11-09-2009, 04:52 PM
hi
the main concern is to decide if the loading to wich the structures will be subjected causes a structural response that varies in time.
For example for stiff structures ( low fundamental vibration periods - see your code for clarification) wind loading can be treatead as a quasi-static loading solutioned by applying static pressures on facade or internal elements. this is not true for very flexible structures where a dynamic analysis is in demand.
Another dynamic structural problem is the foundation of heavy machines with unbalanced or excentric masses that can cause ressonance or bad bheaviour of the machine if the problem is not well studied.
Earthquake action is obvious always dynamic, altouth in can be in most cases trated with a muilti modal response spectrum analysis that is not truly a dinamic analysis.
I thing in the future de capacity based proceder will be of great acceptance and will rule in the earthquake design.
if you could tell more about your structural problem maybe i could help more .
Keep up with the good work.
the main concern is to decide if the loading to wich the structures will be subjected causes a structural response that varies in time.
For example for stiff structures ( low fundamental vibration periods - see your code for clarification) wind loading can be treatead as a quasi-static loading solutioned by applying static pressures on facade or internal elements. this is not true for very flexible structures where a dynamic analysis is in demand.
Another dynamic structural problem is the foundation of heavy machines with unbalanced or excentric masses that can cause ressonance or bad bheaviour of the machine if the problem is not well studied.
Earthquake action is obvious always dynamic, altouth in can be in most cases trated with a muilti modal response spectrum analysis that is not truly a dinamic analysis.
I thing in the future de capacity based proceder will be of great acceptance and will rule in the earthquake design.
if you could tell more about your structural problem maybe i could help more .
Keep up with the good work.