scholarly journals Scale model design for the stiffened plate subjected to combined longitudinal compression and lateral pressure considering collapse modes

2022 ◽  
Vol 243 ◽  
pp. 110289
Author(s):  
Hongyang Ma ◽  
Hongyuan Mei ◽  
Deyu Wang
Keyword(s):  
Lateral Pressure ◽  
Scale Model ◽  
Model Design ◽  
Stiffened Plate ◽  
Longitudinal Compression

Particle Flow Simulation for Large Diameter Squat Silos Eccentric Discharge

2011 ◽  
Vol 99-100 ◽  
pp. 1106-1112
Author(s):  
Fang Yuan ◽  
Cheng Ying Dong ◽  
Yao Hui Song ◽  
Song Song Zhang
Keyword(s):  
Lateral Pressure ◽  
Large Diameter ◽  
Pressure Coefficient ◽  
Side Wall ◽  
Operating Conditions ◽  
Particle Flow ◽  
Scale Model ◽  
Maximum Pressure ◽  
Centrifuge Model Test ◽  
Eccentric Distance

The scale model of squat silo in large diameter was established with Particle Flow Code (PFC3D) in this paper. This scale model uses the centrifuge model test principle for reference and provides the field of gravity in the calculation of archetypal squat silo. When the silo filled with granules reaches static equilibrium state, record the static lateral pressure measurement values of its each column measured wall, followed by eccentric discharge simulation in different operating conditions, while monitoring the changes of Measured walls in five different directions during discharging granules, in order to analyze the influence of eccentric discharge on the lateral pressure of large diameter squat silos wall. Thus the following conclusion can be obtained: （1）Overpressure coefficient is close extensive between eccentric distance and far extensive between physical reference of storing material.（2）Under the same condition, the overpressure coefficient of same side wall will be minished with the increasing of discharge port.（3）For the same silo model, maximum pressure coefficient is related with eccentric distance, discharge port size and the position with the wall measured, and its value is greater than the calculated value of standard, because the overpressure coefficient calculation formula is only related with silo diameter and eccentric distance, and this is worth further discussion.

scholarly journals Estimation of Ultimate Strength of Continuous Stiffened Plate under Combined Thrust and Lateral Pressure

2002 ◽  
Vol 2002 (192) ◽  
pp. 697-705 ◽  
Author(s):  
Daisuke Yanagihara ◽  
Masahiko Fujikubo ◽  
Ryutaro Morita ◽  
Yuu Setoyama
Keyword(s):  
Ultimate Strength ◽  
Lateral Pressure ◽  
Stiffened Plate

Design and construction of a three-span continuous box girder model

2021 ◽  
Author(s):  
Ao Wang ◽  
Xudong Jian ◽  
Ye Xia ◽  
Yafei Wang ◽  
Guoqiang Jing ◽  
...  
Keyword(s):  
Basic Structure ◽  
Scale Model ◽  
Model Structure ◽  
Model Design ◽  
Element Analysis ◽  
Box Girder ◽  
Static And Dynamic Characteristics ◽  
Girder Bridge ◽  
Set Up ◽  
Physical Quantities

<p>Scale model experiments have been widely used in short- and medium-span bridge research, including B- WIM technology and vehicle-bridge interaction mechanisms and applications. A high simulative scale model can be used to verify the relevant theories and technologies effectively. In this paper, a 1:20 scale model has been set up according to a 3×20m three-span continuous box girder bridge prototype. The physical quantities of the scale model have been derived by similitude law to guide the model design. Appropriate materials, such as PMMA and lead blocks, have been adopted to form the basic structure, whose arrangements are detailed. Finite element analysis (FEA) is applied to calculate and compare the static and dynamic characteristics between real bridge and model structure. One experiment case of a B-WIM test integrating influence surface and computer vision has been carried out to illustrate the model's validity. The constructed model can be a useful platform for future researches and provide a reference for practitioners.</p><p><br clear="none"/></p>

scholarly journals Comparison the Stiffened Plate Deflection of T and RSF Stiffeners on Marine Structure Subjected Force and Pressure

2020 ◽  
Vol 2 (3) ◽  
pp. Manuscript
Author(s):  
Ratthakrit Reabroy
Keyword(s):  
Equivalent Stress ◽  
Vertical Direction ◽  
Model Design ◽  
Stiffened Plate ◽  
Element Analysis ◽  
Marine Structure ◽  
Maximum Equivalent Stress ◽  
New Type ◽  
Double Hull ◽  
Oil Tanker

This work aims to compare deflection in the vertical direction between the perfect T- and RSF-stiffeners, which subjected by forces and pressures. The geometry of stiffener models have studied the conventional T-stiffeners model design as the actual double hull oil tanker and the RSF-stiffeners are new type design based on T-stiffener specifications. The deflection theories of simply supported beam were studied by double integral method and moment area method. Finite Element Analysis (FEA) is used to design and simulation the deflection in vertical direction and maximum equivalent stress of stiffeners after subjected force and pressure within the same boundary condition. All stiffener models are obtained and result from FEA are shown in linear and nonlinear curves. The verification between theoretical and FEA results are in agreement. The load-deflection curves are shown that the performance of all RSF-stiffeners are greater than the conventional T-stiffener. 

The Small-Scale Distortion Model Design Method for Ultimate Strength Test of Hull Girder

2014 ◽  
Author(s):  
Chenfeng Li ◽  
Huilong Ren ◽  
Donghao Xu ◽  
Zeng Ji
Keyword(s):  
Large Scale ◽  
Design Method ◽  
Scale Model ◽  
Small Scale ◽  
Model Design ◽  
Hull Girder ◽  
Distortion Model ◽  
Section Modulus ◽  
Large Scale Model ◽  
Ultimate Moment

The objective of this paper is to develop a design method of small-scale distortion model for ultimate bearing capacity test. The ultimate moment is an important index of ship girder strength. Experimental analyses are regarded as the most straightforward and effective methods to predict ultimate moment of hull girder, especially full-scale and/or large-scale model testing. However, large-scale model test not only requires high loading capacity of test device, but it also costs a lot of human and material resources. Based on the similarity theory and failure mechanism of hull girder under bending, a small-scale distortion model design method is presented in this paper. In which, the transverse section is divided into several parts, such as main deck, middle deck, bottom and so on. Then, two similar criterions are required to follow. There are section modulus of each part and critical stress of main stiffened plats. The similar section modulus ensures a similar stress distribution of transverse section between model and real structures under bending; the similar critical stress ensures the same failure modes of stiffened plates. Based on this method, a real vessel is taken as example to design its small-scale (1/25 scale) distortion model. The simulating results indicate that this model design method is precise and reliable.

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