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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.19 [2012] >
IJEMS Vol.19(2) [April 2012] >
| Title: | Two-dimensional elastic-plastic cracked finite element for fracture applications |
| Authors: | Kalanad, Aysha
Rao, B N |
| Keywords: | Cracked finite element
Elastic-plastic fracture mechanics
User element
ABAQUS
Natural frequency |
| Issue Date: | Apr-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | In this paper a novel
two-dimensional finite element with a single, non-propagating, open embedded
edge crack is developed based on elastic-plastic fracture mechanics. The
influence of crack on the local flexibility of the structure is accounted for
by the reduction of the element stiffness as a function of the crack length,
instead of physically modeling the crack within the element. The proposed
element accounts the influence of crack tip plasticity, at the cracked
cross-section. The components of the stiffness matrix for the proposed cracked
element are derived based on the Castigliano’s first principle. The element is
implemented as a user element (UEL) subroutine in ABAQUS. The proposed element
can be applied in a wide range of fatigue and fracture applications in order to
determine changes in static, dynamic, and stability characteristics of cracked
structures. |
| Page(s): | 95-106 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.19(2) [April 2012]
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