Blog posts

To the best of my knowledge, the two momentum conservation principles, namely, the conservation of linear- and angular-momentum, operate completely independent of each other. For an isolated object, there is no possibility of conversion of one form of momentum to the other.

On friday we had a wonderful trip to Modena, at the University of Modena's Millechili
Lab with which I collaborate also for the MilleChili journal Millechili Journal -- weight reduction in vehicle design.
In collaboration with Ferrari SpA project.

The autovibrations of the bridge over Volga river in the city of Volgograd(Russia) were filmed (not by me) today on 05/21/2010. The amplitude reachedabout 1 m. The bridge opening was just six months ago...

Apparently, either the bridge frame drag was too high or torsional stiffness / damping too low.

 The Centre for Metallurgical Process Engineering at the University of British Columbia (UBC) is recruiting qualified applicants for the position of Postdoctoral Fellow. This is a unique position in industrially oriented research on heat transfer studies during run-out table cooling of advanced high strength steels. In detail, the work will involve the development of a run-out table cooling model based on analyzing results obtained from heat transfer studies using the unique pilot scale run-out table located in the Advanced Materials and Process Engineering Laboratory (AMPEL) in UBC.

 Hello,

 I have the following problem:

I want to implement a hyperelastic material model with a damage function (like the pseudo-elasticity of Ogden) by using a UMAT in Abaqus/Standard.

For this, in the first step I try to implement the damage of Ogden, which already exist in Abaqus/Standard.

But I don't know in which way I build the tangent stiffness matrix for this case (nonlinear and dependent of the history)

Do anywhere know a good literature in order to read and understand this issue?