Hello all. I am a new user to FEMAP.
I am doing FEA Analysis and get results from von mises stress. But the problem is that I can see only numbers without units. There is not unit legend in the graph.
Do you how can I show up the units or change the unit system to SI ??
Thank you in advance
Solved! Go to Solution.
FEMAP do not manage any unit system, is the only user responsibility to have a coherent system of units between length, area, force, stress, etc..
The first task to do is to set the units when importing geometry, this is the only case that FEMAP set units: if you want geometry in meters, set scale factor = 1.0
Later is only you the responsible to set a coherent system of units: if you define geometry in meters, and enter loads in N or pressure in N/m2, and define Young Module in Pascals, then stresses will be in Pascals (ie, N/m2) as well and displacement results in meters, OK?.
Here is a link to a usefull PDF (courtesy of CADimage PLM).
Go to page 5 in this PDF, there you have most of the units in all major unit systems (including mm) and how to convert between them.
In fact, this is a problem in FEMAP, specially for beginners. But I agree with you that this should be improved urgently, not excuses, any modern FEA software like FEMAP should include native support of units management to avoid user errors. Please developers ....
I guess you are referring to TOPOLOGY Optimization??. This is TOSCA, not NX NASTRAN, then here not too much to do, this is a third party software, take a look here:
Regarding to use the optimized shape as input for a FE model, well, the focus behind Topology Optimization is to get the "design idea", then based in the idea you modify the geometry base and perform all the FEA analysis required.
Take a look to this post for "ideas" to take advanced of the optimized shape written in STL. The workflow is to create geometry and the to mesh with solid elements. But from the practical point of view the most efficient way, in my opinion, is create new geometry (in FEMAP or using SolidEdge ST6) based in the optimized shape: