Non-linear behaviour of sandy soil for the city of Catania

Author(s):  
A. Cavallaro ◽  
M. Maugeri
2021 ◽  
Vol 305 ◽  
pp. 124747
Author(s):  
Rodolfo Lorenzo ◽  
Leonel Mimendi ◽  
Dong Yang ◽  
Haitao Li ◽  
Theodora Mouka ◽  
...  

Author(s):  
Lasse Theilen ◽  
Ole Detlefsen ◽  
Moustafa Abdel-Maksoud ◽  
Michael Bohm

The numerical prediction of green water loads on super-structures is challenging due to the high number of required calculations to identify the critical operational conditions in the seaway which lead to overcoming seawater on deck. Further, the simulation of the non-linear behaviour of water on the deck and the prediction of impact loads require high computational effort. This paper presents an efficient three-step approach to simulate green water loads. The application of the developed procedure will be demonstrated on a mega yacht geometry.


Author(s):  
S Cafferty ◽  
G. R. Tomlinson

Automotive dampers are an important element of a vehicle's suspension system for controlling road handling and passenger ride comfort. Many automotive dampers have non-linear asymmetric characteristics to accommodate the incompatible requirements between ride comfort and road handling, thus the ride comfort engineer requires techniques that can characterize this non-linear behaviour and provide models of the dampers for use in ride performance simulations of the full suspension system. The work presented in this paper is concerned with developing a frequency domain technique using higher order frequency response functions (HFRFs) to characterize a Monroe automotive damper. The principal diagonals and multidimensional surfaces of the HFRFs up to third order are obtained. Non-linear damping coefficients for the damper are derived from the HFRFs and the energy transfer properties are investigated. The results show that the majority of the HFRFs contain no peaks or resonances, indicating that the damper has no preferred frequencies for energy transfer. The accuracy of the damping coefficients determined from the HFRFs is poor. This is due to the inability of the technique to measure the pure HFRFs and separate the effects of non-linearities in the input actuator from those in the damper. It is concluded that these constraints currently impose some limit on the use of the methodology.


1996 ◽  
Vol 366 (3) ◽  
pp. 432-444 ◽  
Author(s):  
P.D. Cobden ◽  
N.M.H. Janssen ◽  
Y. van Breugel ◽  
B.E. Nieuwenhuys
Keyword(s):  

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