Numerical modeling of a propagating crack.
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Authors
Christy, Clifford T.
Subjects
Crack propagation
Stationary element
Moving node element
Central difference method
Stationary element
Moving node element
Central difference method
Advisors
Kwon, Young W.
Date of Issue
1993-06
Date
June 1993
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
In the numerical modeling of the crack propagation in dynamic fracture using stationary elements. a discrete and sudden release of node at the crack tip creates spurious oscillation in the kinetic and strain energy values. In order to reduce the oscillation, a moving node element was utilized. This element can model a continuous crack tip movement more closely. The moving node element is compatible with surrounding regular isoparametric elements and no remeshing is required during the crack propagation. In addition, two different central difference schemes were compared, and their results were almost the same.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
49 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.