@Article{icces.2010.014.043,
AUTHOR = {X.-H.  Chen, Y.-W.  Mai},
TITLE = {On essential work of fracture method: theoretical consideration and numerical simulation},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {14},
YEAR = {2010},
NUMBER = {2},
PAGES = {43--50},
URL = {http://www.techscience.com/icces/v14n2/32465},
ISSN = {1933-2815},
ABSTRACT = {A general elastoplastic fracture mechanics theory is proposed for applying the Essential-Work-of-Fracture (EWF) Method to quasi-static and impact toughness characterization. Advanced finite element modeling is developed to simulate the EWF Method using the crack-tip opening angle criterion (CTOA) and the constitutive relation of the material under consideration. For Poly(ethylene-terephlate) (PET) films, the load-displacement curves are calculated for the whole crack propagation process of deeply double-edge notched tensile specimens (DENT) with different ligament lengths so as to determine the total work, the essential work and the non-essential work of fracture. The effects of specimen gauge length and ligament length on crack growth stability are also discussed in combination with experimental results.},
DOI = {10.3970/icces.2010.014.043}
}