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Dynamic / Impact loads
5

Dynamic / Impact loads

Dynamic / Impact loads

(OP)
I'm conducting an experiment by which I am dropping a weight (1kg) from different heights (0.1m – 1.5m) on a model scaffold structure. How can I differentiate when the load is dynamic and when it becomes an impact load, and how can I establish a transition between the two?

This question arose as someone told me that dropping an object from a small height i.e. 1kg falling from 0.1metres will/can be considered as a dynamic load whereas 1kg falling from 1metres will be an Impact load.

Response with information in regards to the question will be appreciated.
 

RE: Dynamic / Impact loads

I've never thought of it that way before; I always considered "impact" to be a type of "dynamic load."  I'm a mechanical engineer; perhaps this differentiation is specific to structural/civil engineering?

Perhaps the distinction has to do with whether kinetic energy is significant.  If you drop the weight from a "negligible" height, then there's not much velocity reached during the fall.  How high is "negligible" is a matter of judgment.
 

RE: Dynamic / Impact loads

I agree,

Impact and dynamic are just different shades of the same thing. I would think that all cases have an impact followed by a dynamic phase(when all objects are moving as one).

RE: Dynamic / Impact loads

Since you might use the same equations to define the loads - then what is the difference??  I agree, they are the same - just semantics.

RE: Dynamic / Impact loads

I also agree. No difference at all.  

peace
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