Ccrushing of a Steel Tube Umbilical (Stu) Cable During Laying Operation: A Finite Element Method Assessment at the Entry/exit Regions of Tensioner Shoes

2021 ◽  
Author(s):  
William Guttner ◽  
Caio C. P. Santos ◽  
Celso Pesce
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Steel Tube ◽  
Element Method

Experimental and numerical investigation of wrinkling and tube ovality in the rotary draw bending process

2019 ◽  
Vol 233 (16) ◽  
pp. 5568-5584 ◽  
Author(s):  
R Safdarian
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Experimental Tests ◽  
Steel Tube ◽  
Numerical Results ◽  
The Finite Element Method ◽  
Rotary Draw Bending ◽  
Bending Process ◽  
Draw Bending ◽  
Element Method

The tube wrinkling, ovality, and fracture are the main defects in the rotary draw bending process, which happen by incorrect selection of process parameters. In the present study, the wrinkling, fracture, and ovality of BS 3059 steel tube in the rotary draw bending were investigated using the experimental tests and the finite element method. The numerical results were verified using the experimental tests for tube ovality prediction. The tube fracture was predicted using the Gurson–Tvergaard–Needleman damage model in the rotary draw bending numerical simulations. The design of experiment based on the response surface method and the finite element method was used to investigate the effects of rotary draw bending parameters such as boosting velocity of pressure die, mandrel position, number of balls, and pressure of pressure die on the wrinkling, fracture, and tube ovality. The experimental and numerical results indicated that the mandrel position was one of the main parameters, which influence the tube ovality. The tube ovality and wrinkling increased with the increase in the mandrel position.

Time-History Analysis of Seismic Response for the Concrete-Filled Steel Tubular Wind Turbine Tower Based on Finite Element Method

2010 ◽  
Vol 163-167 ◽  
pp. 2176-2180
Author(s):  
Yang Wen ◽  
Fei Zhou
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wind Turbine ◽  
Time History ◽  
Steel Tube ◽  
Time History Analysis ◽  
Concrete Filled Steel Tube ◽  
Wind Turbine Tower ◽  
History Analysis ◽  
Element Method

In the article based on the geometric characteristics of the tower and force characteristics, the author designs the concrete-filled steel tube (CFST) 3 limbs column tower, and establishes finite element model of the tower. We carry on time history analysis of the concrete-filled steel tubular wind turbine tower based on finite element method when the earthquake wave is different. Under rare earthquake, the majority bars of the concrete-filled steel tube 3 limbs column tower are in the elastic stage, only a small number of bars in the top and the bottom are into the plastic phase. The post-seismic displacement at the top of tower is 1.1m which is slightly less than the tower height of 1 / 50 (1.26m) and meets the seismic requirements of the region. The analytical result may provide the foundational test data and advice for the design of the CFST wind turbine tower.

Analysis of Steel-Concrete Composite Structure Element

2011 ◽  
Vol 94-96 ◽  
pp. 402-405
Author(s):  
Chang Zhou Dong ◽  
Chen Qu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Composite Structure ◽  
Stiffness Matrix ◽  
Shell Element ◽  
Steel Tube ◽  
Thin Wall ◽  
Block Element ◽  
Isoparametric Element ◽  
Element Method

The structure of eccentric degenerated 3-D shell element of thin-wall steel tube concrete composite structure and the connection with 3-D block isoparametric element has been discussed using finite element method. Without considering the intensity limit of delamination damage of the two materials, an integrated stiffness matrix is formed with the combination of stiffness matrix of steel-wall shell element and that of concrete spatial block element. In order to make the superposition rule may be used at the joint of 8-node curved shell element and 20-node block element, an eccentric 8-node shell element is constructed.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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