# High-Performance Numerical Modeling of Nanofabrics with Distinct Element Method

## TL;DR

This paper introduces a high-performance, flexible numerical modeling framework for nanofabrics and composites, combining advanced fiber representation with efficient parallel computation, validated through a mechanical test on carbon nanotube textiles.

## Contribution

The paper presents a novel, scalable modeling system for micro- and nanofiber composites using rigid body chains and enhanced vector formalism, integrated into the waLBerla framework.

## Key findings

- High parallel performance demonstrated
- Accurate modeling of nanofiber mechanics achieved
- Effective simulation of carbon nanotube textiles

## Abstract

A universal framework for modeling composites and fabrics of micro- and nanofibers, such as carbon nanotubes, carbon fibers and amyloid fibrils, is presented. Within this framework, fibers are represented with chains of rigid bodies, linked with elastic bonds. Elasticity of the bonds utilizes recently developed enhanced vector model formalism. The type of interactions between fibers is determined by their nature and physical length scale of the simulation. The dynamics of fibers is computed using the modification of rigid particle dynamics module of the waLBerla multiphysics framework. Our modeling system demonstrates exceptionally high parallel performance combined with the physical accuracy of the modeling. The efficiency of our approach is demonstrated with illustrative mechanical test on a hypothetical carbon nanotube textile.