- #1
TTM
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Hello,
First time post long time lurker! I've got an interesting project I am working on which involves a few MechE subjects. The overall goal (for now) is to determine the drag force of a cylindrical cone headed object in sand under various pressures. The movement of the cylinder is the tricky part.
The subproblem is to measure the impulsive force imparted onto the cylindrical object. I have a simple experimental setup in mind (maybe you can tell me otherwise :) ) It involves mounting a load cell on the end of a pendulum and aligning the vertical at rest position of the striking end of the cell with some kind of dowel pole connected to the cylinder submerged in my sandy test bed. setting the pendulum to fall at larger angles will direct more force.
One of the main problems I am having with connecting the student/on paper world to the real world is the measurement mechanism. I know load cells are usually used for static loads, so maybe the response will not be fast enough to measure this .2 second collision. Would an accelerometer be more suited? also, how do I actually collect the data? I am learning more about labVIEW and it seems like a likely candidate. Finally, an I haven't thought this out very well, would these force measurements alone provide what we need to determine the drag on the cylinder? (given densities, pressures, displacements, velocities)
First time post long time lurker! I've got an interesting project I am working on which involves a few MechE subjects. The overall goal (for now) is to determine the drag force of a cylindrical cone headed object in sand under various pressures. The movement of the cylinder is the tricky part.
The subproblem is to measure the impulsive force imparted onto the cylindrical object. I have a simple experimental setup in mind (maybe you can tell me otherwise :) ) It involves mounting a load cell on the end of a pendulum and aligning the vertical at rest position of the striking end of the cell with some kind of dowel pole connected to the cylinder submerged in my sandy test bed. setting the pendulum to fall at larger angles will direct more force.
One of the main problems I am having with connecting the student/on paper world to the real world is the measurement mechanism. I know load cells are usually used for static loads, so maybe the response will not be fast enough to measure this .2 second collision. Would an accelerometer be more suited? also, how do I actually collect the data? I am learning more about labVIEW and it seems like a likely candidate. Finally, an I haven't thought this out very well, would these force measurements alone provide what we need to determine the drag on the cylinder? (given densities, pressures, displacements, velocities)