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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.18 [2011] >
IJEMS Vol.18(1) [February 2011] >
| Title: | Vibration analysis of delaminated composite beams using analytical and FEM models |
| Authors: | Çallioğlu, Hasan
Atlihan, Gökmen |
| Keywords: | Natural frequency
Vibration
FEM
Analytical model
Delamination |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | In
this study, the effects of delamination length and orientation angle on the
natural frequency of symmetric composite beams are investigated, analytically
and numerically. The analytical method is developed using the Timoshenko beam
theory. The transverse shear effect and the rotary inertia terms are taken into
account in the governing equations of vibration. Two dimensional finite element
models of the delaminated beams are established using contact element at the
ANSYS. The values of the natural frequency in laminated beams are obtained
using the normal penalty stiffness that is chosen as the elasticity modulus for
the contact element of the delamination region. When the analytical results are
compared with numerical results and the results in literature, it is seen that
the results are very close to each other. It is shown that natural frequencies
decrease when delamination length in the beam increases and the natural
frequencies change with the change of orientation angle. |
| Page(s): | 7-14 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.18(1) [February 2011]
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