Generating Rough surface for Abaqus using MATLAB

The attached includes m code and usage

Background

•It is often required to investigate the effect of surface roughness with FE simulation

- Example: friction, wear, fluid squeezing, thermal contact, vehicle on the rough road etc.

•Abaqus / CAE does not support the random surface generation

Usage

Description on the MATLAB function

•MATLAB code input parameters (Lx,Ly,Lz,N,sn_x,sn_y,Wb_a,Wb_b) >> Abaqus inp file (orphan mesh)

•Lx, Ly, Lz : length of periodic cell for x, y, and z-direction (Lz=0 generates 3D surface)

•N: number of division for the distance between the sampling points

•sn_x, sn_y: number of sampling points for x and y-direction

•Wb_a, Wb_b: Weibull distribution parameters

•Download the Rand_surf.m file and put it in the MATLAB directory (default is C:User\Document\MATLAB)

•Enter [Nodes,Elements]=Rand_surf(Lx,Ly,Lz,N,sn_x,sn_y,Wb_a,Wb_b) in MATLAB command window

•Roughness parameters and information on the Nodes and Elements are displayed after execution

•Nodes and Elements lists for Abaqus input file is stored in MATLAB workspace

Abaqus input file is generated in MATLAB working directory

Import in Abaqus / CAE

•Open the inp file in Abaqus/CAE

•File-import-Model-Choose Abaqus input File in File Filter

Further information

Demo video (Youtube): https://youtu.be/DdnmJvsBCnY

Tutorial: refer to the pdf in the zip file

+Note

* You can also use Rough Surface Generator (RSGen) plugin for Abaqus/CAE

* Contact: [e-mail]

Demo video : https://youtu.be/kuCzG_OzWTM