Blog posts

jacobian matrix caculation

Submitted by afallah on Sun, 09/07/2014 - 11:38

Dear friends

Hi. I'm working on multiscale modeling of soft tissues. In my research I faced with a problem about computing the jacobian matrix in ABAQUS UMAT. In my model the material properties are function of external parameter like ef (ef is kind of strain and obtained from loading conditions) and relation between the "ef" and the strin in the model in unkown. Now, i want to calculate the jacubian matrix for this material, as you konw, the jacobian is defined as delta_sigma/delta_epsilon.

I have two question;

Research Position at the Institute of Applied Mechanics, TU Braunschweig

Submitted by Laura De Lorenzis on Sat, 09/06/2014 - 08:26

job

We offer a research position in the area of Computational Mechanics with a focus on isogeometric analysis and collocation methods applied to multiscale material modeling, beginning January 1st, 2015. The position is full-time fixed-term for 3 years.

Cohesive Zone modelling

Submitted by phanikumar376 on Fri, 09/05/2014 - 18:09

research

Dear all,

I am trying to study the fracture at bonded interfaces using cohesive zone model in Abaqus. I am going through the abaqus manual but it was not clear how to insert the chosive elements in the model. How to model these chosive elements. Can anyone help in modelling the chosive elements.

Postdoc (m/f) on fracture toughness of high performance composite materials

Submitted by clemens.dransf… on Fri, 09/05/2014 - 17:21

Your tasks: The main objective of this position is to improve the fracture toughness of high performance composite materials. You are expected to plan and implement manufacturing and processing experiments with carbon fibre thermoset prepregs and characterise their fracture properties. Furthermore, you will plan respective processing equipment and thoroughly investigate fracture mechanics of composites. This also includes the development of according numerical analyses and simulations.

A Ph.D. Position in Mechanics of Nano-composites at Michigan State University

Submitted by Anonymous (not verified) on Fri, 09/05/2014 - 15:22

job

phd

position

Michigan State University

Our Group of Appleid mechanics in Enviormental & Civil Engineering Department at Michigan State University has an openings for PhD positions to work on Mechanics of Nano-composites starting Spring 2015.

One research direction is modeling of nano reinforced materials, with combined theoretical and experimental efforts. Highly Stretchable/Flexible composites combines the leight weight of classical composites and mechanical properties of a polymer based composites, and thus do have a very broad biological applications. .