Nevermind, I figured it out. I changed the specific heat capacity to very small values and bumped up the conductivity and then the transient solution looked a lot like the steady state one - so I concluded that I needed to bump up the end time for the transient by a factor of 10,000 before the...
Hello,
I started using the heat transfer option in CAE the other day. I created a simple 3D bar with a fixed temperature BC at each end (in this case 0 and 150 degrees).
In all the other FEA programs I have used the surface with no loads or boundary conditions is considered to be adiabatic or...
FEM mode is NOT Mechanica, its actually a different PTC product that used to be called Pro/MESH. It is meant only for defining loads/constraints, material props, a mesh, and then exporting to 3rd party solver (Ansys and Nastran but again that might have changed).
So just to be clear, when the...
I have used Ansys until 3 years ago, and been using Abaqus for about 4 months now. Abaqus seems more user friendly but once you start getting into it you begin to realize there is so much you don't know. Its a bottomless pit in some ways. The documentation is good for the regular UI stuff, but I...
Displacement at zero frequency usually means rigid body motion. I thought it could be deformation caused by static load, but if I recall correctly dynamic analyses in Mechanica solve for acceleration and then integrate to get velocity and displacement.
I would check the rigid modes box in the...
Its been a while since I used Mechanica, but what you can do is define a datum point and add a mass element to it. Then define a weighted link between the point and the surface. The point should be located on the centroid of the surface so that you do not alter the desired mass moment of inertia...
I am curious about this as well. I spent the last 2 days trying to do this using the mp_host_list abaqus environment option. It seems most people do not use this option because they are running a queue program like PBS or Platform LFS on a Windows HPC cluster.
I can share with you what I have...
Ok I think I figured this out. GPGPU will work with an ATI card, but it is undocumented:
http://develop3d.com/blog/2011/05/automakers-cut-engineering-simulation-times-using-gpu-accelerated-abaqus-fe
In the last paragraph it says "According to AMD, OpenCL support is currently an undocumented...
Thanks for the information guys. I found what I was looking fore by searching the Help for GPGPU instead of GPU. It certainly seems like only nVidia is supported, but I have seen news releases saying that ATI is supported...
Yeah it sounds like the parallelization tab in the job menu. I checked that out but it didn't have anything that looked like GPU or opencl settings. I'll go back and have another look. Thanks.
Hello All,
I was looking for more ways to squeeze computational performance on my machine when I came across a few press releases from nVidia, Simulia and ATI saying that Abaqus 6.11 is OpenCL compliant and supports GPU computing.
I updated the drivers for my ATI Firepro v8800 and used a 3rd...
Hello,
I would like to be able to plot model maximum values (e.g. maximum stress, maximum displacement) versus time in an XYdata chart/curve. So far I have found no model maximum values in the Field or History output options. For instance the Max Mises field output option requires a specific...
Never mind, I found out what the problem was on a hunch. When copying data from Excel to Abaqus, you need to make discrete selections instead of highlighting & copying an entire column.
Hello,
I am defining a time dependent load in Abaqus CAE using the tabular option and it becomes unresponsive after I copy & and paste the two data columns in and click 'OK' At first my data was about 30,000 rows long but then I reduced it to 3,000 rows. It still hangs even though I left it 16...
Oh I wasn't surprised about the effects of the point load, I was working with the options available.
The problem with pressure loads is that by definition they are normal to the surface they are applied. Works fine for flat surfaces, but for non-flat surfaces where you don't want the force to...
