Colour and solubility of poly(ethylene adipate) and poly(butylene adipate)?

I would like to know the colour of these two aliphatic polyesters. Also, I am curious to know their solubility in common organic solvents? Are these materials soft solid for feel? Can be they made...

16 August 2020 4,169 2 View

Trapped water inside reduced graphene oxide at room temperature, will this affect the electrochemical performance of suprcapacitor?

How trapped water inside the RGO sheets helps to enhance the specific capacitance of energy storage material?

02 January 2019 7,308 4 View

What is the difference between Min (in-plane) Principal Stress and Min Principal stress in SHELL elements Abaqus?

Hello everyone, In Abaqus, my model uses shell elements. After the simulation when I try to compare the principal stresses, there are 4 possibilities : 1. Max In-plane Principal 2. Max...

13 September 2018 3,698 3 View

When to use Hyperelastic material in Abaqus?

Hello everyone, In my model (predominantly rubber), I get a maximum strain of around 15% compared to the initial state. I have experimental data for the rubber compound I am using, and I want to...

13 August 2018 565 3 View

Abaqus : How to view beam section forces in tangential (beam) direction?

Hello everyone, I would like to know how to view the beam section forces in the axial direction of the beam. I have selected SF in the output field variables, and am not sure if SF1 means axial...

29 July 2018 7,200 3 View

What material model is usually preferred for rubber in Abaqus?

Between and Elastic-Isotropic model with a low young's modulus, and a Hyperelastic Material that fits best with experimental data, what model (overall) gives relatively good results with less...

01 June 2018 6,494 3 View

How to define the anisotropic behaviour of a SOLID material in Abaqus?

Hello Everyone, I have the effective properties of a material (E1, E2.. v12, etc) as a function of the strain (epsilon11, epsilon22, epsilon12) as shown in the figure. I want to apply these...

30 May 2018 6,188 2 View

How do I model contact between beam elements?

Hello, I am modeling a yarn-knitted reinforced rubber hose in Abaqus, in order to measure the expansion and burst pressure. As seen in my model, I have used BEAM section for the aramid cords,...

24 May 2018 4,311 1 View

Can the RVE be homogenized in a NLGEOM step in Abaqus?

Hey guys, I have a RVE (representative volume element) where the matrix is rubber (highly nonlinear). I want to run my analysis with the NLGEOM option ON. What I want to understand is, after...

12 May 2018 5,811 2 View

What is the advantage of beam elements vs solid elements in this particular application?

Hello everyone, I plan to model a knitted reinforcement within a rubber hose in Abaqus in order to analyse the various stresses sustained by them during hose expansion. I am wondering whether to...

08 May 2018 227 8 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What is the difference between genotype and haplotype data in the ped format?

Hi everybody In the ped format for genotype, alleles of any SNP are represented by two columns (one for each allele, separated by a space). Is a column sufficient for the haplotype to...

27 February 2021 1,965 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View

How do I choose contrasts in SPM8?

I am learning how to use SPM for PET and PET-MR analysis, but I haven't found any great resources that explain how contrasts work. I have a series of PET images where our hypothesis argues that...

24 February 2021 1,534 2 View