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Evaluation of a direct time integration scheme for dynamic analysis

Author(s)
Sanchez, Jennifer D. (Jennifer D'Metria)
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Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Advisor
Klaus-Jürgen Bathe.
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M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
Direct integration schemes are important tools used in the dynamic analysis of many structures. It is critical that the solutions obtained from these schemes produce accurate results. Currently, one of the most widely used direct integration schemes is the trapezoidal rule. It is favored because it is a method that requires single steps and its results are second-order accurate. However, in cases where there are large deformations and longer integration times, the trapezoidal rule fails. A new composite method scheme shows promise in maintaining stability where the trapezoidal rule fails. It is a two step method that makes use of the trapezoidal rule and the three-point Euler backward method. The purpose of this study is to compare the trapezoidal rule and the new composite method using two nonlinear problems in order to determine if the composite method generates more accurate results than the trapezoidal rule.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.
 
Includes bibliographical references (p. 43).
 
Date issued
2007
URI
http://hdl.handle.net/1721.1/40479
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Publisher
Massachusetts Institute of Technology
Keywords
Mechanical Engineering.

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