Failure load in static structural analysis

sijusimon · March 6, 2018, 06:20

I modelled a RC beam column joint in ansys workbench static structural. I gave a displacement increment at column face in cyclic manner. I want to obtain the ultimate load it can take. How can I obtain the result..?

Christophe · March 15, 2018, 20:47

You as the user need to choose a highly specific failure mechanism and evaluate against it. You can't just take a 3-D model and "FEA it" and get a definitive go/no-go. There's fatigue, yielding, deformation, rupture, buckling, etc which causes failures. You need to evaluate all the conditions you care about. As for interpretation, often it helps to have physical test data if this is a new type of analysis for you.

sijusimon · March 15, 2018, 21:00

How can define failure mechanism in ansys..?

karachun · June 22, 2018, 04:14

First of all, you have to decide what is failure criterion for your structure - read books and standards in your specialty.
For example, steel structure, globally, is ok if it not exceeds max deflections, and forces at structure members don’t exceed limits dictated by strength and buckling.
You can read Eurocode for concrete structures to see example of criterions.

March 6, 2018, 06:20	Failure load in static structural analysis	#1
sijusimon New Member Siju simon Join Date: Nov 2017 Posts: 18 Rep Power: 8	I modelled a RC beam column joint in ansys workbench static structural. I gave a displacement increment at column face in cyclic manner. I want to obtain the ultimate load it can take. How can I obtain the result..?

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March 15, 2018, 20:47		#2
Christophe Member Join Date: Jan 2015 Posts: 62 Rep Power: 11	You as the user need to choose a highly specific failure mechanism and evaluate against it. You can't just take a 3-D model and "FEA it" and get a definitive go/no-go. There's fatigue, yielding, deformation, rupture, buckling, etc which causes failures. You need to evaluate all the conditions you care about. As for interpretation, often it helps to have physical test data if this is a new type of analysis for you.

March 15, 2018, 21:00		#3
sijusimon New Member Siju simon Join Date: Nov 2017 Posts: 18 Rep Power: 8	How can define failure mechanism in ansys..?

June 22, 2018, 04:14		#4
karachun Senior Member Join Date: Nov 2015 Posts: 246 Rep Power: 11	First of all, you have to decide what is failure criterion for your structure - read books and standards in your specialty. For example, steel structure, globally, is ok if it not exceeds max deflections, and forces at structure members don’t exceed limits dictated by strength and buckling. You can read Eurocode for concrete structures to see example of criterions.