Plastic overload and instability
Plastic overload and instability
(OP)
Could someone please explain the main differences associated with plastic collapse and instability, in the context of bending failures of structures.
Thanks in advance,
Mike
Thanks in advance,
Mike





RE: Plastic overload and instability
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Plastic overload and instability
Would you agree on this statement. Obviously it needs tidying up and a bit more technical language in it, but I'm so far struggling to find it.
Thanks,
Mike
RE: Plastic overload and instability
Yes your statement seems OK, but bear in mind you can have plastic stability issues as well.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Plastic overload and instability
instability - "buckling" type deformation; can be elastic or plastic; with elastic buckling the structure returns to the original shape when the load is removed
though there are many, many nuances to both cases, depending on the particular situation
RE: Plastic overload and instability
So instability refers to a particular action that can happen to a beam, which is 'buckling'. However, plastic overload is a more generic effect on a structure?
Thanks,
Mike
RE: Plastic overload and instability
Do you have a specific application/situation where you need to understand failure modes?
RE: Plastic overload and instability
and like SW above, instability relates to a structural failure mode (compression or shear, permanent or elastic) ...
i don't see how the two terms could relate to one another ...