Blog posts

I would like to know if there are any element in abaqus which may be used at the contact interface to account the frictionalal behaviour. I would appreciate if you show light on this.

Thanks and Regards

Balaa

Study on electroelastic field concentration around the electrode tip in multilayer ferroelectric actuators

Submitted by Xujun Zhao on Sat, 09/11/2010 - 15:20

research

Finite Element Method

Optimization

Piezoelectric/ferroelectric actuator

Electrode

Electromechanical concentration

Distribution of electromechanical field near electrode tips is closely related to the reliability of ferroelectric multilayer actuators. In this paper, the deformation and stress concentrations around the electrode tip in two multilayer actuator designs, partially and fully cofired, are investigated by means of experimental measurement and numerical simulations. The digital speckle correlation method (DSCM) is used to measure the full displacement field near the electrode tip with the high spatial resolution.

How to apply a pressure and a traction to a integration point by using VDLOAD

Submitted by hale on Sat, 09/11/2010 - 13:16

My aim is to apply a prescribed pressure and traction to a surface.But in the VDLOAD only the array Value(*) can be written, besides the value is one dimension array.

Then my questions are that how to apply a prescribed pressure to a integration point in the direction which is normal to the surface and how to apply a prescribed traction to a integration point in the dierection which is tangential to the surface.

Thank you very very much!

Dr Liu

Domain decomposition-based structural condensation of large protein structures for understanding their conformational dynamics

Submitted by Kilho Eom on Sat, 09/11/2010 - 08:27

research

normal mode analysis

elastic network model

coarse-grained model

large protein structure

conformational dynamics

Abstract

Membrane interactions control residues fluctuations of outer membrane porins

Submitted by Azim B Besya on Fri, 09/10/2010 - 19:03

research

Bacterial outer membrane porins (Omp) that have robust ß-barrel structures, show potential ap-

plications for nanomedicine devices in synthetic membranes and single molecule detection biosensors.

Here, we explore the conformational dynamics of a set of 22 outer membrane porins, classified into

five major groups: general porins, specific porins, transport Omps, poreless Omps and composed

pores. Normal mode analysis, based on mechanical vibration theory and elastic network model, is