Usually, the position of points in Mohr's circle is attributed to a sign convetion related to shear stresses. It is shown that points in the circle related to shear stresses generating a clockwise moment are in the upper half of the circle as a consequence of the position of principal directions, not due to a convention. I hope this note could help to explain better the use of Mohr's circle in plane stress states.

Dear all,

 On Thursday 28th and Friday 29th of October 2010, we will organise a course on using the CONTACT software at Delft University of Technology in the Netherlands.

The aims of the course are:

 Data Storage Institute in Singapore (www.dsi.a-star.edu.sg) has an immediate opening for a Post Doctoral Fellow in Tribology of Magnetic Data Storage System. The PDF will be involved in the research and development of advanced overcoats and lubricants for future magnetic data storage systems. A PhD degree in Mechanical/Chemical Engineering, Materials Science & Engineering, Physics/Chemistry is essential for this position. Good testing skills and strong research experience are desirable.

Hi all ... Is there a way to find/calibrate material parameters for johnson and cook material model using experimental data in Abaqus? .. As far as i know abaqus has something called as data editor with which Hyperelastic materials models can be calibrated with experimental results. If not is there any other way arround to do calibration of material parameter with abaqus.

hi all,

How to decide the geometric nonlinearity?.

i.e If i consider a sturcutre for example-fishing rod or wind turbine blade, how to decide that the structure is geometrically nonlinear.

Does it requires lots of calculations or by experimentation... For example by just observing the structure, is it possible to decide?

What are the reasons to consider the geometric nonliearities.

Regards

sagar