A brittle fracture criterion for PMMA V-notches tensile specimens based on a length-enriched eXtended Finite Element approach
Journal Title: Frattura ed Integrità Strutturale - Year 2011, Vol 5, Issue 17
Abstract
A criterion for the prediction of the static failure loads in tensile PMMA specimens with sharp notches is presented. The proposed criterion is based on a regularized version of the eXtended Finite Element Method (XFEM), which has been previously applied to concrete-like materials. The main feature of the proposed approach is that the cracking process is not treated as a local process, but it is modeled by assuming that macro-cracks stem from the interaction of micro-cracks within a finite width process zone. The case of a brittle materials with thin process zone is tackled by assuming one layer of enriched finite elements. Preliminary results concerning PMMA specimens subjected to mode-one loading are presented.
Authors and Affiliations
E. Benvenuti, R. Tovo, P. Livieri
Keywords
Related Articles
- EP ID EP85985
- DOI 10.3221/IGF-ESIS.17.03
- Views 86
- Downloads 0
TWSME of a NiTi strip in free bending conditions:experimental and theoretical approach
This paper deals with the two-way shape memory effect (TWSME) induced on a strip of a nearequiatomicNiTi alloy by means of the shape memory cycling training method. This procedure is based on thedeformation in mart...
Crack path simulation for cylindrical contact under fretting conditions
In this work different strategies to estimate crack path for cylindrical contacts under fretting conditions are carried out. The main goal is to propose and to evaluate methodologies not only to estimate the ...
Measurement and simulation of crack growth rate and direction under non-proportional loadings
A series of fatigue experiments on thin-walled tubes under tension and torsion, the experimental results – crack path and crack growth life – are measured and compared. It is observed that the cracks follow a ...
Fracture failure analysis of baseplates in a fluidic amplifier made of WC-11Co cemented carbide
A fluidic amplifier is a crucial automatic control component in a liquid jet hammer used to drill hard formations in the oil industry. This study aims to determine the true causes of the fracture failure of basepla...
Multi-scale crack closure measurements with digital image correlation on Haynes 230
An experimental campaign was developed to study fatigue crack growth in Haynes 230, a Ni-based superalloy. The effects of crack closure were investigated with digital image correlation, by applying two different...