A COMPARISON OF METHODS FOR CALCULATING ENERGY-RELEASE RATES

abstract

• We compare two methods for calculating the energy released during quasi-static crack advance. One method is based on a surface integral (line integral in two dimensions) expression for the energy release rate, whereas the other method is based on a volume (area) integral representation. A concise derivation of the volume (area) integral expression is given using a virtual-work-type identity for Eshelby's energy momentum tensor. The finite-element implementation of the volume (area) integral formulation corresponds to the virtual crack extension method. Within the context of this formulation, we outline a procedure for calculating pointwise values of the energy release rate along a three-dimensional crack front. For illustrative purposes, numerical examples are presented for a fully plastic, plane strain, edge-cracked panel subject to combined tension and bending. 1985.

authors

• Needleman, Alan

published proceedings

• ENGINEERING FRACTURE MECHANICS

altmetric score

• 3

author list (cited authors)

• LI, F. Z., SHIH, C. F., & NEEDLEMAN, A.

citation count

• 519

complete list of authors

• LI, FZ||SHIH, CF||NEEDLEMAN, A

publication date

• January 1985

publisher

• Elsevier  Publisher

published in

• Engineering Fracture Mechanics  Journal

keywords

• 7 Affordable And Clean Energy

Digital Object Identifier (DOI)

• 10.1016/0013-7944(85)90029-3

start page

• 405

end page

• 421

volume

• 21

issue

• 2

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2F0013-7944%2885%2990029-3

user-defined tag

• 7 Affordable and Clean Energy