How to calculate the torque-speed caracteristique of a Synchronous permanent magnet Motor?

More Aissam Riad Meddour's questions See All

What to do to get better antimicrobial property of TiO2 nanoparticles?

I synthesized TiO2 nanoparticles in the green route and got the result of XRD. But I didn't get any antimicrobial properties from it against E. coli and S. aureus. Can you give me any suggestion...

28 November 2023 5,721 2 View

What will be a better dispersion medium for Titanium Dioxide (TiO2) powder (0.5% soluble in water and HCl)?

I want to synthesis TiO2 nanoparticles by using that solution. In the literature, I found that they used water. But I got a very low yield. What can I do? Any suggestion, please??

18 October 2023 2,755 5 View

How New Raster Create in Pyhton with Specific Row, Column and Projection?

I want to develop a hydrogeological model, therefore, I want to make a raster with specific row and column and it need to have a particular projection using python. So that, I can add different...

06 February 2023 9,091 3 View

How to display ode 45 solution at each time step ?

lets assume that i have an ode that i wanna solve using ode45 in matlab. My question is how can i tell ode45 to give me the solution at each time step ?

02 February 2023 2,006 3 View

Viscous drag term in Morison equation ?

Hello everyone, I was working on a floating cylinder. This cylinder is attached to the sea bed(for example) by a single mooring line. The cylinder is allowed to move only in x direction i.e he...

06 December 2022 3,732 0 View

S-N curve coefficients for concrete ?

Hello everyone, I am doing fatigue analysis. The material used is concrete. Does anyone have the coefficients of the equation (stress in function of number of cycles to failure i.e S-N curve...

08 November 2022 4,309 0 View

Is the isotherm linear plot of BET is normal or abnormal?

This material is a petroleum' s source rock , and the BET Correlation coefficient is : 0.9999310 and the T= 77K (-196.501°C) and the sample was well degassing over 21h. or I need to repeat the...

16 September 2021 6,358 1 View

In assessing stock market volatility, how do you interpret different ranges of the sum of the ARCH and GARCH Coefficients?

I'd really appreciate it if you could perhaps talk about how the topic relates to stock market efficiency and investment decisions.

13 September 2021 1,639 3 View

Is the XRF analysis method reliable when it comes to analyzing a plant powder (organic powder) ?

Im about to analyse a organic powder using the XRF analysis method (using the machine PANalytical xrf epsilon 3 ) . The powder is contaminated with heavy metals (Pb+Cd) . The powder is supposed...

27 May 2021 1,866 3 View

How to properly use Computationally Efficient FEA methods or surrogate models for optimization?

Hi RG Community, i was wondering if someone could suggest any good Thesis reports or articles about CE-FEA and surrogate models application on motor optimization (Permenent Magnets Motor),or at...

08 March 2021 4,203 1 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

An animal in not a rock (e.g., Koch 2013), it has an internal constitution that can be modified?

Vertebrates and invertebrates (e.g., arthropods: insects, crustaceans, etc.) have two different neuro-muscular systems given their differential construction: the former have an endoskeleton and...

07 August 2024 648 0 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Tangential stiffness option in ansys workbench?

I am not able to find how I can provide tangential stiffness in ansys workbench The normal stiffness option is there. But how I can enter tangential stiffness I have read somewhere tangential...

29 July 2024 2,032 2 View

Has anyone looked into the stability of FEM methods on curved meshed?

Google scholar isn't giving me any results on this

27 July 2024 595 2 View

How to Import Blade geometry from CAD file in ANSYS design modeler?

Hello. I have the geometry of a blade in CAD file (stp) and I want to prepare the blade for meshing with turboGrid. I must import this file into designModeler and then transfer to the...

27 July 2024 356 3 View

How can I decrease the error of Rietveld method for phase quantification?

Phase quantification in steel contain BCC and FCC

20 July 2024 8,150 7 View

Hello, does anyone know how I can get coordinates of two specific points on a moving body in Abaqus when applying a vdload subroutine?

Hello I am trying to simulate repulsive force of two permanent magnets in Abaqus. I have implemented Force equations into a vdload subroutine. sensitive parameters are the center to center...

15 July 2024 3,491 0 View

Can someone help with the instrument configuration in Profex using Rietveld Refinement?

I am trying to configure the instrument in Profex but I can't get a chi-squared value below 9.65 for LaB6. This is the configuration of the equipment, which is a Bruker D8 Advance with a Linxeye...

14 July 2024 4,767 1 View