Blog posts

On Tensegrity in Cell Mechanics

Submitted by Konstantin Volokh on Wed, 09/14/2011 - 20:41

All models are wrong, but some are useful. This famous saying mirrors the situation in cell mechanics as well. It looks like no particular model of the cell deformability can be unconditionally preferred over others and different models reveal different aspects of the mechanical behavior of living cells. The purpose of the present work is to discuss the so-called tensegrity models of the cell cytoskeleton. It seems that the role of the cytoskeleton in the overall mechanical response of the cell was not appreciated until Donald Ingber put a strong emphasis on it.

Materialise & Simulia Medical Engineering Seminar

Submitted by Mimics on Wed, 09/14/2011 - 12:32

conference

biomechanics

finite element analysis

seminar

Materialise

event

finite element modelling

patient-specific

SIMULIA

meeting

Materialise and Dassault Systemes Simulia Benelux are pleased to announce their co-organized Medical Engineering Seminar which will take place on 4 October 2011, at the Materialise HQ in Leuven, Belgium. The Medical Engineering Seminar is a meeting for and by users and aims to bring together biomechanical engineers currently working, or interested in patient-realistic finite element modeling.

Viscoelasticity

Submitted by bipiniitd18 on Wed, 09/14/2011 - 06:16

research

viscoelasticity

hi,

I have to do stress relaxation of fabric under stress condition. For this I have assumed my fabric as orthotropic material.

I need to find a stress relaxation on fabric under stress condition. Can anyone suggest the procedure to solve this analysis in

ANSYS.

Thanks

BIPIn

PhD student recruit (Composite materials, Korea)

Submitted by mekchu on Wed, 09/14/2011 - 02:52

education

FEM

composite

It is pleasure to announce that there is an
opening for students who want to join a PhD course or combined master + PhD
course (Going to directly Ph.D. course without master thesis after B.S.) in
Department of Aerospace Engineering, GyeongsangNational University, South
Korea.

The successful candidate will do research
under the advise of Prof. Jin-Hwe Kweon in Structures and Composites Lab. Research areas include testing and finite element analysis of:

1. Composite Cylinder under hydrostatic
pressure,

draw mode shape with matlab

Submitted by hrbeu221 on Tue, 09/13/2011 - 20:04

research

if M is your mass matrix and K is the stiffness matrix, use

[phi w2]=eig(K,M);

phi contains the eigenvectors (each column is a modeshape)

w2 is a diagonal matrix, each diagonal entry contains wn(i)^2

(i.e. the i'th natural frequency squared).

Then how to draw the mode shape with eigenvectors?

Thank you.

Overclosure and distortion

Submitted by vileez1 on Tue, 09/13/2011 - 16:02

Overclosure and distortion problem

hi

I am doing a structural analysis in Abaqus

A pipe with side walls

Loadings are : Internal pressure , concentrated force on the wall and bending moment

The problem has to be solved such that the cylinder slides on the side walls.

with internal pressure it works but when i bring the side force or moment there is an error massage of overclosure...

I am not understanding what is it.

?

can any body help me.......

Delamination using cohesive interaction

Submitted by abhishekaran on Mon, 09/12/2011 - 17:07

software

Hello,

Im trying to simlate delamination in abaqus and after going through the documentation i decided to go for the cohesive element approac. In the documentation it is mentioned that we use a general contact(explicit) for the interation but when i do that i am unable to use general, static step. So which step do i go for if i i want to simulate a static delamination ?

Define crack when using cohesive surfaces in abaqus

Submitted by abhishekaran on Mon, 09/12/2011 - 15:38

software

Hello,

Im trying to model Delamination in abaqus using cohesive surfaces. I did the following :

-created a cohesive intertaction property, defined damage initialisation and evolution in this and then used general contact between 2 surface and used the interaction property for it.

-For the initial crack i left a certain region unbounded and used a double cantilever model.

Load control problem for axisymmetric analyis of tires

Submitted by pradeep632 on Mon, 09/12/2011 - 15:33

education

Hello,

PDF and PhD Positions at Simon Fraser University

Submitted by Nimal Rajapakse on Sun, 09/11/2011 - 20:09

research

I am looking for a post-doctoral fellow and two PhD students. The research projects are concerned with electromechanical performance of PZT actuators in hydrogen-based fuel injectors (PDF), modeling of fuel cell membrane durability (one PhD) and nanoscale mechanics (one PhD). Interested applicants are asked to send their CV and transcripts to: Dr. Nimal Rajapakse, Dean, Faculty of Applied Sciences, Simon Fraser University, Burnaby, Canada.

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