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Experimental derivation of stiffness matrix of sheet metal joint

The thesis presents the study on the three-dimensional experimental derivation stiffness matrix of sheet metal joint substructure based on the basic principle of finite element method (FEM). Normally in FEM, the material properties of a complete structural system can be represented by Young‟s modulu...

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Main Author: Yusoff, Abdul Hafiez
Format: Thesis
Language:English
Published: 2013
Online Access:http://psasir.upm.edu.my/id/eprint/56059/1/FK%202013%2080RR.pdf
http://psasir.upm.edu.my/id/eprint/56059/
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spelling my.upm.eprints.560592017-07-20T02:43:43Z http://psasir.upm.edu.my/id/eprint/56059/ Experimental derivation of stiffness matrix of sheet metal joint Yusoff, Abdul Hafiez The thesis presents the study on the three-dimensional experimental derivation stiffness matrix of sheet metal joint substructure based on the basic principle of finite element method (FEM). Normally in FEM, the material properties of a complete structural system can be represented by Young‟s modulus, Poisson‟s ratio, density, surface area and etc but if the structure deflection influence coefficients or stiffness matrix are known, the behavior of complete structural system can be defined. One of user defined element existed in NASTRAN that rarely used is general (GENEL) element, the GENEL entry is used to define general elements whose material properties are defined in terms of deflection influence coefficients or stiffness matrix which can be connected between any number of grid points. A systematic approach of stiffness matrix extraction of a sheet metal joint has been successfully studied and developed. The experimental stiffness matrix which represents the actual behavior of the substructure is then entered into NASTRAN as a new element, GENEL. Comparison of results between the experimental and the finite element analysis is carried to validate the method employed. Excellent agreement with the experimental results has been observed which confirms the accuracy of the approached employed. The methodology of extraction stiffness coefficients experimentally has also been successfully developed on the basis of the direct stiffness method. 2013-03 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/56059/1/FK%202013%2080RR.pdf Yusoff, Abdul Hafiez (2013) Experimental derivation of stiffness matrix of sheet metal joint. Masters thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The thesis presents the study on the three-dimensional experimental derivation stiffness matrix of sheet metal joint substructure based on the basic principle of finite element method (FEM). Normally in FEM, the material properties of a complete structural system can be represented by Young‟s modulus, Poisson‟s ratio, density, surface area and etc but if the structure deflection influence coefficients or stiffness matrix are known, the behavior of complete structural system can be defined. One of user defined element existed in NASTRAN that rarely used is general (GENEL) element, the GENEL entry is used to define general elements whose material properties are defined in terms of deflection influence coefficients or stiffness matrix which can be connected between any number of grid points. A systematic approach of stiffness matrix extraction of a sheet metal joint has been successfully studied and developed. The experimental stiffness matrix which represents the actual behavior of the substructure is then entered into NASTRAN as a new element, GENEL. Comparison of results between the experimental and the finite element analysis is carried to validate the method employed. Excellent agreement with the experimental results has been observed which confirms the accuracy of the approached employed. The methodology of extraction stiffness coefficients experimentally has also been successfully developed on the basis of the direct stiffness method.
format Thesis
author Yusoff, Abdul Hafiez
spellingShingle Yusoff, Abdul Hafiez
Experimental derivation of stiffness matrix of sheet metal joint
author_facet Yusoff, Abdul Hafiez
author_sort Yusoff, Abdul Hafiez
title Experimental derivation of stiffness matrix of sheet metal joint
title_short Experimental derivation of stiffness matrix of sheet metal joint
title_full Experimental derivation of stiffness matrix of sheet metal joint
title_fullStr Experimental derivation of stiffness matrix of sheet metal joint
title_full_unstemmed Experimental derivation of stiffness matrix of sheet metal joint
title_sort experimental derivation of stiffness matrix of sheet metal joint
publishDate 2013
url http://psasir.upm.edu.my/id/eprint/56059/1/FK%202013%2080RR.pdf
http://psasir.upm.edu.my/id/eprint/56059/
_version_ 1643836078360100864
score 13.211869

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