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regarding Microstructure analysis in ABAQUS

Submitted by deepumaj on

Hi all,

 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

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

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

modelling and analysing the laminated composite using ansys

Submitted by S.NARAYANAN on
Choose a channel featured in the header of iMechanica

I want to do research work in analysing composite using the ansys or similar software.I want to get the details regarding modelling the laminated composites.

And also details regarding  analsing the properties of composite for cyclic load,fatique load,and torsion.

which ansys version is suitable

 

 

Dynamic Brittle Fracture as a Small Horizon Limit of Peridynamics

Submitted by Robert Lipton on

Overview: The peridynamic formulation is a
spatially nonlocal derivative free model for simulating problems of free crack
propagation.Material points interact through short-range forces and the
formulation allows for discontinuous deformations. Here the short-range forces
are initially elastic and soften beyond a critical relative displacement. We
upscale this peridynamic model to find the macroscopic (a.k.a. small horizon)
limit. It is shown that the limiting macroscopic evolution has bounded energy
given by the bulk and surface energies of brittle fracture mechanics. The
macroscopic evolution corresponds to the simultaneous evolution
of the fracture surface and linear elastic displacement away from the crack