Mode shape linearization and correction in coupled dynamic analysis of wind-excited tall buildings

2010 ◽  
Vol 20 (3) ◽  
pp. 327-348 ◽  
Author(s):  
Mingfeng Huang ◽  
Kam-Tim Tse ◽  
Chun-Man Chan ◽  
Kenny C. S. Kwok ◽  
Peter A. Hitchcock ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Mode Shape ◽  
Tall Buildings ◽  
Coupled Dynamic Analysis

Coupled dynamic analysis of a mini TLP: Comparison with measurements

2006 ◽  
Vol 33 (1) ◽  
pp. 93-117 ◽  
Author(s):  
Xiaohong Chen ◽  
Yu Ding ◽  
Jun Zhang ◽  
Pierre Liagre ◽  
John Niedzwecki ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Coupled Dynamic Analysis

Numerical Study for Global Detection of Cracks Embedded in Beams

1999 ◽  
Author(s):  
S. A. Lipsey ◽  
Y. W. Kwon
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Natural Frequency ◽  
Mode Shape ◽  
Numerical Study ◽  
Element Model ◽  
Mode Shapes ◽  
Linear Effect ◽  
Modes Of Vibration ◽  
Damage Simulation

Abstract Damage reduces the flexural stiffness of a structure, thereby altering its dynamic response, specifically the natural frequency, damping values, and the mode shapes associated with each natural frequency. Considerable effort has been put into obtaining a correlation between the changes in these parameters and the location and amount of the damage in beam structures. Most numerical research employed elements with reduced beam dimensions or material properties such as modulus of elasticity to simulate damage in the beam. This approach to damage simulation neglects the non-linear effect that a crack has on the different modes of vibration and their corresponding natural frequencies. In this paper, finite element modeling techniques are utilized to directly represent an embedded crack. The results of the dynamic analysis are then compared to the results of the dynamic analysis of the reduced modulus finite element model. Different modal parameters including both mode shape displacement and mode shape curvature are investigated to determine the most sensitive indicator of damage and its location.

An integrated design technique of advanced linear-mode-shape method and serviceability drift optimization for tall buildings with lateral–torsional modes

2010 ◽  
Vol 32 (8) ◽  
pp. 2146-2156 ◽  
Author(s):  
M.F. Huang ◽  
K.T. Tse ◽  
C.M. Chan ◽  
K.C.S. Kwok ◽  
P.A. Hitchcock ◽  
...  
Keyword(s):  
Mode Shape ◽  
Integrated Design ◽  
Tall Buildings ◽  
Design Technique ◽  
Linear Mode

Dynamic Analysis of Tall Buildings Using Galerkin Method

1988 ◽  
pp. 1196-1199
Author(s):  
S. L. Lee ◽  
S. Swaddiwudhipong ◽  
S. T. Quek
Keyword(s):  
Dynamic Analysis ◽  
Galerkin Method ◽  
Tall Buildings

Time-Domain Coupled Dynamic Analysis of Mooring Systems in Extreme Sea Condition

2018 ◽  
Author(s):  
Xuliang Han ◽  
ShiSheng Wang ◽  
Bin Xie ◽  
Wenhui Xie ◽  
Weiwei Zhou
Keyword(s):  
Dynamic Analysis ◽  
Body Surface ◽  
Time Domain ◽  
Mooring Line ◽  
Mooring System ◽  
Dynamic Coupling ◽  
Spar Platform ◽  
Coupled Dynamic Analysis ◽  
Motion Responses ◽  
The Time Domain

In order to predict the coupled motion and external wave load for the design of deepwater floating structure system, based on the three-dimensional time-domain potential flow theory, this paper present the indirect time-domain dynamic coupling method and the body nonlinear dynamic coupling method. The perturbation expansion theory is adopted to evaluate hydrodynamic on the fixed mean wetted body surface for the former method. The transient free surface Green function has been extended and applied to calculate the nonlinear hydrodynamic on the instantaneous wetted exact body surface for the latter method. The finite element model is employed to solve dynamic response of mooring line. Then asynchronous coupled method is adopted to achieve the coupled dynamic analysis of platform and mooring lines. The time-domain motion responses and spectrum analysis of Spar platform are verified and compared with the traditional indirect time-domain coupling dynamic method when the mooring system is completed. Also the time-domain motion responses and statistical characteristic of Spar platform are investigated with one mooring line broken in extreme sea condition. Some conclusions are obtained, that is, dynamic coupling effects are significant and transient position hydrodynamic calculation of platform has a great influence on the low frequency motion. The results also show that the influence on the global performance of mooring system is different when the broken line is in different place. A remarkable influence occurs when the broken mooring line is in the head-wave direction.

Sign in / Sign up

Export Citation Format

Share Document