A finite element model for the analysis of wave induced stresses, displacements and pore pressures in an unsaturated seabed. II: model verification

1995 ◽  
Vol 32 (4) ◽  
pp. A154
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Model Verification ◽  
Pore Pressures ◽  
Induced Stresses ◽  
Wave Induced

scholarly journals NEARSHORE CIRCULATIONS DUE TO WAVE INDUCED CURRENTS BY OFFSHORE BREAKWATER IN FINITE ELEMENTS

1986 ◽  
Vol 1 (20) ◽  
pp. 150
Author(s):  
Shinn-Chung Liang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Shallow Water Equation ◽  
Wave Theory ◽  
Element Model ◽  
Wave Pattern ◽  
Shore Protection ◽  
Radiation Stress ◽  
Induced Currents ◽  
Wave Induced

The objective of the present study is concerned with the numerical prediction of wave patterns and wave induced currents adjacent to a breakwater. The wave theory used is that of Berkhoff's (1972) mild slope wave equation with effects of diffraction, refraction and reflection described as Bettess, Liang and Bettess (1984). A finite element model is applied with appropriate boundary conditions. The singularity in the velocity at the tip of the breakwater is modelled effectively using the technique of Henshell and Shaw (1975), originally developed for elasticity. In the case of waves induced currents a potential representation of velocity in the fluid has be€>n used to derive a set of radiation stress expressions based on the theory of Longuet-Higgins (1964, 1970a,b), which are for an arbitrary wave pattern and the bottom variation. These expressions used account for the mean sea level and satisfy Mei's (1973) static balance of momentum flux. The radiation stress is applied to obtain forcing terms for use in a shallow water equation in conjunction with limiting ratio wave breaking where wave height, wave period, wave steepness and beach slope may be considered. Finally, an offshore breakwater on a beach for shore protection has been applied in a complete finite element model to predict both wave pattern and nearshore currents. Two angles of wave incidence are chosen. A series result has been produced.

scholarly journals Hull dynamics and strength of fast electric boat

2020 ◽  
Vol S-I (2) ◽  
pp. 224-229
Author(s):  
S. Ryabushkin ◽  
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Strain State ◽  
Element Model ◽  
Regular Waves ◽  
High Compliance ◽  
Calculation Results ◽  
Response Amplitude Operators ◽  
Global And Local ◽  
Wave Induced

This paper identifies trim & draft parameters (spatial trimming) of a real fast boat with low-capacity motor, mostly running as a displacement vessel. The paper discusses various loading cases and calculates integral parameters in still water and regular waves (of various frequencies and incidence angles) for the ship at standstill and running at different speeds, also giving response-amplitude operators (RAOs) of motions and wave-induced moments. The study also gives calculation results for threedimensional fields of hydrostatic and hydrodynamic pressures and acceleration for further analysis of stress-strain state taking into account that finite-element model has no supports. High compliance (both global and local) of non-metal hull implies that the procedure suggested in this paper could be experimentally validated in future.

scholarly journals Element Modeling of Masonry Wall With Opening Under Lateral Force

2018 ◽  
Vol 1 (2) ◽  
pp. 71
Author(s):  
Danna Darmayadi ◽  
Muhamad Rusli Ahyar
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Three Dimensional ◽  
Element Model ◽  
Lateral Force ◽  
Masonry Wall ◽  
Model Verification ◽  
Dimensional Finite Element ◽  
Parametric Studies ◽  
Three Dimensional Finite Element

Abstract: Three-dimensional Finite Element Model for Masonry Wall with openings under lateral force using ABAQUS software. Finite element model verification with an experiment masonry wall in the laboratory without openings. The load-displacement relationship of finite element model is well agreed with experimental results. Parametric studies conducted on masonry wall with openings to investigate the influence of an area of openings. This research aimed to investigate the behavior of Masonry Walls with openings under lateral force. The result showed that the increase of the area of openings decreases stiffness and strength of masonry. It is also well observed from the result that lateral resistance of masonry will decrease for each area of the opening wall.

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