code called SwiftComp is developed as a general-purpose constitutive modeling software which can be used as a standalone code for virtual testing of structures and materials and as a plugin for conventional finite element software packages such as Abaqus, Ansys, Nastran with efficient high-fidelity composites modeling capabilities. SG concept is applicable to any structures and materials featuring heterogeneity and anisotropy including but not limited to composite materials, 3D printed materials, metamaterials, biomaterials, auxetic materials, smart materials, soft materials, etc.
Biographical Sketch: Dr. Wenbin Yu is a Professor in the School of Aeronautics and Astronautics at Purdue University after serving ten years as a faculty at Utah State University. He received his PhD in Aerospace Engineering from Georgia Tech and MS in Engineering Mechanics from Tsinghua University, China. He serves as Director for the Composites Design and Manufacturing HUB (cdmHUB.org), and Associate Director for the Composites Virtual Factory HUB (cvfHUB.org), and is the CTO for AnalySwift LLC (analyswift.com). His expertise is in micromechanics and structural mechanics with applications to composite/smart materials. He has developed several computer codes used today by thousands of researchers and engineers in government labs, universities, research institutes and companies. He is an ASME Fellow and AIAA Associate Fellow. He served as the chair for ASME Structures and Materials Technical Committee and currently serves as the vice chair for AIAA Materials Technical Committee. He serves on the editorial boards of two international journals.