Continuous Beam theory
Continuous Beam theory
(OP)
Just a quick question... I'm trying to calculate the moments n reaction for a shaft with 7 bearings... I understand the 3 moments theorem but i m not too sure on how to implement it with 7 moments.
please can anyone provide me an answered example of a beam with any number of moments from 5 to 7 so i can try to figure out how i can solve my model?
thanks :)
please can anyone provide me an answered example of a beam with any number of moments from 5 to 7 so i can try to figure out how i can solve my model?
thanks :)





RE: Continuous Beam theory
Easier said than done.
Mike McCann
MMC Engineering
RE: Continuous Beam theory
you have a highly redundant beam (5 redundancies). Moment distribution, as suggested by mike, is one way to solve this. 3 moment equation can be applied, i think it is an iterative process applied two two bays at a time; but this doesn't look near as elegant as MDM. FEA would be a simple approach too, the model would be small enough to fit within most demo versions.
RE: Continuous Beam theory
If you simplify to 1-D this can be done by writing your own code. I would write this preferably in Matlab.
I never heard of the "Moment Distribution" method. Maybe someone has a reference?
Fe
RE: Continuous Beam theory
i think it is a reasonably typical "old school" structural analysis method (ie "back in the day" when FEA was difficult ...)
RE: Continuous Beam theory
Thanks rb1957.
Fe