jaggmi
Mechanical
- Aug 8, 2002
- 4
We have a requirement to provide a 4 foot long cantilevered structure that must withstand a 250 lb person stepping on it, mid span (2 feet)to reach into the machine. If not for this requirement the beam would only support its own weight which would be about 50 lb. We will need to make it much stiffer but have very limited space so we can not do an over kill add a lot of section just to play it safe.
If a person raised one foot onto the beam and raised his full weight by loading the beam with that foot, what load would you use to design the beam? After he steps off the beam must still function. The beam is supporting an optical device that is at a set focus. A few thousands of an inch set would be ok but total operating distance is only +/- 1 MM (~+/-.040"
.
If a person raised one foot onto the beam and raised his full weight by loading the beam with that foot, what load would you use to design the beam? After he steps off the beam must still function. The beam is supporting an optical device that is at a set focus. A few thousands of an inch set would be ok but total operating distance is only +/- 1 MM (~+/-.040"
.