...or to meander a little further in that direction: When a mechanical transmission line receives a point impulse, call it a Dirac pulse, that pulse propagates at the local speed of sound. Depending on the acoustic match, the traveling wave may be evanescent or it may continue…
Read the full replyDear mech community,
I just had an argument in linear beam theory concerning the displacement of a beam with punctual momentum load under consideration of shear stresses. I claim a discontinuity of displacement at the location of punctual momentum. Is that true?
Many thanks in advance to the honorable character to share its knowledge!
no
...or to meander a little further in that direction: When a mechanical transmission line receives a point impulse, call it a Dirac pulse, that pulse propagates at the local speed of sound. Depending on the acoustic match, the traveling wave may be evanescent or it may continue to a discontinuity, like the ends....
Brian Whatcott Altus OK
Thanks Bob,
though precise, this 2-byte answer is not quite satisfactory. What if the punctual momentum is the limit of a sinusoidal shear force? The integral forces would be null while the momentum is finite.
Max
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