Fracture Mechanics vs. Damage Mechanics
I was wondering what are the advantages of damage mechanics and fracture mechanics over each other? Specially in order to model the delamination phenomenon.
Abaqus 6.9 release has XFEM
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Hi All,
The new Abaqus 6.9 release offers new capabilities for fracture and failure (XFEM) and much more. http://www.simulia.com/products/abaqus_fea
please help for postbuckling analysis in ANSYS
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I am trying to perform postbuckling analysis of plates in ANSYS. But something confuses my mind. After linear buckling analysis I use scaled firtst buckling mode shape to generate initial imperfections. Then I initiate nonlinear geometric analysis by NLGEOM command. Collapse load or final converged iteration changes according to NSUBST option. I am trying to give higher Substep to obtain more sensitive and reliable results like 10000. But NSUBST with 100 sometimes reaches higher loads than using 10000. Which one is a correct approach?
Could anyone help me?
NDE residual stress
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More information about residual stress tester
The residual stress in a metal do not depend on its hardness, but from the module of elasticity or Young module and from its chemical composition (density).
In search of articles on mesoscale FE modeling of sintering
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Hi. I'm now starting my PhD on a project on sintering of hard metal.
I'm doing a literature study, but I have failed to find any articles that uses FE analysis on the micro/mesoscale. All of them seems to handle this only with a homogenized model on the macroscale.
If I get to be picky, I would prefer something with hardmetal, but at this point, anything would be great.
I would also be very happy to find any suitable reading on FE-analysis on solid-liquid-pore mixtures.
Failure Surface Graphics in Stress Space
A new section has been added to the website on failure criteria for engineering materials. This new work displays many different three-dimensional computer graphics of failure criteria surfaces in stress space. The full range of isotropic materials are covered from ductile metals to brittle ceramics and glasses and beyond. All of these computer generated graphics can be seen at www.failurecriteria.com/failuresurfacegr.html.
Prof. Ares Rosakis has been elected to a fellow of the American Academy of Arts and Sciences, 2009
Solid mechanician and Caltech Faculty Member Named to American Academy of Arts and Sciences: Caltech professor Ares Rosakis, is among the 210 new fellows elected to the American Academy of Arts and Sciences this year. They join an assembly that was founded in 1780 by John Adams, James Bowdoin, John Hancock, and other scholars to provide practical solutions to pressing issues.
Stroh formulation
I want to know about the basics of stroh fromulation and its application in Piezoelectric material.I didn't find the basic lecture notes or the material regarding that on the internet.
kuldeep sharma
Geometric non-linearity basic question
Hi,
I've been reading the book on Non-Linear Finite Element Analysis by Crisfield and have the following questions:
1.Considring the equation 1.10 in Crisfield's book on page 4, it is:
Kt = EA/l (z/l)^2 + EA/l (2zw + w^2/ L^2) + N/L
where:
Kt->is the tangent stiffness matrix
z->in itial displacement
L->Length of the bar-as an approximation the undeformed length of the bar is considered.
N->internal force in the bar.
What Platform Would You Prefer for a Software That Helps in Learning FEM---Windows or Java?
Ideally, this post of mine should carry a poll, but I guess as an ordinary user, I cannot insert one.
Currently, I am writing a small software program that is especially designed to help learn FEM. For instance, I will be providing detailed listings for every intermediate step, e.g. all those [D], [B], [k], etc. matrices for each element, as well as the final assembled global system {F} = [K]{d} and its solution separately at each Gauss point. Only linear static problems for the time being; will add transients/eigenvalue problems in near future.