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What are the differences in the energy consumption processes near the tip of a crack in plain concrete, fibre reinforced concret

Submitted by Fatigue on
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What are the differences in the energy consumption processes near the tip of a crack in plain concrete, fibre reinforced concrete and metals?

Open hole shear strength test method

Submitted by syn1003 on

Hello

I am wondering test method about open hole specimen to acquire shear strength.

The specimen is made of composite and we tried to make fixture from ASTM D5379.

However the failure mode is not acceptable and I am thinking about new test method for

open hole specimen.

Let me know any idea to approach other test method to acquire open hole shear strength value.

Thanks

C.J. Syn

Inverse eigenstrain analysis based on residual strains in the case of small strain geometric nonlinearity

Submitted by Sébastien Turcaud on

Hi,

I was wondering if someone knows literature related to "Inverse eigenstrain analysis based on residual strains in the case of small strain geometric nonlinearity"? (elongated bodies)

In the case of lineralized elasticity I guess one could postulate an eigenstrain distribution as the sum of a finite set of basic eigenstrain distribution and minimize the difference between the predicted and the actual residual strain distribution (retrieved from a synchroton mapping for example).

As done in the paper:

Python scripting

Submitted by villa7 on

Hello

I am reading an abaqus odb which is solved for 2 time steps 'step1' and 'step2' and i want to read  the output at every last frame of these steps.  further, I have written python script to find change in dispacement. I have written this code which works fine to capture delta displacement

Turning a shaft through conact pressure in ABAQUS/standard?

Submitted by hmpws on
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Hello all,

This is my first post here. This seems be an informative and helpful forum.

I am trying to model the rotation of a "hard" shaft as a result of motion of 2 strips of soft materials (please see attached figure).

The strips are deformed due to external forces and as a result, contact pressures are applied on the shaft. The forces are then varied on the strips leading to net rotational forces on the shaft.

Mechanics dictates embryonic stem cell pluripotency

Submitted by Ning Wang on

We demonstrate that a soft substrate of a stiffness that matches the embryonic stem cell stiffness can promote homogenous self-renewal and pluripotency of these cells, even in the absence of the growth factor-Leukemia Inhibitory Factor (LIF). These findings open the field of stem cell biology for long term culture of embryonic stem cells without generating a heterogeneous population of cells with varying degrees of differentiation and highlight the importance of mechanics in dictating embryonic stem cell pluripotency.

Nanoscale Polymer Mechanics - Postdoctoral Position, Trinity College Dublin

Submitted by grahamcross on


Postdoctoral Fellowship at the CRANN Nanotechnology Institute, Dublin, Ireland

- Available immediately:  A postdoctoral position in the area of nanoscale polymer mechanics for mechanical nanostructure forming and nanoimprint of soft condensed matter and glass forming systems.