Subramanya, HY and Viswanath, S and Narasimhan, R (2007) Influence of crack tip constraint on void growth in pressure sensitive plastic solids-1: 2D analysis. Engineering Fracture Mechanics, 75. pp. 1045-1063.
Full text not available from this repository.Abstract
In this work, the effect of constraint on void growth near a notch tip under mode-I loading is investigated in materials13; exhibiting pressure sensitive yielding and plastic dilatancy. To this end, large deformation elasticx2013;plastic finite element13; analyses are performed using a two-dimensional (2D) plane strain, modified boundary layer formulation by prescribing13; the elastic K T field as remote boundary conditions. The analyses are conducted for different values of K (or J) and13; T-stress. The material is assumed to obey a finite strain, Extended Druckerx2013;Prager yield condition. The roles of pressure13; sensitivity, plastic dilatancy and yield locus shape on the interaction between the notch and a nearby void are studied by13; examining the distribution of hydrostatic stress and plastic strain in the ligament connecting them as well as the growth of13; notch and the void. The results show that void growth with respect to J is enhanced due to pressure sensitivity, and more so13; when the plastic flow is non-dilatational. By contrast, irrespective of pressure sensitivity, loss of crack tip constraint can13; significantly retard void growth.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Pressure sensitive yielding;Constraint effects;Ductile fracture;Void growth;Finite elements |
| Subjects: | ENGINEERING > Structural Mechanics AERONAUTICS > Aeronautics (General) |
| Depositing User: | Ms. Alphones Mary |
| Date Deposited: | 03 Jun 2009 |
| Last Modified: | 24 May 2010 04:26 |
| URI: | http://nal-ir.nal.res.in/id/eprint/5141 |
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