The concept of structure gene (SG) is proposed to fill the gap between materials genome and structural analysis. SG is the smallest mathematical building block connecting materials and structures and contains all the constitutive information needed 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 for all types of structures including 3D solids, 2D plates/shells, and 1D beams, directly linking the structural properties with microstructural details. 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 by itself for virtual testing of structures and materials or as a plugin for conventional FEA packages. MSG is applicable to structures and materials featuring heterogeneity and anisotropy including but not limited to composites, 3D printed materials, metamaterials, biomaterials, auxetic materials, smart materials, soft materials, etc. This talk will also report recent developments of MSG including machine-learning assisted multiscale modeling, thin-walled structures, deployable structures, metamaterials, heterogeneous solid element, and composites manufacturing simulation.
Dr. Wenbin Yu is a Professor in the School of Aeronautics and Astronautics at Purdue University. He received his PhD in aerospace engineering from Georgia Tech and MS in engineering mechanics from Tsinghua University. He serves as the Director for Composites Design and Manufacturing HUB (cdmHUB.org) and the CTO for AnalySwift LLC (analyswift.com). His expertise is in micromechanics and structural mechanics with applications to anisotropic, heterogeneous materials and structures. He has developed over 10 computer codes which are being used by tens of 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 AIAA Materials Technical Committee. He currently serves as the chair for ASME Aerospace Division. He also serves on the editorial boards of six international journals and the ASME IMECE Congress Steering Committee.