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Derivative procedure for finite element computation of change in natural frequencies with crack size

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Title Derivative procedure for finite element computation of change in natural frequencies with crack size
 
Creator MAITI, SK
NANDWANA, BP
 
Subject location
beam
 
Description Vibration measurement can be a pathological means for detecting any changes in geometry of a machine or structural component due to development of a crack or extension of an existing crack [1-4]. The ability to predict changes in natural frequencies with crack size can be very useful in this connection. The primary objective of this note is to present an efficient finite element scheme for this purpose. The accuracy of the method is illustrated through three examples, one each on mode 1, mixed mode and kinked crack. The secondary objective is to present the lumped mass matrix based on diagonal scaling for the widely used quarter point singularity element, and show the performance of the multicorner singularity elements [5] with respect to an extraction of eigenvalues. The performance of the singularity elements is known so far only for stress analysis.
 
Publisher KLUWER ACADEMIC PUBL
 
Date 2011-08-17T04:10:14Z
2011-12-26T12:55:20Z
2011-12-27T05:44:07Z
2011-08-17T04:10:14Z
2011-12-26T12:55:20Z
2011-12-27T05:44:07Z
1996
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF FRACTURE, 77(3), R47-R53
0376-9429
http://dx.doi.org/10.1007/BF00018783
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9739
http://hdl.handle.net/10054/9739
 
Language en