Session: Rising Stars of Mechanical Engineering Celebration & Showcase

Paper Number: 147926

147926 - Multiscale Modeling of Complex Behaviors of Nano-Crumples 

Understanding the intricate crumpling behavior of nanosheets across various scales is crucial for diverse engineering and technological applications. In this study, we employ atomistically informed coarse-grained molecular dynamics (CG-MD) simulation to investigate the crumpling behavior of nanosheet-based materials with varying geometric and topological characteristics. Our modeling results demonstrate that the adhesive or sticky nature of the sheet's surface enhances its compressive strength without altering the governing force scaling. Additionally, our evaluation of stress and curvature distributions shows that mechanical heterogeneity strongly relies on interfacial adhesion and defects. Furthermore, we develop a machine learning (ML) model utilizing the modeling data to predict several key structural and mechanical properties of crumpled sheets. Our established modeling framework provides fundamental insights into the complex behavior of nanosheets during crumpling, which is essential for establishing structure-property relationships necessary for designing and engineering crumpled matter.

Presenting Author: Wenjie Xia Iowa State University

Presenting Author Biography: Dr. Wenjie Xia is currently an Associate Professor in the Department of Aerospace Engineering at Iowa State University. He obtained his Ph.D. from Northwestern University in 2016. His research focuses on understanding the complex behaviors of hierarchical structural materials via bottom-up multiscale modeling and data-driven approaches.

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