Proc. of the 13th ASCE Engineering Mechanics Division Specialty
Conference
Johns Hopkins University, Baltimore, June 13-16, 1999 (CD-ROM)
NONLOCAL DAMAGE MODELS:
PRACTICAL ASPECTS AND OPEN ISSUES
Milan Jirásek
Swiss Federal Institute of Technology
LSC -DGC,
EPFL, 1015 Lausanne,
Switzerland
Abstract
The purpose of this paper is to discuss certain difficulties encountered
when nonlocal constitutive models are applied in practical engineering
analyses. Some of the problems remain unnoticed in theoretical studies
but they may invalidate the results of large-scale simulations.
Conclusions
We have briefly described and illustrated two aspects of nonlocal damage
models that are not apparent in simple academic examples, namely spurious
shifting due to gravity forces and pathological interaction between tensile
and compressive regions.
The complete paper can be downloaded in the PostScript
format (9MB) or PDF format (130kB).
EPFL / 13 September 1999 / milan.jirasek@epfl.ch