Parallelized Finite Element Analysis of Knitted Textile Mechanical Behavior

Author:

Liu D.1,Koric S.2,Kontsos A.3

Affiliation:

1. Theoretical and Applied Mechanics Group, Department of Mechanical Engineering and Mechanics, Drexel University, 2991 W. School House. Ln., Apt. PW21, Philadelphia, PA 19144

2. National Center for Supercomputing Applications; Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801

3. Theoretical and Applied Mechanics Group, Department of Mechanical Engineering and Mechanics, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104 e-mail:

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 increase in the degrees-of-freedom (DOFs) with increasing size of the computational models considered as well as from memory and numerical stability issues due to the highly complex three-dimensional (3D) 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.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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