scholarly journals A comparative study on three different construction methods of stiffened plates-strength behaviour and ductility characteristics

2007 ◽  
Vol 60 (2) ◽  
pp. 365-379
Author(s):  
Mohammad Reza Khedmati ◽  
Khosrow Ghavami ◽  
Mehran Rastani
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Compressive Load ◽  
Steel Plates ◽  
Stiffened Plates ◽  
Construction Methods ◽  
Inland Waterway ◽  
Stiffened Steel ◽  
Continuous Chain ◽  
Strength And Ductility

Strength and ductility characteristics of non-continuously welded stiffened plates under in plane axial compression are the main focus of this research. A series of detailed numerical analyses of stiffened steel plates subjected to in plane compressive load is performed. Complete equilibrium paths are traced up to collapse for non-linear elastoplastic response of stiffened plates. Stiffened plates are selected from the deck structure of real sea-going ships and inland waterway vessels. Three different stiffener-to-plate welding procedures are considered: continuous, chain intermittent and staggered intermittent fillet welding. Special attention is paid to the finite element modeling of the fillet welds in either of welding practices. Some available tests are simulated applying finite element method.

Nonlinear Elastoplastic Behaviour of Intermittently Welded Stiffened Plates Under Inplane Compression

2006 ◽  
Author(s):  
Mohammad Reza Khedmati ◽  
Mehran Rastani
Keyword(s):  
Finite Element ◽  
Compressive Load ◽  
Steel Plates ◽  
Stiffened Plates ◽  
Finite Element Code ◽  
Stiffened Plate ◽  
Plate Models ◽  
Different Types ◽  
Stiffened Steel ◽  
Continuous Chain

The objective of this study is to investigate the sensitivity of the ultimate strength and failure mechanism of stiffened plates constructed by different welding methods in common. A series of detailed numerical analyses of longitudinally stiffened steel plates subjected to inplane compressive load are performed using ADINA commercial finite element code. Complete equilibrium paths are traced up to collapse for nonlinear elastoplastic response of stiffened plates. Stiffened plates analysed are imperfect and their aspect ratio, plate slenderness and column slenderness are changed in a systematic manner. Different types of stiffener are chosen for stiffened plate models. Three different stiffener-to-plate welding procedures are considered: continuous, chain intermittent and staggered intermittent fillet welding.

Ultimate Strength and Ductility Characteristics of Intermittently Welded Stiffened Plates Under In-Plane Axial Compression

2007 ◽  
Vol 130 (1) ◽  
Author(s):  
Mohammad Reza Khedmati ◽  
Mehran Rastani
Keyword(s):  
Ultimate Strength ◽  
Axial Compression ◽  
Compressive Load ◽  
Steel Plates ◽  
Stiffened Plates ◽  
Plate Models ◽  
Nonlinear Elastic ◽  
Stiffened Steel ◽  
Continuous Chain ◽  
Strength And Ductility

The ultimate strength and ductility characteristics of the intermittently welded stiffened plates under the action of in-plane axial compression are investigated in this paper. A series of detailed numerical analyses of longitudinally stiffened steel plates subjected to in-plane compressive load is performed using the ADINA commercial finite element code. Complete equilibrium paths are traced up to collapse for a nonlinear elastic-plastic response of stiffened plates. Analyzed stiffened plates are imperfect and their aspect ratio, plate slenderness, and column slenderness are changed in a systematic manner. Different types of stiffener are chosen for stiffened plate models. Three different stiffener-to-plate welding procedures are considered: continuous, chain intermittent, and staggered intermittent fillet welding.

Buckling Analysis of Stiffened Plates by Ritz Method

2015 ◽  
Vol 756 ◽  
pp. 518-523
Author(s):  
L.M. Savelyev ◽  
O.V. Borisova
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ritz Method ◽  
Compressive Load ◽  
Buckling Analysis ◽  
Wave Formation ◽  
Stiffened Plates ◽  
Element Method

The Ritz method is used for the buckling analysis of stiffened plates under compressive load. Suggested approximations of displacements allow taking into account the features of system wave formation. The results are compared with data, received by finite element method.

Research on Load Bearing Behavior of Ship Stiffened Plates under Cyclic Loads

2014 ◽  
Vol 904 ◽  
pp. 446-449
Author(s):  
Hu Wei Cui ◽  
Ping Yang ◽  
Can Shen ◽  
Liang Zhou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Ultimate Strength ◽  
Nonlinear Finite Element ◽  
Stiffened Plates ◽  
Cyclic Loads ◽  
Nonlinear Finite Element Method ◽  
Load Bearing ◽  
Different Dimensions ◽  
Bearing Behavior

This paper adopts nonlinear finite element method to study the load bearing behavior of ship stiffened plates with different dimensions. The research focuses on the compressive ultimate strength, axial rigidity, and residual plastic deflection of the stiffened plates under cyclic compressive and tensile loads. The results indicate that the compressive ultimate strength and axial rigidity of stiffened plates decrease with the incremental cyclic loads significantly, meanwhile, the residual plastic deflection increases with the cyclic loads.

scholarly journals Vibration analysis of stiffened plates using finite element method

2012 ◽  
Vol 9 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Shahed Jafarpour Hamedani ◽  
Mohammad Reza Khedmati ◽  
Saeed Azkat
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Vibration Analysis ◽  
Stiffened Plates ◽  
Element Method

Construction Methods on Mechanical and Material's Deformation Control during Assembling and Erecting Cup Type Transmission Tower

2014 ◽  
Vol 540 ◽  
pp. 205-208
Author(s):  
Xiao Guang Hu ◽  
Jing Bo Yang ◽  
Zi Fu Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Transmission Tower ◽  
Deformation Control ◽  
Construction Methods ◽  
Assembly Method ◽  
Tower Structure ◽  
The Cross ◽  
Element Method

Take a 1000kV Cup-Type tubular steel test tower as research object, and it is the first one of this type used in heavy ice area. Research on the assembly load’s affect to tower structure was made. The process of assembling tower using suspend guyed pole was analyzed with Finite Element Method. Structures overhanging the tower body, such as cross arms and bracket of earth wire, could be assembled in different ways. The different affect to the built structure corresponding to different assembly method was researched. The objective is to make the deformation of the structure minimum. It was indicated that, reinforce the K-joint by cable and the deformation of structure reduced obviously. The reinforce method is simple and efficient, and ensure the cross arm assembling smoothly. It is avail to improve the assemble quality of the whole structure.

Study on Buckling of an H-Shaped Steel Member with Initial Geometric Imperfection

2012 ◽  
Vol 204-208 ◽  
pp. 3226-3229
Author(s):  
Peng Niu ◽  
Gang Yang ◽  
Chun Fu Jin
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Bearing Capacity ◽  
Compressive Load ◽  
Bending Moment ◽  
Ultimate Bearing Capacity ◽  
Geometric Imperfection ◽  
Elastic Plastic ◽  
Axial Compressive Load ◽  
Initial Geometric Imperfection

Based on Ježek method of computing the elastic-plastic buckling of the member under the axial compressive load and the bending moment, considering the initial imperfection, the analytical expressions of calculating the ultimate load of buckling about the neutral axis with the maximum moment of inertia for an H-shaped member are derived. Using the elastic-plastic finite element method and the theory of nonlinear buckling, the impact by initial geometric imperfections on the H-shaped steel member under the axial compressive load and the bending moment are analyzed and the numerical solutions of ultimate bearing capacity are obtained. By compared with the values of the finite element method (FEM), it shows that the analytical method in this paper is valid. The results of the example show that the presence of initial imperfections reduces the ultimate bearing capacity of the steel member to a great extent. It is also found that the influence of the initial geometric imperfection on the ultimate bearing capacity of member is smaller when the bending moment increases.

Vibration and Buckling Analysis of Curvilinearly Stiffened Plates Using Finite Element Method

AIAA Journal ◽  
2015 ◽  
Vol 53 (5) ◽  
pp. 1319-1335 ◽  
Author(s):  
Peng Shi ◽  
Rakesh K. Kapania ◽  
C. Y. Dong
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Buckling Analysis ◽  
Stiffened Plates ◽  
Element Method
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