Blog posts

how is the stress-strain field near the crack tip under cyclic loading?

Submitted by Chen Long on Sat, 04/16/2011 - 01:28

hi!

i am interested in the fatigue crack growth of a cracked body.Recently,i am stucked by a problem of how is the stree-strain relationship near the crack tip under cyclic loading.As we know,the HRR field near a crack tip under monotanic loading is well solved.So,i doublt that if the type of the HRR formulation can still be used under cyclic loading.If not,why?And how to solve this problem?if there is any suggestions or references ,i would be appreciated!

Pavement Model

Submitted by fazel.pars on Fri, 04/15/2011 - 17:03

Hi everybody...

I'm a M.S Student. For my thesis named as " Flexible Pavement Analysis with Abaqus" I need to Model a 3-Layers Pavement with abaqus. But I have some problems, like my outputs don't have balance with real output and ...

For this I searched a lot for a sample or example like my thesis subject to found my wrong assumptions, but I haven't found it yet. Do you know where can I find this samples???

Temperature vs. chemical potential

Submitted by Zhigang Suo on Fri, 04/15/2011 - 15:31

education

thermodynamics

For the third time I am teaching the graduate course on soft active materials. This course is called Advanced Elasticity in the Catalog of Courses. In the last several years, I have dropped several traditional topics, and focused on thermodynamics and finite deformation. I have added several topics where both thermodynamics and finite deformation play significant roles, such as elastomeric gels and dielectric elastomers.

Fliiping nodes normal directions for a solid section

Submitted by Tima on Fri, 04/15/2011 - 10:03

research

Fliiping nodes normal directions for a solid section

Does Anyhone have any idea about fliping the normal directions for a solid sections to be pointed in not out, because am having an error: nodes have incorrect normal definitions.

Mechanical response and texture evolution in magnesium alloy

Submitted by Amit Pandey on Fri, 04/15/2011 - 01:59

research

magnesium alloys

Textures

Abstract

Evoution of Yield surfaces: Past and Future Trend - Simulation

Submitted by Amit Pandey on Fri, 04/15/2011 - 01:54

In continuation of our work on yield surfaces

Part- 1 (node/9016)

Part- 2 (node/9073) and

Part- 3 (node/9103)

Cyclical Nanoindentation Stress-Strain Measurement

Submitted by NANOVEA on Thu, 04/14/2011 - 20:49

industry

stress-strain

nanoindentation

The Stress-Strain curve obtained by Nanoindentation reveals the correlation of "Stress" and"Strain" of a given material under nano controlled loads. Unlike the traditional Tensile Testing method of obtaining Stress-Strain curve data, which gives data at a macro level, the Nanoindentation method provides vital Stress-Strain curve data at nano level scale without the large and intense machinery. The Stress-Strain curve of various materials will vary widely.

Analysis Buckling

Submitted by wahyoe on Thu, 04/14/2011 - 20:41

Can you help me, I have trouble solving buckling analysis, can you help me to provide references / examples of solving buckling analysis steps on a space truss structure.

thanks

Wahyoe