Thank you for the interesting lecture, one item to note regarding the failure of the structure due to neglection of Torsion at 38:00 The torsion which you pointed out was a hogging moment in a secondary beam, that moment appears to be such a small portion of the overall moment in that secondary beam that it could likely have been redistributed to a sagging moment in that same beam through plastic behaviour or even factors of safety, thereby nullifying the torsion theory. Ofcourse, the principle you are trying to convey of accounting of induced torsion in the structure is crucial, but it is perhaps not the best example.
So what is the difference between a restraint and a release? When and why would you ever use releases? Surely instead of using releases, just don't restrain that nodal DoF in the first place?? What am I not understanding?
A release is essentially an internal property. And a release essentially a property on the structure boundary (interface with the earth or other structure). Eg 1: if i had a simply supported beam in my structure, I would specify an appropriate release at the end of the element (defined by what freedoms the end connection has). Eg 2: if I had a simple support, I would specify an appropriate (normally 'pinned') support. You can swap these around if you want by defining the various properties carefully, but it's easier to keep them separate.
The physical reality of the structure configuration and the mathematical behavior of the structure should always be equivalent.
Thank you for the interesting lecture, one item to note regarding the failure of the structure due to neglection of Torsion at 38:00
The torsion which you pointed out was a hogging moment in a secondary beam, that moment appears to be such a small portion of the overall moment in that secondary beam that it could likely have been redistributed to a sagging moment in that same beam through plastic behaviour or even factors of safety, thereby nullifying the torsion theory.
Ofcourse, the principle you are trying to convey of accounting of induced torsion in the structure is crucial, but it is perhaps not the best example.
fantastic lecture
Excellent talk! Thanks for sharing your experience, i learned a lot.
Thank you for great vedio
very interesting lecture!
Great lecture. Thank you
So what is the difference between a restraint and a release? When and why would you ever use releases? Surely instead of using releases, just don't restrain that nodal DoF in the first place?? What am I not understanding?
A release is essentially an internal property. And a release essentially a property on the structure boundary (interface with the earth or other structure).
Eg 1: if i had a simply supported beam in my structure, I would specify an appropriate release at the end of the element (defined by what freedoms the end connection has).
Eg 2: if I had a simple support, I would specify an appropriate (normally 'pinned') support.
You can swap these around if you want by defining the various properties carefully, but it's easier to keep them separate.
this guy doesn't define or explain his terms before launching into something, so good luck trying to understand the messages...
AHHHMMMMM
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Great lecture
Great lecture