The Roof Technology Research for LNG Cryogenic Storage Tank Based on ABAQUS

2014 ◽  
Vol 668-669 ◽  
pp. 294-297
Author(s):  
Jiang Hui Yang ◽  
Gong Sheng Yang ◽  
Zhong Zhi Ye
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Storage Tank ◽  
Structural Strength ◽  
Mode Analysis ◽  
Instability Mode ◽  
Technology Research ◽  
The Finite Element Method ◽  
Cryogenic Storage ◽  
Roof Strength

Based on the structural strength and stability theory, the paper introduce the basic principle and key considerations about the roof structural analysis, especially it should pay more attention to the concrete segment pouring effects. Taking the Tianjin LNG cryogenic storage tank as an example, which is independently finished by CNOOC, The finite element method is used for the roof strength and instability mode analysis, and study the failure sequence of strength damage and instability about the roof shell structure.

The Influence on Lining Moment of Tunnel under the Local Weakening of Structural Strength of Loess

2011 ◽  
Vol 250-253 ◽  
pp. 3872-3875
Author(s):  
Rong Jian Li ◽  
Wen Zheng ◽  
Juan Fang ◽  
Gao Feng Che
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Strength ◽  
Numerical Results ◽  
The Finite Element Method ◽  
Loess Area ◽  
Element Method

The influence of structural strength on the lining moment of tunnel should be properly evaluated in order to meet the engineering demand in loess area. It is essential to analyze and evaluate the lining moment of tunnel by means of the finite element method under the condition of the different local weakening of structural strength in loess. Firstly, some researches on the structural strength of loess tunnel are reviewed. Then, some different cases of the local weakening of structural strength in loess are analyzed in this paper. Numerical results not only indicate that the lining moment of tunnel tends to change obviously with the different local weakening of the structural strength, but also reveal that the weakening location of structural strength has important effect on the distribution and redistribution of the lining moment of tunnel.

The Simulation and Analysis of the New Type Large Vacuum Container Flange Welding Process

2014 ◽  
Vol 472 ◽  
pp. 671-676
Author(s):  
Bo Tao Liu ◽  
Yan Qi ◽  
Xiao Han ◽  
Shi Zeng Lv ◽  
Guo Feng Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Strength ◽  
Hollow Structure ◽  
Welding Process ◽  
The Finite Element Method ◽  
Material Consumption ◽  
Stiffness Property ◽  
New Type ◽  
The Stability

Flange is the key part of the large vacuum container and its stiffness property affects the sealing effect and the stability of the container. Large flange welding process will have a greater impact on its structural strength. In view of the traditional way of forming large vacuum container flange has problems that processing and manufacturing are difficult, more material consumption, and poor stiffness, a new type of flange structure was support. The new design has hollow structure and the welding process of cover flange was simulated through the finite element method. After that, the stress and the deformation were analyzed and then the proper welding scheme was optimized.

scholarly journals OPTIMASI STRUKTUR HELIDECK DENGAN VARIASI BEBAN HELIKOPTER

2020 ◽  
Vol 2 (3) ◽  
pp. 155-161
Author(s):  
Anwar Anwar ◽  
Reza Bachmid
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Yield Stress ◽  
Structural Strength ◽  
The Finite Element Method ◽  
Maximum Weight ◽  
Working Stress ◽  
Calculation Results ◽  
Helicopter Landing ◽  
Structure Strength

ABSTRACTHelideck is a helicopter landing field located on ships and offshore buildings. The helideck structure must have the strength to withstand the loads of the helicopter landing. The purpose of this study is to determine the maximum strength of the helideck structure. Helideck structure strength calculations used SACS structural strength software by performing a running analysis adopting the finite element method. The maximum calculation results value that the helideck structure can hold is the type of helicopter with a maximum weight of 155 kN with a working stress of 37,80 N/mm2 and an interaction value of (IR) 1. The helideck structure will encounter a yield stress or fracture with an IR value > 1.Keywords : Structure Strength, Helideck, Helicopter LoadABSTRAKHelideck merupakan lapangan pendaratan helikopter yang terdapat pada kapal dan bangunan lepas pantai, struktur helideck harus memiliki kekuatan yang mampu menahan beban pendaratan helikopter. Tujuan penelitian ini adalah untuk menghitung kekuatan maksimum dari struktur helideck, perhitungan kekuatan struktur helideck menggunakan software kekuatan struktur SACS dengan melakukan running analisis yg mengadopsi metode elemen hingga.hasil penelitian menunjukkan nilai maksimum yang dapat ditahan struktur helideck adalah tipe helikopter dengan berat maksimum 155 kN dengan tegangan kerja maksimum sebesar 37,80 N/mm2 dan nilai interaksi rasio (IR) 1. Struktur helideck akan mengalami tegangan leleh atau patah dengan nilai IR > 1.Kata kunci : Kekuatan Strutur, Helideck, beban helikopter

Finite-Difference Method Appliance to the Computation of Ground Additional Stress and Settlement of Storage Tank

2011 ◽  
Vol 243-249 ◽  
pp. 2638-2642
Author(s):  
Xu Dong Cheng ◽  
Wen Shan Peng ◽  
Lei Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method ◽  
Storage Tank ◽  
Three Dimensional ◽  
Additional Stress ◽  
The Finite Element Method ◽  
The Finite Difference Method

This paper adopts the Finite-difference method to research the distribution of ground additional stress and distortion in differently isotropic and non-isotropic foundation conditions, and uses the Finite-difference method to compare with the Finite-element method and the three-dimensional settlement method used by the code. Through comparative analysis, the reliability and superiority of Finite-difference method used for calculating ground additional stress and settlement are justified.

Research on The Internal Force and The Normal Displacement of The Storage Tank under Earthquake Action

2012 ◽  
Vol 204-208 ◽  
pp. 2618-2622
Author(s):  
Yang Yu ◽  
Hai Wei Guan ◽  
Yun Feng Zhang ◽  
Zhao Qing Yuan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Storage Tank ◽  
Petrochemical Industry ◽  
Internal Force ◽  
Normal Displacement ◽  
The Finite Element Method ◽  
Storage Container ◽  
Liquid Storage ◽  
Earthquake Action

Vertical storage tank is widely used as a liquid storage container in the oil deposit, petrochemical industry and related enterprise. It always stores inflammable, explosive medium. The consequences are very serious, when the earthquake disaster occurs. In this paper, we build models of model tank and 30,000 m3 tanks with the finite element method, and analyze their vibration characteristics and seismic response. We wish that the research can provide fundamental data for the similar studies.

Seismic Response Analysis of the Tank by Base Isolation

2013 ◽  
Vol 772 ◽  
pp. 819-822
Author(s):  
Yang Yu ◽  
Lei Wang ◽  
Yun Feng Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Seismic Response ◽  
Storage Tank ◽  
Base Isolation ◽  
Response Analysis ◽  
The Finite Element Method ◽  
Seismic Response Analysis ◽  
Earthquake Disaster ◽  
Economic Construction

The storage tank plays a more and more important role in economic construction and the development. It always stores inflammable, explosive medium. The consequences are very serious, when the earthquake disaster occurs. In this paper, we build models of model tank and 20,000 m3 tanks with the finite element method, and analyze their seismic response between the former structure and the isolatied structure. We wish that the research can provide fundamental data for the similar studies.

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