What kind of parameteric function can generate this kind of flat "spiral" curve?

Hello everyone, I am thinking how the function should look like in order to generate this kind of curve shown below. I am guessing the variables should be : the radius that increases by "x"...

08 September 2019 5,328 3 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...

08 September 2018 4,831 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...

07 August 2018 3,114 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...

06 July 2018 1,202 2 View

Does it make sense to compare a solid model and a beam model, both simply-supported, single load?

I mean to ask, is it right to say that a solid element behaves exactly like a beam element, given the same cross section, simply supported boundary conditions etc? I am talkingin terms of...

05 June 2018 2,266 0 View

How to assign cylindrical coordinates for such a model in Abaqus?

Hello everyone, I have a cylindrical (non-uniform) model as shown in in the figure. I would like to assign the orientation such that : Z-axis = normal to the surface X-axis = along the radial...

05 June 2018 2,586 3 View

What kind of contact definition can I implement for this model?

Hello Abaqus users, I am looking for the best way to model a yarn-knitted reinforced rubber hose in Abaqus, in order to measure the expansion and burst pressure. I have modeled the 3D geometry...

05 June 2018 3,880 0 View

How to induce contact inside an RVE (Representative Volume Element)?

Hello everyone, Does anyone have any experience/insight on RVEs where the fibers interlock, thus causing some contact to occur between the fibers of the matrix? Please do let me know whatever...

05 June 2018 4,744 2 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...

05 June 2018 950 3 View

Can anyone provide me some USDFLD subroutine examples?

I have searched on google and in the abaqus manual, but there is very little information on this topic. I would love to see some example subroutines.

05 June 2018 3,998 17 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View