desertfox,
FEA shows 20ksi at the inner radius(0.18), SF of 1.8. There are no cracks on the inside or the outside of the channel from forming or otherwise.
Changing the inner radius to 0.25" lowers the stress to 13.2ksi, SF of 2.7.
seymours2571,
Higher strength material may very well be the...
Here's a cutaway of the channel to show the loading direction.
Allied Systems Company
- Long Reach Attachmentshttp://files.engineering.com/getfile.aspx?folder=0e256d5b-2e29-471a-b543-88b952a7c3c8&file=Channel_cutaway.jpg
I have a formed channel 1.25 legs x 2.2 height 19" long, 0.25" thickness, A36 material, with an inside bend radius of 0.18". The channel is loaded with a 1.5" dia roller that rides against the legs of the section. The loading is not extreme, usually around 500 lbs. We see the channel opening up...
