research

I am doing microstructure analysis in 3D. To implement anisotropy, i need to give the orientation data. Does anyone know, how to give the orientation in ABAQUS?

The data i have in hand is Euler Angles... Can i give the data manually for four of five grains?

Also, please tell me about the ORIENT subroutine in ABAQUS...

Charge localization instability in a highly deformable dielectric elastomer

Submitted by tongqing.lu on Fri, 01/24/2014 - 07:21

research

electromechanical instability

dielectric elastomer

localization

A highly deformable capacitor made of a soft dielectric and two conformal

electrodes can switch between two states discontinuously, by a first-order transition, as the total

charge varies gradually. When the total charge is small, it spreads evenly over the area of the

capacitor, and the capacitor deforms homogeneously. When the total charge is large, it localizes in

a small region of the capacitor, and this region thins down preferentially. The capacitor will

Why am I getting a messy signal FFT instead of a smooth one?

Submitted by r_1159 on Thu, 01/23/2014 - 08:21

research

Hi

I am doing wave simulation on plates with various damages. Guided sinusoidal waves are generated and scattered throughout the plate. To compare the results I am getting FFt of displacement (frequency domain). The one without damage gives me a very smooth FFT while the ones with damage give me a messy FFT ( Please see the attached photo). Is it something to do with filtering or is any thing wrong with my results ?

Damages model

http://oi42.tinypic.com/zo6ty9.jpg

Undamaged model