How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View

How to display displacement time history in table (SAP2000) ?

Hi, I want to export displacement time history to Excel. In SAP2000 they just give me the graph dirctly, I want the initial data Thanks Rakan

18 March 2019 8,004 1 View

How can I scale ground motion on SAP2000 (0.2g for example) ?

I just uploaded the time history file on SAP2000, and I want to scale the motion to 0.17, 0.2, 0.22 How can I do this please?

31 January 2019 1,650 7 View

How do you integrate the 'friction' variable Xi in the Nose - Hoover Thermostat in order to apply it to a molecular dynamics simulation?

Everything tells you the derivative of Xi, but not how integrate the value to implement it into a simulation. How do you do this?

21 February 2021 6,481 1 View

How to implement boundary conditions in Abaqus contact problems?

Hello I am trying to simulate crawling motion of a bilayer beam using Abaqus. Kind of similar to this: https://youtu.be/os-Z3ucoFpA I am using multiphysics enabled (diffusion, deformation,...

20 February 2021 2,916 1 View

Why are we measuring gel content of NBR latex? Does gel content related to the amount of cross-linked in a polymer?

Hi good day to everyone! I am actually studying the gel content of synthetic latex. Refer to ASTM 3616, gel content is measure of insoluble rubbers in the chosen solvent. So, I just would like to...

07 February 2021 605 4 View

Can anyone help me with the problem of hyperelastic coefficients in abaqus?

Hello Everyone, I have done a uniaxial test on rubber and data (attached with the post) has been used in Abaqus to get YEOH's coefficient. But I am getting a warning that it is unstable? Can...

04 February 2021 5,975 3 View

When to use Darcy or Fanning friction factor in frictional pressure drop measurement?

04 February 2021 6,174 3 View

Anybody to help me with Code source for DOUBLE CONCAVE FRICTION PENDULUM BEARINGS Please?

Hello, would you please share the codes for Base Isolation of structures using Double Concave Friction Pendulum Bearings? I am doing a related research but as I am just a beginner in MATLAB, I...

18 January 2021 6,683 1 View

Can you please help with the problem modeling a damper in ABAQUS?

Hello everyone, I am trying to model a damper in ABAQUS. I have obtained hyperelastic properties using a uniaxial tensile test and viscoelastic properties by relaxation test conducted in the...

09 January 2021 4,515 1 View

How to convert Time Domain DMA data to prony series?

Hello Everyone, I have Time Domain DMA data of rubber i.e. loss modulus and storage modulus varying with time with constant 1 hz frequency. I need to convert it into prony coefficient. I need to...

09 December 2020 5,211 3 View

FEM modeling of Joints/ Connection?

The attached Joint.png showed and example case of a joint (2 continuum members are connected). There are 3 characteristics of this, 1. There is a Gap: Cause small amount of rigid body rotation and...

07 December 2020 6,603 3 View

How do you prevent discolouration(yellow) in white rubber compounds?

The correct combination of ingredients must be used in rubber formulation. Is there another means to prevent discolouration other than reformulating compounds?

03 December 2020 8,960 3 View