International Journal of Emerging Trends & Technology in Computer Science
A Motivation for Recent Innovation & Research
ISSN 2278-6856
www.ijettcs.org
Call for Paper, Published Articles, Indexing Infromation
Title: |
Verification and validation of a finite element model of a human-powered vehicle chassis
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Author Name: |
Carlos Urrego, Uriel Zapata |
Abstract: |
Abstract:The aim of this study was to evaluate the impact of
verification and validation processes in the predictive precision
and accuracy of a finite element model of a human-powered
vehicle (HPV) chassis. The three-dimensional (3D) geometry of
a steel frame structure was obtained using a 3D laser scanner to
create a static finite element model of the structural system.
Static operational loading conditions were physically
represented using hollow concrete blocks and subsequently
simulated in the software SolidWorks. Basic boundary
conditions were applied to the physical model in order to ensure
structural stability and resemble real-world settings. The
verification and validation processes were developed according
to the Guide for Verification and Validation in Computational
Solid Mechanics from the American Society of Mechanical
Engineers. The verification process was performed through a
sensibility analysis, in which the model was subsequently remeshed
by increasing the number of elements until output
values converged. The validation process was performed by
comparing the computational model’s stress and strain outputs
with the corresponding quantitative values obtained from a
strain gauge located in the physical model; the strain
distribution of one part of the model was compared with that
obtained using a photo-elastic technique. It was found that
716,890 was an acceptable number of solid tetrahedral elements
needed to guarantee reliability in the HPV model outputs. In
addition, the relative error between the experimental outputs and
the computational model was 0.13% for normal principal stress
and 3.73% for normal principal strain. These findings make
clear that the processes of validation and verification are
essential for quantifying the uncertainties and evaluating the
predictive capacities of computational models of physical
structures.
Keywords:Static analysis, mechanical design, structure,
uncertainty, accuracy, precision. |
Cite this article: |
Carlos Urrego, Uriel Zapata , "
Verification and validation of a finite element model of a human-powered vehicle chassis " , International Journal of Emerging Trends & Technology in Computer Science (IJETTCS),
Volume 9, Issue 5, September - October 2020 , pp.
014-022 , ISSN 2278-6856.
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