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Link Ansys with Matlab

Submitted by sara.b on
research

I want to do optimisation in Matlab by linking it to Ansys.

I need to get my graph from Ansys in each itteration and import the graph in Matlab in order to compare with experimental results and get new coefficients. These coefficients again needs to import in Ansys file.

 

I could manage to do it with smaller size file (with less degree of freedom), but when it comes to complicated geometry with more nodes and elements number, I got liscence problem. It looks like there is a limitation in running when you call Ansys from Matlab.

 

Sensitive and stable strain sensors based on the wavy structured electrodes

Submitted by mortezaamjadi on
research

Herein, we develop capacitive type strain sensors composed of the CNTs-PDMS nanocomposite thin films as electrodes and PDMS dielectric layer. The strain sensing performances of the strain sensors made of the flat and wavy structured electrodes are compared. Both types of strain sensors can measure strains up to 100%. We found that wavy structured based strain sensors possess higher sensitivity with quite stable and reliable responses due to the resistance stability and very low resistance standard deviation of the wavy structured electrodes.

Ag@Ni Core–Shell Nanowire Network for Robust Transparent Electrodes Against Oxidation and Sulfurization

Submitted by mortezaamjadi on
research
Transparent electrodes;core–shell nanostructure;electrodeposition;anti-oxidation;anti-sulfurization

Silver nanowire (Ag NW) based transparent electrodes are inherently unstable to moist and chemically reactive environment. A remarkable stability improvement of the Ag NW network film against oxidizing and sulfurizing environment by local electrodeposition of Ni along Ag NWs is reported. The optical transmittance and electrical resistance of the Ni deposited Ag NW network film can be easily controlled by adjusting the morphology and thickness of the Ni shell layer.

Highly Stretchable and Sensitive Strain Sensor Based on Silver Nanowire–Elastomer Nanocomposite

Submitted by mortezaamjadi on
research
strain sensor; flexible sensor; stretchable sensor; silver nanowire; nanocomposite; piezoresistivity; human motion detection

The demand for flexible and wearable electronic devices is increasing due to their facile interaction with human body. Flexible, stretchable and wearable sensors can be easily mounted on clothing or directly attached onto the body. Especially, highly stretchable and sensitive strain sensors are needed for the human motion detection. Here, we report highly flexible, stretchable and sensitive strain sensors based on the nanocomposite of silver nanowire (AgNW) network and PDMS elastomer in the form of the sandwich structure (i.e., AgNW thin film embedded between two layers of PDMS).

ansys *do

Submitted by zhouchen on
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*DO,i,2,5,1

/SOLU

ANTYPE,,REST,,,0

w=i*(-8.01e-5)

DK,200, , w , ,0,UY, , , , , ,

DK,201, , w , ,0,UY, , , , , , 

SOLVE

FINISH

*ENDDO

This is a do loop in ansys apdl. I expect w to change every loop. However output window says i is an unknow parameter. Does anybody know what the problem is? 

Measuring damage variables from load-unload test (damage mechanics)

Submitted by dithoap on
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damage mechanics
measurement of evolution of damage variable

Hi All,

I want to use ductile damage model in ABAQUS to model the damage of thermoplastic polymers, in which I need to input the damage evolution law (\dot{d}).

My question is on the way we have to measure the variable d.

Suppose I have 10 cycles of load-unload test. For slope of the first load will be initial Young's modulus at undamaged state E_0. now for the next cycle, which part of the curve we need to measure their slope to get the damage variable (d = 1 - E/E_0).

Median Review Time of all ASME Journals

Submitted by Yonggang Huang on
research

I attended an ASME meeting during which the Managing Director of ASME Publishing reported on the ASME publications. 

 

Please find two of his slides related to the ASME journals, in which he singled out JAM for its rapid publication.  The first slide is the median review time (from submission to editor’s final decision) in 2014 for all 27 ASME journals, for which JAM is the fastest -- 2 months (in 2014).  The second slide gives the median review time from 2010 to 2015 for JAM, and the newest data point is 1.2 months for 2015. 

Temperature induced crack propagation in structured media

Submitted by Giorgio Carta on
research
thermal striping
thermal shock
fracture
crack propagation
elastic lattice
microstructure
Nonlinear problem

This paper describes the propagation of an edge crack in a semi-infi nite triangular lattice, consisting of identical point masses connected by thermoelastic links. A change of temperature, represented by a time-periodic series of high-gradient temperature pulses, is applied at the boundary of the lattice. In order to make the initial crack advance in the lattice a failure criterion is imposed, whereby the links break as soon as they attain a prescribed elongation.

Create simple ODB without submitting a job

Submitted by ajkrell@yahoo.com on
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Abaqus python script

Hello. 

I'm looking to create a simple ODB file using my model in session so that I can display an orientation tensor in a custom field.  I'm able to create an ODB for a 2d part (made of s4 elements), but my system crashes whenever I load the ODB for my 3d part (made of c3d8 elements).

Here is my script. Any help would be greatly appreciated!

 

from abaqusConstants import * 

from odbAccess import *

from textRepr import *

odb = Odb(name='4',

    analysisTitle='derived data',

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