Nonstationary stochastic response of structural systems equipped with nonlinear viscous dampers under seismic excitation

2014 ◽  
Vol 44 (1) ◽  
pp. 121-138 ◽  
Author(s):  
Enrico Tubaldi ◽  
Ioannis A. Kougioumtzoglou
Keyword(s):  
Seismic Excitation ◽  
Structural Systems ◽  
Stochastic Response ◽  
Viscous Dampers

Dynamic Stability and Failure Probability Analysis of Dome Structures Under Stochastic Seismic Excitation

2014 ◽  
Vol 14 (05) ◽  
pp. 1440001 ◽  
Author(s):  
Jie Li ◽  
Jun Xu
Keyword(s):  
Dynamic Stability ◽  
Failure Probability ◽  
Stochastic System ◽  
Dynamic Instability ◽  
Seismic Excitation ◽  
Stochastic Dynamic ◽  
Deterministic System ◽  
Density Evolution ◽  
Stochastic Response ◽  
Strength Failure

The intrinsic relationship between deterministic system and stochastic system is profoundly revealed by the probability density evolution method (PDEM) with introduction of physical law into the stochastic system. On this basis, stochastic dynamic stability analysis of single-layer dome structures under stochastic seismic excitation is firstly studied via incorporating an energetic physical criterion for identification of dynamic instability of dome structures into PDEM, which yields to sample stability (stable reliability). However, dynamic instability is not identical to structural failure definitely, where strength failure can be experienced not only in the stable structure but also when the structure is out of dynamic stability. It is practically feasible to decouple the stochastic dynamic response of dome structures to be a stable one and an unstable one according to the generalized density evolution equation (GDEE). Consequently, the global failure probability can be investigated separately based on the corresponding independent stochastic response. For unstable failure probability assessment, the failure probability is the unstable probability if the dome's failure is attributed to instability, whereas inverse absorbing is firstly implemented to get rid of the stochastic response before instability and a complementary process is filled in the safe domain immediately to finally assess the probability of strength failure after dynamic instability.

Robust Design Optimization of Structural Systems Under Evolutionary Stochastic Seismic Excitation

2014 ◽  
Author(s):  
Ioannis P. Mitseas ◽  
Ioannis A. Kougioumtzoglou ◽  
Michael Beer ◽  
Edoardo Patelli ◽  
John E. Mottershead
Keyword(s):  
Design Optimization ◽  
Robust Design ◽  
Seismic Excitation ◽  
Robust Design Optimization ◽  
Structural Systems

Stochastic response control of particle dampers under random seismic excitation

2020 ◽  
Vol 481 ◽  
pp. 115439
Author(s):  
Zheng Lu ◽  
Yuan Liao ◽  
Zhikuang Huang
Keyword(s):  
Seismic Excitation ◽  
Stochastic Response ◽  
Response Control ◽  
Particle Dampers
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