Numerical Simulation of Polyurethane Pad Punching Process

2014 ◽  
Vol 941-944 ◽  
pp. 1817-1821
Author(s):  
Xiao Xiong Wang ◽  
Jing Liu ◽  
Jing Tao Han ◽  
Qian Liu
Keyword(s):  
Numerical Simulation ◽  
Cross Section ◽  
Shear Failure ◽  
Sheet Thickness ◽  
Control Parameters ◽  
Arbitrary Lagrangian Eulerian ◽  
Adaptive Meshing ◽  
Finite Element Program ◽  
Element Program ◽  
Punching Process

A numerical simulation was conducted to investigate the effect of the punching clearance, the thickness of sheet, and the hardness of polyurethane pad on the process of punching by finite element program ABAQUS which based on shear failure criterion and arbitrary Lagrangian-Eulerian adaptive meshing method. And the collapse height dimension and width dimension tendency of the sheet under different control parameters was analyzed after punching process according to this simulation result. The results show that the collapse height dimension and width dimension decreased with the increase of the polyurethane hardness, it means the cross section quality perspicuously has been increased; the collapse height dimension and width dimension decreased with the increasing of the sheet thickness; while the influence of the punching gap is indistinctive.

Mechanical Property Analysis and Numerical Simulation of Honeycomb Sandwich Structure’s Core

2013 ◽  
Vol 631-632 ◽  
pp. 518-523 ◽  
Author(s):  
Xiang Li ◽  
Min You
Keyword(s):  
Numerical Simulation ◽  
Elastic Constants ◽  
Sandwich Structure ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Finite Element Program ◽  
Honeycomb Sandwich ◽  
Calculation Results ◽  
Element Program ◽  
Typical Satellite

Owing to the lack of a good theory method to obtain the accurate equivalent elastic constants of hexagon honeycomb sandwich structure’s core, the paper analyzed mechanics performance of honeycomb sandwich structure’s core and deduced equivalent elastic constants of hexagon honeycomb sandwich structure’s core considering the wall plate expansion deformation’s effect of hexagonal cell. And also a typical satellite sandwich structure was chose as an application to analyze. The commercial finite element program ANSYS was employed to evaluate the mechanics property of hexagon honeycomb core. Numerical simulation analysis and theoretical calculation results show the formulas of equivalent elastic constants is correct and also research results of the paper provide theory basis for satellite cellular sandwich structure optimization design.

Predicting the behaviour of storage cells in early Condeep structures

2016 ◽  
Vol 43 (7) ◽  
pp. 643-656 ◽  
Author(s):  
Amr I.I. Helmy ◽  
Michael P. Collins
Keyword(s):  
Cell Wall ◽  
Size Effect ◽  
Shear Failure ◽  
Water Pressure ◽  
Scale Model ◽  
Finite Element Program ◽  
3 Dimensional ◽  
Stress Strain Relation ◽  
Element Program ◽  
Storage Cells

RASP, also now called VecTor6, is a nonlinear finite element program for the analysis of reinforced concrete structures that uses 3-dimensional stress–strain relation of cracked concrete based on the modified compression field theory. RASP was used to predict the behavior of a 3-dimensional 1:13 scale model of a typical upper dome-cell wall junction of a storage cell in an early Condeep structure. It predicted a flexure-shear failure at the top of the cell wall when it was subjected to a pressure differential equivalent to 129–134 m head of water. Yet, there was deviation between the theoretical and the observed response of the model since the analysis ignored the detrimental effect of water pressure in the cracks. Before applying the results of the pressure test on the scale model to the prototype structure the size effect in shear was examined. It was concluded that because the failure was triggered by flexural yielding the size effect in shear was not significant for this case.

Ratcheting Study of Pressurized Straight Z2CND18.12N Austenitic Stainless Steel Pipe under Reversed Bending

2013 ◽  
Vol 798-799 ◽  
pp. 235-238
Author(s):  
Xiao Hui Chen ◽  
Xu Chen
Keyword(s):  
Numerical Simulation ◽  
Reasonable Agreement ◽  
Straight Pipe ◽  
Finite Element Program ◽  
User Subroutine ◽  
Stainless Steel Pipe ◽  
Element Program ◽  
Simulation And Experiment ◽  
Fortran Language ◽  
Combined Hardening

The current paper reports the results of a numerical simulation and experiment of ratcheting behavior of pressurized straight pipe under reversed bending. A nonlinear isotropic/ kinematic (combined) hardening model is implemented into finite element program ANSYS by writing own user subroutine in FORTRAN language. The results of the numerical simulation is compared with experimental data. A reasonable agreement is noticed between the experimental and the numerical results for the ratcheting behavior of the pressurized straight pipe subjected to reversed bending.

The torsional stiffness of involute spur gears

2004 ◽  
Vol 218 (1) ◽  
pp. 131-142 ◽  
Author(s):  
J Wang ◽  
I Howard
Keyword(s):  
Finite Element ◽  
Gear Tooth ◽  
Torsional Stiffness ◽  
Spur Gears ◽  
Adaptive Meshing ◽  
Mesh Stiffness ◽  
Finite Element Program ◽  
Tooth Stiffness ◽  
Element Program ◽  
The Individual

This paper presents the results of a detailed analysis of torsional stiffness of a pair of involute spur gears in mesh using finite element methods. Adaptive meshing has been employed within a commercial finite element program to reveal the detailed behaviour in the change over region from single- to double-tooth contact zones and vice versa. Analysis of past gear tooth stiffness models is presented including single- and multitooth models of the individual and combined torsional mesh stiffness. The gear body stiffness has been shown to be a major component of the total mesh stiffness, and a revised method for predicting the combined torsional mesh stiffness is presented. It is further shown tha the mesh stiffness and load sharing ratios will be a function of applied load.

Numerical Simulation on the Surface Subsidence Effect during Shield Tunneling Construction

2011 ◽  
Vol 299-300 ◽  
pp. 110-113
Author(s):  
Hai Xia Sun ◽  
Hai Yu Wu ◽  
Si Li Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Surface Deformation ◽  
Influence Factors ◽  
Surface Subsidence ◽  
Shield Tunnel ◽  
Shield Tunneling ◽  
Finite Element Program ◽  
Element Program ◽  
Numerical Simulation Methods

Against the background of shenyang subway shield tunnel construction, the method of numerical simulation methods are used to analyze the factors of surface subsidence caused by shield construction comprehensively, and the universal finite element program ABAQUS is used to establish mechanical model depended on comprehensive consideration the influence factors of soil warehouses pressure, seepage and groundwater. A dynamic finite element simulation of shield advance process and conclude the surface deformation rule of soil are studied.

First Results of a 3D Pull-Out Model of Steel Anchors in Fired-Clay Bricks

2019 ◽  
Vol 817 ◽  
pp. 514-519 ◽  
Author(s):  
Francesco Finelli ◽  
Angelo Di Tommaso ◽  
Cristina Gentilini
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Numerical Model ◽  
Experimental Results ◽  
Clay Brick ◽  
Finite Element Program ◽  
Clay Bricks ◽  
Pull Out ◽  
First Results ◽  
Element Program

The paper reports the results of a numerical simulation performed to study the experimental pull-out behavior of twisted steel connectors inserted in fired-clay brick units. The experimental results obtained in a previous campaign are used to calibrate a 3D refined numerical model developed by means of the finite element program Abaqus. The numerical model is tuned to accurately reproduce the experimental results in terms of loads and bar displacements.

scholarly journals ANALYSIS OF THE STRENGTH OF A REINFORCED CONCRETE COMPRESSIVE COLUMN UNDER THE TEMPERATURE OF FIRE / GAISRO TEMPERATŪROS VEIKIAMŲ GNIUŽDOMŲJŲ GELŽBETONINIŲ KOLONŲ ĮTEMPIŲ SKERSPJŪVYJE PASISKIRSTYMO ANALIZĖ

2012 ◽  
Vol 4 (4) ◽  
pp. 320-325
Author(s):  
Aidas Jokūbaitis ◽  
Arnoldas Šneideris
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Cross Section ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Finite Element Program ◽  
Metallic Shell ◽  
Element Program ◽  
Characteristic Stress

The article discusses principles calculating resistance of a reinforced concrete column to fire. The paper provides column calculation models, the main characteristics of materials and characteristic stress set points applying finite element program SolidWorks. A comparative analysis of stresses in the cross-section of the reinforced concrete column and the reinforced concrete column strengthened with a metallic shell is made. Santrauka Analizuojami gelžbetoninės kolonos atsparumo ugniai skaičiavimo principai. Pateikiami baigtinių elementų programa SolidWorks sudaryti kolonų skaičiuojamieji modeliai, pagrindinės medžiagų charakteristikos ir būdingi įtempių nustatymo taškai. Atliekama gelžbetoninės ir sustiprintos metaliniu apvalkalu gelžbetoninės kolonos įtempių skerspjūvyje lyginamoji analizė.

Distribution Characteristics and Influence Factors of Soil Arching Ring behind Stabilizing Piles

2015 ◽  
Vol 744-746 ◽  
pp. 474-478
Author(s):  
Yong Jiang Shen ◽  
Ming Yang ◽  
Hai Hao Cui ◽  
Zheng Liang Xiang ◽  
Yao Zhuang Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Stress Distribution ◽  
Influence Factors ◽  
Distribution Characteristics ◽  
Soil Arching ◽  
Finite Element Program ◽  
Stabilizing Piles ◽  
Element Program ◽  
Soil Arch

Soil arch plays an important role in the landslides reinforced by stabilizing piles . A method was presented to determine the range of soil arching ring. The method proposed was achieved by finite element program and the stress distribution of soil arch with different landslide thrust was analyzed. The results show that the thickness of soil arching ring is variable. The mid-span section of soil arching ring is the minimum. The arch ring becomes thicker from the mid-span axis to the arch feet. With the increase of landslide thrust, the soil arching ring becomes thicker and thicker. At last ,the monitoring data of a model test is studied and the results are consistent with that of numerical simulation.

Numerical Simulations of Pressurized Elbow under Reversed In-Plane Bending

2013 ◽  
Vol 785-786 ◽  
pp. 16-19 ◽  
Author(s):  
Xiao Hui Chen ◽  
Xu Chen
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Cyclic Loading ◽  
Numerical Simulations ◽  
Prediction Accuracy ◽  
Finite Element Program ◽  
User Subroutine ◽  
Element Program ◽  
Fortran Language ◽  
Plane Bending

The paper compares numerical simulation with experimental results of pressurized elbow piping subjected to reversed in-plane bending in elastoplastic domain. The modified AbdelKarim-Ohno model is implemented into finite element program ANSYS by writing own user subroutine in FORTRAN language. The modified AbdelKarim-Ohno model may improve the prediction accuracy of ratcheting behavior of pressurized elbow under cyclic loading.

Study on Construction of Long Span and Soft Rock Tunnel with Numerical Simulation

2013 ◽  
Vol 438-439 ◽  
pp. 964-967
Author(s):  
Bin Zhu ◽  
Xiao Jing Shi
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Soft Rock ◽  
Tunnel Excavation ◽  
Finite Element Program ◽  
Factors Affecting ◽  
Long Span ◽  
Element Program ◽  
Main Factors ◽  
Rock Tunnel

With characteristics of the long span and soft rock tunnel, this paper analyzes the main factors affecting tunnel stable on the basis of the way of tunnel excavation method. The large finite element program is used in research of a tunnel, with a numerical simulation of two different way, top heading and bench method and double side drift method. From the result of stress field and displacement field of the tunnel , some useful conclusion are obtained, that double side drift method is appropriate for this kind of soft rock tunnel.

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