AE Seminar
“Constitutive Modeling, Instabilities and Fracture: From Machine Learning Tools and Techniques to Bio-Inspiration for the Next Generation Of Composites”
ft.
Nikolaos Bouklas
Associate Professor, Mechanical and Aerospace Engineering, Cornell University
Tuesday, February 25
11 am - 12 pm
Weber SST III, Classroom 1
About the Seminar:
This talk will cover three main focus areas surrounding computational solid mechanics, aiming to I) outline pathways that machine learning (ML) can enable accurate structural simulations, II) focus in multiscale materials modeling problems for damage and fracture related to design of protective equipment, and III) explore bio-inspired discovery of the next-generation of resilient and light-weight composites. The first topic will focus on automated and trustworthy constitutive modeling enabled by a fusion of data-driven and physics-augmented approaches with an emphasis on structural level information. The second topic will explore the multiscale damage cascade in elastomeric materials, from statistical mechanics at the chain level, network assumptions, and nonlocal damage and fracture theories. Finally, the third topic will explore instabilities in tendon across different lengthscales, from loss of ellipticity, to micro-necking of collagen fibrils, domain formation at the fascicle level, and rethinking the design template for composites. The main aim of this broad talk is to highlight opportunities for the role of ML in computational solid mechanics and aerospace applications, but also at the same time, highlight potential bottlenecks for its future application in structural simulations and materials modeling.
About the Speaker:
Dr. Bouklas is an Associate Professor at the Sibley School of Mechanical and Aerospace Engineering at Cornell University and a Simulation Intelligence Resident at Pasteur Labs. Prior to that, he was a postdoctoral researcher at the Laboratory for Multiscale Materials Modeling at EPFL, Switzerland, and at the Oden Institute at the University of Texas at Austin. He received his PhD from the Aerospace Engineering and Engineering Mechanics department at the University of Texas at Austin and obtained his Diploma in Mechanical Engineering from the Aristotle University of Thessaloniki, Greece. Dr. Bouklas' research focuses in the field of computational solid mechanics. He aims to improve the fundamental understanding of materials and structures, and enhance the predictive capabilities in relevant aerospace engineering and defense applications technologies. He is the recipient of the Young Investigator Program award from the Air Force Office of Scientific Research, and is in the leadership of the Cornell SciAI Center funded by ONR.