marksummers
Mechanical
- Aug 29, 2007
- 27
I am trying to model a simple assembly for a static analysis in Pro/Mechanica. It consists of two SST shafts and two aluminum tubes. The tubes run front-to-back, and at the end of each tube are two holes on each side with pressed in bushings. In between the tubes, and running perpendictular to the length of the tubes are my shafts. Each end of the shafts rides on two tube bushings.
Looking from the top:
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To transfer the loads (direction down in my lame picture above) at the middle of the shafts to the tubes, I simplifed the model such that the bushings are gone, and the hole size in the tubes are exactly the same size as the shaft diameters. I figured I would create surface regions on the shafts to coincide with the surface of the holes in the tubes.
However, I can't seem to generate surface regions on the shaft surfaces. I can generate datum curves on the shafts using the xref option, but when I try to generate surface regions, it will only let me select one datum curve, and then immediately asks for the surface(s). Once I select the surfaces, it generates a surface region starting at the selected datum curve, but instead of stopping at the second unselectrwed datum curve, it continues until the surface ends at the end of the shaft.
Any ideas? It seems as if creating sufface regions and using them to define contact connections (and automatically created measures to extract surface contact pressures) was an ideal way to model this assembly, but maybe not. I am used to Split Faces in Solidworks and Inventor, but Pro/E does not seem to have such a feature.
Any and all comments are appreciated.
Looking from the top:
? ?
?--?---------------------------?--?
? ?
? ? ? ?
?--?---------------------------?--?
? ?
? ?
? ?
?--?---------------------------?--?
? ?
? ?
? ?
?--?---------------------------?--?
? ?
To transfer the loads (direction down in my lame picture above) at the middle of the shafts to the tubes, I simplifed the model such that the bushings are gone, and the hole size in the tubes are exactly the same size as the shaft diameters. I figured I would create surface regions on the shafts to coincide with the surface of the holes in the tubes.
However, I can't seem to generate surface regions on the shaft surfaces. I can generate datum curves on the shafts using the xref option, but when I try to generate surface regions, it will only let me select one datum curve, and then immediately asks for the surface(s). Once I select the surfaces, it generates a surface region starting at the selected datum curve, but instead of stopping at the second unselectrwed datum curve, it continues until the surface ends at the end of the shaft.
Any ideas? It seems as if creating sufface regions and using them to define contact connections (and automatically created measures to extract surface contact pressures) was an ideal way to model this assembly, but maybe not. I am used to Split Faces in Solidworks and Inventor, but Pro/E does not seem to have such a feature.
Any and all comments are appreciated.