Imperial College London
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DrEmilioMartinez-Paneda

Faculty of Engineering, Department of Civil and Environmental Engineering

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 8188e.martinez-paneda Website

 
 
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Location

 

249Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Martinez-Paneda:2017:10.1016/j.tafmec.2017.09.007,
author = {Martinez-Paneda, E and del, Busto S and Betegon, C},
doi = {10.1016/j.tafmec.2017.09.007},
journal = {Theoretical and Applied Fracture Mechanics},
pages = {276--287},
title = {Non-local plasticity effects on notch fracture mechanics},
url = {http://dx.doi.org/10.1016/j.tafmec.2017.09.007},
volume = {92},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We investigate the influence of gradient-enhanced dislocation hardening on the mechanics of notch-induced failure. The role of geometrically necessary dislocations (GNDs) in enhancing cracking is assessed by means of a mechanism-based strain gradient plasticity theory. Both stationary and propagating cracks from notch-like defects are investigated through the finite element method. A cohesive zone formulation incorporating monotonic and cyclic damage contributions is employed to address both loading conditions. Computations are performed for a very wide range of length scale parameters and numerous geometries are addressed, covering the main types of notches. Results reveal a strong influence of the plastic strain gradients in all the scenarios considered. Transitional combinations of notch angle, radius and length scale parameter are identified that establish the regimes of GNDs-relevance, laying the foundations for the rational application of gradient plasticity models in damage assessment of notched components.
AU  - Martinez-Paneda,E
AU  - del,Busto S
AU  - Betegon,C
DO  - 10.1016/j.tafmec.2017.09.007
EP  - 287
PY  - 2017///
SN  - 0167-8442
SP  - 276
TI  - Non-local plasticity effects on notch fracture mechanics
T2  - Theoretical and Applied Fracture Mechanics
UR  - http://dx.doi.org/10.1016/j.tafmec.2017.09.007
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000417774700027&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/73418
VL  - 92
ER  -
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