These notes were initially written when I taught fracture mechanics in spring 2010, and were updated when I taught the course again in 2014.

You can access all notes for the course on fracture mechanics. 

Dear mechanicans,

        For non-local continuum, is there a proper approach to determine the size of the REV in experiment? For the classical linear elastic continuum, one can measure the homogeneized stress and strain (or local averaged stress/strain)  and compute a homogeneized elastic constitutive tensor. However, I am not sure how to do it for non-local continuum, since the constitutive response is now sensititve to the gradient term. Any comment/suggestion is appreciated. 

Regards,

 WaiChing Sun

Hi Everyone,

I have a general question about dynamic strcture problem,

I read from some books that "spatial resolution of high-frequency modes typically is poor by using the conventional finite element spatial domain discretization"?

Could someone explain more on this? Does it because the element usually is not fine enough to capture the high frequency response or...?

Thanks a lot!

BR,

Li

Dear friends

I am modelling composite delamination using ABAQUS, i used 3D elementsin my model. my question is that how can i assign cohesive properties to a cohesive surface between to solids?

Should i treat the cohesive section like a continuum with thickness?

Is there any way exept the last one?

Is there any other aproach to  model delamination?which one is better?

Thanks.

Dear Colleagues:

We would like to invite you to submit an abstract for the 2010 ASME IMECE in Vancouver, to be held November 12-18, 2010.  Our minisymposium is on "Multiphysics Simulations and Experiments for Solids", and is the continuation of a very successful minisymposium held at the 2009 IMECE that resulted in more than 50 presentations.  This year's focus areas are:

Seven finalists and three honorable mentions have been announced for the Twenty-Second Annual Robert J. Melosh Competition for the Best Student Paper in Finite Element Analysis. The seven finalists and their current institutions are:

Marcial Gonzalez, Caltech

Ming-Chen Hsu, University of California San Diego

Alejandro Ortiz, University of California Davis

Jay Oswald, Northwestern University

Rashmi Raghu, Stanford University

Phanish Suryanarayana, Caltech

Hi all,

I am going simulate a plate of porous material (SiC) to evaluate its strengh.

Would someone share some knowledge on the mechanics of the porous materials.

Thanks.

 /Hao

POSTDOCTORAL RESEARCH SCIENTIST – Mechanics and Fracture of ice sheets