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research-article

Parallelized Finite Element Analysis of Knitted Textile Mechanical Behavior

[+] Author and Article Information
Dani Liu

Theoretical & Applied Mechanics Group, Department of Mechanical Engineering & Mechanics, Drexel University
dl636@drexel.edu

Seid Koric

National Center for Supercomputing Applications, University of Illinois at Urbana-Champaign; Department of Mechanical Science & Engineering, University of Illinois at Urbana-Champaign
koric@illinois.edu

Antonios Kontsos

Theoretical & Applied Mechanics Group, Department of Mechanical Engineering & Mechanics, Drexel University
antonios.kontsos@drexel.edu

1Corresponding author.

ASME doi:10.1115/1.4041869 History: Received May 10, 2018; Revised September 28, 2018

Abstract

Direct numerical simulations (DNS) of knitted textile mechanical behavior are for the first time conducted on High Performance Computing (HPC) using both the explicit and implicit finite element analysis (FEA) to directly assess effective ways to model the behavior of such complex material systems. Yarn-level models including interyarn interactions are used as a benchmark computational problem to enable direct comparison in terms of computational efficiency between explicit and implicit methods. The need for such comparison stems from both a significant in-crease in the degrees of freedom with increasing size of the computational models considered as well as from memory and numerical stability issues due to the highly complex three-dimensional mechanical behavior of such 3D architectured materials. Mesh and size dependency, as well as parallelization in an HPC environment are investigated. The results demonstrate a satisfying accuracy combined with higher computational efficiency and much less memory requirements for the explicit method, which could be leveraged in modeling and design of such novel materials.

Copyright (c) 2018 by ASME
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