Measuring Points in FEA

[GTbrew]

Hello,

I am trying to measure points on the attached design. It is a medical check valve that I applied a hydrostatic load to, in order to determine how much the valve would open up. I am attempting to estimate the area of the opening, so that I can perform further calculations.

I would like to measure the inside corners of the opening in XYZ coordinates, so that I can establish a rough estimate of the area of the valve opening. What is the best, and what is the easiest way to get those coordinates? I am using NX 7.5

 

[IRstuff]

Might help if you can get a shot from end-on. There are image processing programs like ImageJ that might be able to do something with that.

TTFN
faq731-376

 

[jhardy1]

What are the chances of a mesh that coarse giving you any reasonable predictions of its actual behaviour? I think you probably need to refine your mesh a bit before you start to believe any of the results of your analysis.

Once you have a reasonable working analysis, getting the area of opening from the deflected shape should be quite straightforward - just plot the deflected coordinates as a 2D plot, and integrate under the curve to get the area.

http://julianh72.blogspot.com

 

[rb1957]

you know how far the corners are translating ...
so you know the distance between the four corners,
and you should be able to calculate a pretty close approximation for the opening area of each of the four triangle-ish areas ...