Recent content by OnlineFEASolver

Here is a nice link to Abaqus's performance data for v6.7. http://www.simulia.com/support/v67/v67_performance.htm According to them: Both the element computations and linear equation solution can be executed in parallel. Parallelization tends to be more effective with increasing problem...

You can try my program here, but it is only limited to topology optimzation, i.e finding load path and optimal shape: http://www.onlinefeasolver.com/load_path.php Principal - http://www.OnlineFEASolver.com General FEA Consulting Services

I would avoid running a model without any constraints. I am surprised such a book would recommend just holding it with springs . Just replace one of the force on your pins with a contraint in the same direction. Principal - http://www.OnlineFEASolver.com General FEA Consulting Services

If you have sufficient mesh density then the extrapolated element nodal stress should equal the surface stress. I avoid shell coating since it adds unneccessary degrees of freedom to my models and is another source of modeling errors. Instead I just probe a consistent node where my strain gauge...

I always make a point of avoiding expressing interest in other women engineers. Most I have found to have a very big head considering how they are constantly surrounded by males. Plus why would I want to spend my time competing with a mirror image of myself? I know there are...

The thin shells on surface will just give you the surface stress. I once wrote a program that could extract bending moments, axial and torsion load going through any planar cross-section of a solid mesh. I wish most FEA programs came with this tool as it is very useful for doing equilibrium...

Just add a datum point at the intersection point and attach your beams all to this point. So instead of 2 beams, you will have 4 beams, which all share this one common point. Principal - http://www.OnlineFEASolver.com General FEA Consulting Services

Not sure if this applies to zero volume elements, but you can try adding these lines to your .env file: import os os.environ['ABA_SKIPSTRICTGEOMCHECK']='YES' del os If the bad elements are away from your area of interest, then deleting them should have no effect on your results. Of course this...

Thanks, I have added more info on the problem description here: http://www.onlinefeasolver.com/articles/problem.php The purpose of rounding to nearest 5/10 is so the new analyst should not think a design with 92 MPa stress is better than a design with 94 MPa stress. For all practical...

Using the rigid connection to connect the end of a beam to the circular edge of a bolt hole does NOT give any singularity. You have to pick the entire circular edge of the bolt hole, i.e full circumfrance. It locks all 6 dof of the beam with the circular edge, so no rigid body mode is present...

My study is not a code validation for Calculix. It is meant to be a very basic study for a new analyst on effects of mesh density and element type on results. Sadly many FE analysts do not have the advanced technical background required to understand the physics and math behind FEA. So my study...

The linear tets perform suprisingly well for the fine mesh cantilever beam. They are also good if you are just looking at relative stresses. I use them for topology optmization and they give good results for their price. I dont see a problem using them as long as you have several elements...

Ad for what? It is an educational study which I am looking for feedback on more cases to compare or any inaccuracies in my findings. Principal - http://www.OnlineFEASolver.com General FEA Consulting Services

For those interested I have completed a basic study on mesh density and element types using Calculix. The results are here: http://www.onlinefeasolver.com/articles/mesh.php Let me know your feedback and if I should model any other cases. Principal - http://www.OnlineFEASolver.com General...

Thanks for posting this link . I checked through most of them and am trying out NETGEN now. It is unfortunate that most of the tools have broken links, I presume the company/service is out of business? I would also be interested in a 2D mesher that can extrude/revolve elements. Principal -...