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Modifying Johnson Cook Model in ABAQUS simulations

I am currently simulating a high strain rate impact of commercially pure nickel and found a constitutive equation in DOI: 10.1051/jp4:2006134015. They have a modification of the Johnson Cook model to ...
Thian Daniel Iskandar's user avatar
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12 views

COMSOL multipysics - thermal stress for cubeSat in low earth orbit eigenvalue slover error

I'm using COMSOL version 6.2 for my simulation work. I'm dealing with Heat Transfer involving Radiation and Thermal Stress in solids phisics only after inserting all the constants and boundry ...
Abo Ayman's user avatar
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11 views

High-level sun sensor modelling for satellite

I am searching for some references on how to model at high level a sensor in terms of the statistical interpretation of the errors (bias, noise, ecc). Do someone have any reference (books or papers) ...
daniele__'s user avatar
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1 answer
28 views

Simulating falling and moving wooden house?

In Sweden, a newly constructed 150 m2 wooden residence built atop a mud foundation has exhibited significant structural instability. Over a period of 500 days, the house has settled by 90 millimeters ...
Léo Léopold Hertz 준영's user avatar
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Very slow Slew Rate after an 8V regulator

I have a requirement to provide a regulated 8V supply to power a FET. The regulated 8V is supplied from a DC bench power supply and needs to have a very slow slew rate to replicate someone turning the ...
TheSneakySquid's user avatar
1 vote
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69 views

Please see image and calculate for combined stress and deformation

This image is from an assignment I am struggling with this question. help would be much appreciated The cross section of the I-beams truss structure is 0.0031771m². The forces from left to right are, ...
Nas's user avatar
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How can I determine the best thicknesses of a circular plate to achieve minimum weight and high strength?

I want to design a circular plate made from iron ductile material, So I want to determine the best thicknesses of the profile (t1,t2,t3,...etc) as shown in the image tyo achieve the best plate weight ...
Ahmed Obaid's user avatar
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1 answer
61 views

Casting and the pressure of the metal

Background A gold casting process is explained here: The casting metal is melted in a special casting machine that is programmed to insert the metal under vacuum into the flask at the right time, ...
Megidd's user avatar
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Why cannot I use the 'view cut' function in Abaqus when I change the 'Countour Intervals'?

I'm doing a mechanical analysis with abaqus.I need to print the sectional stress diagram of the workpiece. In the beginning,I chose the 'Continuous' in 'Countour Intervals' and use the 'view cut' ...
jiajie hu's user avatar
-1 votes
1 answer
40 views

Adding traffic lights to a junction, what is the logic of using lights with arrows?

I'm doing a job and one of the feature is adding realistic traffic lights to junctions of a network and I have to be very specific. So, if on the ground there are arrows signaling the traffic flow (e....
Claudio Kerov's user avatar
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Define material from Ogden–Holzapfel two-fiber strain-energy function in Ansys

I'm trying to do a FSI simulation with properties, described in this paper and for the structural properties, the authors use an Ogden–Holzapfel two-fiber strain-energy function to describe the solid ...
Laura's user avatar
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Calculate heart valve flow rates over time. What formulas are involed?

I'm trying to program a simulation of a human heart which I want to produce results close to the following: (Source: https://en.wikipedia.org/wiki/Cardiac_cycle#/media/File:Wiggers_Diagram_2.svg) For ...
Arokh's user avatar
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0 answers
24 views

Searching for a Library of Simulink models of Fuel cells

I have a task at hand and in order to do that I must create a model library of Simulink/Simscape (or any other similar software) of models. Can I find such models in excess anywhere? The models must ...
Abdullah Yasin's user avatar
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1 answer
26 views

Minimizing heat transfer to the contents of a non-airtight pipe

Consider the following simple (half)pipe setup: The grey part is a galvanized-steel half-pipe. The green part consists of the ABS plastic non-airtight top lid and an internal layer of ABS plastic ...
Noideas's user avatar
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1 answer
168 views

Implementing convective boundary conditions for 1-dimensional finite difference computation of heat equation

I am simulating heat transfer through a 1-dimensional wall with convection on both sides. For the wall, I implemented a finite difference model like this: $$ u(x, t + ∆t) ≈ u(x, t) + c [u(x + ∆x, t) − ...
Dave's user avatar
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Genetic algorithm implementation for gas/power/water network operation optimizaiton

I have both practical and theoretical background in power, gas and water networks operation and I am familiar with the basics of genetic algorithm. I would like to dive into the network operation ...
artp9's user avatar
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Simulating the Impact of Bicycling on Hip Joint Cartilage

Sorry if this question comes off as obvious. I have more of a biology/clinical research background, and I have almost 0 experience with FEA. I have 50 sequential data points of the hip joint angles of ...
Omnitragedy's user avatar
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Which boundary condition to delimit air volume body to the atmospheric environment (ANSYS)

I simulate the air flow into a cooling tank due to the temperature or density differences with the environment. I have represented the environment as an air volume body and would like to select the ...
jotaro's user avatar
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0 answers
31 views

Clarification on the location of stress and strain output value in Abaqus

Today, I had a discussion with my teacher about the location of stress and strain output in Abaqus. I believe that Abaqus outputs stress and strain based on Gauss integration points. However, my ...
yuxuan's user avatar
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36 views

System identification of Blue Robotics Thruster with Simscape multibody

I have CAD design of a Blue Robotics Thruster 200. The thruster is imported to Simulink. From data given Blue Robotics Thruster 200 have MATLAB system identification toolbox been used to generate ...
Tor Erik Haavik's user avatar
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0 answers
19 views

CNC a hemisphere in SolidWorks

Dear all, I am currently learning CNC Milling software. I have successfully be able to simulate the toolpath for milling a square block to a hemisphere. May I ask how to add another operation, that is ...
Maximus Su's user avatar
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26 views

Seeking example problems solved using Automated Design Synthesis (ADS) algorithms

Premises. Gary N. Vanderplaats and coworkers at the Naval Postgraduate School in Monterey, California developed the Automated Design Synthesis (ADS) algorithms (software) that have been adapted to ...
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how to create a Ti V simulation cell with virtual cell approximation for density functional theory calculations

I would like to understand the method of creating simulation cells using the virtual cell approximation for different compositions of TiV using vasp
maheshwari meesa's user avatar
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0 answers
13 views

Different currents in the phases of a Multiphase Buck Converter

I am a student of electrical and computer engineering and am currently working on a project that involves the study of a Multiphase Buck Converter or Synchronous Buck Converter. Thus, in simulating ...
José Alves's user avatar
1 vote
0 answers
27 views

Simulation modelling of ATM machine

Today I built my First model with Anylogic simulation software on ATM simulation So ATM is basically here a delay element, which takes delay time parameter as triangular( 1.5, 2, 3.5 ). My idea is I ...
Rajakr's user avatar
  • 338
1 vote
1 answer
37 views

Simulating production of a product by a machine

I'm a beginner and trying to learn simulation modeling. My aims for simulation includes; A firm receives 5000 orders per week. 120 products are manufactured in an hour. The machine runs for 4 shifts ...
Satya's user avatar
  • 412
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2 answers
143 views

Required force to compress flexible elastic tubing with fluid inside at pressure P

How can one calculate the force needed to completely flatten a flexible plastic (PVC) tubing with an outer diameter of 4.1mm and an inner diameter of 3mm using a flat surface pressing down from above? ...
daniel17027's user avatar
2 votes
2 answers
126 views

Simulation modelling/ Digital twin of Injection molding process?

How can we make a digital twin of the Injection molding process in a production line? My idea is to do predictive maintenance and predict following downtime based on historical time series data of the ...
Satya's user avatar
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1 vote
2 answers
353 views

Clock pendulum period vs driving weight

I've got a weight-driven pendulum clock, I increased the driving weight by 10% and the period decreased by 1%. Why? What's the equation? The pendulum is length = 32cm; bob weight = 7g; rod weight = 7g....
Peter Balch's user avatar
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1 answer
35 views

Steep gradients spontaneously emerge during convection (discrete approximation)

I am learning fluid dynamics, and noticing an odd problem in my computations which I understand, but wouldn't expect, so I would like to know what I'm missing. I feel like it's something silly. At ...
kqr's user avatar
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1 vote
1 answer
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Running a Dynamic Model as Steady State with Time Varying Inputs

I am attempting to run a dynamic model of a waste heat recovery system (Brayton Cycle with intercooling) on IDAES but I keep getting errors on initilization seemingly no matter what I do. My work ...
Synchronicity's user avatar
1 vote
1 answer
84 views

Are there any advantages of using BEM for contact problem over FEM, apart from lesser computational cost?

FEM - Finite Element Method BEM - Boundary Element Method If we had access to "enough" computational resources (to discretize the entire volume domain in FEM to the same degree of fineness, ...
SNIreaPER's user avatar
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0 answers
172 views

What is the difference between activity and event in "simulation"?

I am studying about components of a system. The subject is "system simulation/simulation modeling/discrete event system simulation". This is related to electrical, electronics, computer ...
cahrooax's user avatar
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0 answers
73 views

How to calculate scaled speed

While working on a project I faced a difficult problem. Let's say I have car at a 1/10 scale. Now if a real car drives at 10 m/s, it would take 3 seconds to travel 30m. If we look at the scaled car ...
Mointy's user avatar
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1 answer
69 views

How to determine time taken for tyre to deflate using CFD analysis?

I am working on my final year project, and am at a point which requires us to deflate a tyre in 0.8 seconds. This needs to be simulated using CFD. We have drilled a hole into the rim and attached a ...
Sheraize Pillay's user avatar
3 votes
3 answers
4k views

Non-Linear Analysis Convergence Problem in Ansys

I am currently conducting a static structural analysis study in Ansys and encountered convergence prolems. I have a very large thermal gradient (almost 600°C) as input from a precedent transient ...
hansophyx's user avatar
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0 answers
28 views

Working of gearbox in driving simulators

I am a newbie in this field. Please help me in gaining a bit initial fundamental knowledge in simple language. How are gearbox ratios interpreted in driving simulators? Are the gearboxes used in ...
Robin's user avatar
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0 answers
34 views

I'm trying to understand an equation from a motor simulation $\dot w_i (u_ i ​ ,w_i,l _i ​ , \dot l _ i ​ )$

I have a simulated motor and I'm not understanding the math to control it. This is the equation for the force of the motor, also called an 'actuator'. $\dot w_i (u_ i ​ ,w_i,l _i ​ , \dot l _ i ​ )$ w ...
Renoldus's user avatar
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2 answers
394 views

Modeling a second order system in time and frequency domain

For school I was asked to model the transfer function $H(s)=\frac{3}{(s+4)(s+5)}$ in both the time and frequency domains using initial conditions $y(0)=2,y'(0)=3$, a step input, and Simulink. I would ...
Red's user avatar
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0 votes
1 answer
292 views

What is meant by Solid Mesh and Surface Mesh? [closed]

Solid Mesh vs Surface Mesh, which method should I choose in simulation studies. What is the geometry behind these meshes. Which mesh gives accurate results?
Ibrahim Omer's user avatar
0 votes
1 answer
93 views

Isn't the Newton's cooling law for heat convection too macroscopic for CFD simulations?

In CFD (Computational Fluid Dynamics) simulations, the space is discretised into a huge number of tiny cells and, therefore, one has the opportunity to use a model of heat transfer that takes into ...
Élio Pereira's user avatar
0 votes
1 answer
76 views

Stress/impact simulation of a solidworks design

I am creating a waterproof box that will be submerged under a few feet of soil and also must be able to withstand the impact if dropped from a height. I am wondering if it is possible on solidworks, ...
CADman's user avatar
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0 votes
1 answer
137 views

Modeling the Internal Forces Exerted on a Catapult Arm while Throwing

I am currently creating a MATLAB script to determine the internal forces present in a uniform beam as it is accelerated by a torsional spring. I was able to derive the equation for the axial force ...
DrCobras28's user avatar
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1 answer
382 views

G code simulation in NC Viewer for Manufacturing Engineering

I am trying to simulate the following code in NC Viewer (https://ncviewer.com/). O001 N10 G20 G90 N20 M06 T1 N30 M03 S500 N40 M08 N50 G01 X0.25 Y0.25 Z0.25 N60 G00 Z-0.25 F2 N70 G01 X0.4 Y1.75 N80 ...
user402525's user avatar
0 votes
1 answer
300 views

VPython Simulation of Coupled Oscillators Not Displaying Normal Modes Properly

The VPython code found at the following link https://glowscript.org/#/user/cody825/folder/Lab8/program/CoupledMassSpringSystemCopy/edit Aims to simulate a 6-mass, 7-spring coupled oscillator system. ...
Cody Payne's user avatar
0 votes
1 answer
284 views

Mesh part failed in solidworks issue

This assembly is extremely hard to mesh. Even, if I used an extremely finer mesh and took a long time to solve, it still keep failing. This model can be found at https://drive.google.com/file/d/...
Maximus Su's user avatar
1 vote
1 answer
72 views

Modeling a simple capacitor

Hey guys I am trying to model the performance of a hypothetical capacitor. Capacitance depends on its geometry, but the charging and discharging of the capacitor depend on a resistive load within the ...
RMS's user avatar
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1 vote
0 answers
199 views

How to export 'simplified' geometry from Simulation workspace in Fusion 360 to ANSYS Mechanical?

I would like to export the defeatured version of my design to ANSYS. I tried adopting the following methods but they weren't working out. (https://forums.autodesk.com/t5/fusion-360-design-validate/...
Sharath Chandar's user avatar
1 vote
0 answers
48 views

Solidworks flow simulation temperature drop

Using Soldiworks flow simulation, I want to calculate the temperature drop of water (40 degrees) which flows in 10 m steel pipe. How should I manage Wizards setting and goal?
Robin's user avatar
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2 votes
1 answer
66 views

CFD simulation of an Air and Oxygen gas gradient in a microfluidics device

I am in the process of manufacturing a microfluidic device for use in research, and would like to do a CFD simulation of the interior of the device to see if an oxygen gradient is formed. The idea is ...
mangoTango's user avatar