software

For some educational purposes, I need a 2D Dislocation Dynamics Matlab Code. How can I find it?

TURBOdesign Suite is a unique aerodynamic and hydrodynamic 3D design software package that allows users to design, analyze and optimize all types of turbomachinery, such as axial, mixed-flow, or centrifugal pumps, compressors, fans, turbines and torque converters.

Dear Mechanicians,

ABAQUS has a number of little-known built-in material models that are not documented in the manuals.

They are accessible from https://www.3ds.com, follow the path "Support", "Knowledge Base" and search for "Built-in user material models for Abaqus/Standard and Abaqus/Explicit". Below is a text version of the output.

It may be that you need special rights on the site; these can be requested from your regional SIMULIA HQ.

For test reasons of abaqus work, I have defined my material properties (stress-strain behaviour) up to strains of 15! However, even in this condition some of my elements reaches this strain value and distorted. I want to know which calculation the abaqus software is using to report a distortion error? 

Actually can we define our material behaviour in a way that, it would not distorted at all?

Best

Greetings,

This isn't majorly a Mechanics post but I've noticed that a lot of people have started using HPC's (which use Linux OS almost all the time), and Linux OS based desktops. It's slightly difficult for people to begin using linux but once you do there's no turning back. Here I aim to create a Linux Command cheat sheet that one can refer to. Or just have it printed and kept in the lab. 

Most of these were borrowed from tecmint.com but I've added in some more explanations and commands.

Hi my Friends,

I am doing abaqus run for a copper specimen under hydrostatic pressure. The magnetude of pressure is in order of several Giga Pascals. In my material definition, I have defined stress-strain flow up to strain of 0.4. But as you can see in attached photo, some elements show very large deformation (considerably larger than 0.4). Knowing that I have not defined stress strain behaviour for srain greater than 0.4, how this can be occure? Unfortunately, niether adaptive meshing nor element deletation were not eliminate this issue!!

Best Thanks

Dear Mechanicians,


time and again the question of modeling moving heat sources pops up, often in the context of laser heating.

One can achieve this using the subroutine DFLUX in ABAQUS.

I decided to post some links here to avoid responding with a longer explanation to every individual seeking assistance.

Please note that I have never worked with any one of these codes and have no access to ABAQUS at present.

No warranty is given by me.

"ELEMENT DELETION" is available in Abaqus Explicit:

Dear Mechanicians,


time and again the question of SMA (shape memory alloy) modeling pops up.

In ABAQUS, you can achieve this only by (V)UMAT coding or by using the little-known built-in SMA model.

In the past I have frequently responded to queries on SMA modeling and could refer to a customer help site of SIMULIA. That site is down, regrettably.

I decided to post the files here to avoid responding with a longer explanation to every individual seeking assistance and uploading the files as E-mail attachment every time.

Thursday, June 25, 2015 

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