Energy Dissipation in a Structure
Energy Dissipation in a Structure
(OP)
I am having a hard time understanding the theory behind the physical energy dissipation involved in structures. Suppose I have two different cantilevered beams. One of them is rigid and the other one is flexible. If I apply the same concentrated force to the free end of both beams what are the consequences in regard to energy dissipation and stress distribution?






RE: Energy Dissipation in a Structure
Howver, if one is ten times as stiff as the other, then you will only put 1/10 times as much energy into it.
Th stress distribution effect will depend on how you've made one beam more rigid than the other.
This would make a good homework question...
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: Energy Dissipation in a Structure
RE: Energy Dissipation in a Structure
TTFN
RE: Energy Dissipation in a Structure
RE: Energy Dissipation in a Structure
Mendacity is a system that we live in. Liquor is one way out and death's the other.
-Tennessee Williams
RE: Energy Dissipation in a Structure
Niggling technical point...
Energy dissippated is not a function of stiffness. It is due to internal damping, and whether or not you exceeded the yield stress of the material. Creep if it is present, is a factor too. Springs store energy.
JHG