On the post-processing of data obtained from cracked components
On the post-processing of data obtained from cracked components
The use of a simple singular value decomposition (SVD) technique to post-process far-field data from cracked components is discussed. The technique employs the series expansion for stress or displacements ahead of the crack tip, which is available for a wide range of configurations. The use of higher-order terms, necessary for the post-processing, is beneficial for two reasons: (a) it permits the abstraction of the maximum usable amount of information; (b) it gives a better understanding of the fracture mechanics, especially regarding crack tip plasticity and dynamic propagation. Several numerical cases are examined and a comparison is made with analytical results, permitting an evaluation to be made of the pure numerical error in the post-processing.
post-processing, cracked, components, simple, singular, value, decomposition, technique, far-field, data
67-71
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Demelio, G.
cb38aabe-9837-4ab2-aa87-60028fd7b82c
Pappalettere, C.
f66a5900-44ec-435f-b05e-f0bd22a4519f
1998
Ciavarella, M.
d5aa6350-b3d4-4a78-a670-9d78242f58c5
Demelio, G.
cb38aabe-9837-4ab2-aa87-60028fd7b82c
Pappalettere, C.
f66a5900-44ec-435f-b05e-f0bd22a4519f
Ciavarella, M., Demelio, G. and Pappalettere, C.
(1998)
On the post-processing of data obtained from cracked components.
The Journal of Strain Analysis for Engineering Design, 33 (1), .
Abstract
The use of a simple singular value decomposition (SVD) technique to post-process far-field data from cracked components is discussed. The technique employs the series expansion for stress or displacements ahead of the crack tip, which is available for a wide range of configurations. The use of higher-order terms, necessary for the post-processing, is beneficial for two reasons: (a) it permits the abstraction of the maximum usable amount of information; (b) it gives a better understanding of the fracture mechanics, especially regarding crack tip plasticity and dynamic propagation. Several numerical cases are examined and a comparison is made with analytical results, permitting an evaluation to be made of the pure numerical error in the post-processing.
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Ciav_98b.pdf
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Published date: 1998
Keywords:
post-processing, cracked, components, simple, singular, value, decomposition, technique, far-field, data
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Local EPrints ID: 23257
URI: http://eprints.soton.ac.uk/id/eprint/23257
ISSN: 0309-3247
PURE UUID: 0b18697f-4646-4fc5-a395-42a08b4838a6
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Date deposited: 01 Feb 2007
Last modified: 15 Mar 2024 06:45
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Contributors
Author:
M. Ciavarella
Author:
G. Demelio
Author:
C. Pappalettere
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