Simulation of Uniaxial Compression for Flexible Fibers of Wheat Straw Using the Discrete Element Method

dc.contributor.author Schramm, Matthew W.
dc.contributor.author Tekeste, Mehari
dc.contributor.author Steward, Brian
dc.contributor.department Agricultural and Biosystems Engineering
dc.date.accessioned 2023-01-18T16:50:49Z
dc.date.available 2023-01-18T16:50:49Z
dc.date.issued 2021
dc.description.abstract To accurately simulate a discrete element method (DEM) model, the material properties must be calibrated to reproduce bulk material behavior. In this study, a method was developed to calibrate DEM parameters for bulk fibrous materials using uniaxial compression. Wheat straw was cut to 100.2 mm lengths. A 227 mm diameter cylindrical container was loosely filled with the cut straw. The material was pre-compressed to 1 kPa. A plunger (50, 150, or 225 mm diameter) was then lowered onto the compressed straw at a rate of 15 mm s-1. This experimental procedure was simulated using a DEM model for different material properties to generate a simulated design of experiment (DOE). The simulated plunger had a travel rate of 40 mm s-1. The contact Young‘s modulus, bond Young‘s modulus, and particle-to-particle friction DEM parameters were found to be statistically significant in the prediction of normal forces on the plunger in the uniaxial compression test. The DEM calibration procedure was used to approximate the mean laboratory results of wheat straw compression with root mean square (RMS) percent errors of 3.77%, 3.02%, and 13.90% for the 50, 150, and 225 mm plungers, respectively.
dc.description.comments This article is published as Schramm, Matthew W., Mehari Z. Tekeste, and Brian L. Steward. "Simulation of uniaxial compression for flexible fibers of wheat straw using the discrete element method." Transactions of the ASABE 64, no. 6 (2021): 2025-2034. DOI: 10.13031/trans.13995. Copyright 2021 American Society of Agricultural and Biological Engineers. Posted with permission.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/kv7k01Gv
dc.language.iso en
dc.publisher American Society of Agricultural and Biological Engineers
dc.source.uri https://doi.org/10.13031/trans.13995 *
dc.subject.disciplines DegreeDisciplines::Engineering::Bioresource and Agricultural Engineering
dc.subject.keywords Calibration
dc.subject.keywords DEM
dc.subject.keywords DOE
dc.subject.keywords Flexible DEM particle
dc.subject.keywords Uniaxial compression
dc.subject.keywords Wheat straw
dc.title Simulation of Uniaxial Compression for Flexible Fibers of Wheat Straw Using the Discrete Element Method
dc.type Article
dspace.entity.type Publication
relation.isAuthorOfPublication 9bbbff7c-7386-4a17-955f-86c7bde1d8f4
relation.isAuthorOfPublication ef71fa01-eb3e-4e29-ade7-bcb38f2968b0
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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