scholarly journals Parametric Studies of Square Solar Sails Using Finite Element Analysis

2004 ◽  
Author(s):  
David Sleight ◽  
Danniella Muheim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solar Sails ◽  
Element Analysis ◽  
Parametric Studies

scholarly journals A Finite Element Study on Compressive Resistance Degradation of Square and Circular Steel Braces under Axial Cyclic Loading

2021 ◽  
Vol 11 (13) ◽  
pp. 6094
Author(s):  
Hubdar Hussain ◽  
Xiangyu Gao ◽  
Anqi Shi
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cyclic Loading ◽  
Slenderness Ratio ◽  
Hysteretic Behavior ◽  
Element Analysis ◽  
Section Shape ◽  
Axial Cyclic Loading ◽  
Global Buckling ◽  
Parametric Studies

In this study, detailed finite element analysis was conducted to examine the seismic performance of square and circular hollow steel braces under axial cyclic loading. Finite element models of braces were constructed using ABAQUS finite element analysis (FEA) software and validated with experimental results from previous papers to expand the specimen’s matrix. The influences of cross-section shape, slenderness ratio, and width/diameter-to-thickness ratio on hysteretic behavior and compressive-tensile strength degradation were studied. Simulation results of parametric studies show that both square and circular hollow braces have a better cyclic performance with smaller slenderness and width/diameter-to-thickness ratios, and their compressive-tensile resistances ratio significantly decreases from cycle to cycle after the occurrence of the global buckling of braces.

An Efficient Approach for the Three-Dimensional Finite Element Analysis of Tires

1988 ◽  
Vol 16 (4) ◽  
pp. 249-273 ◽  
Author(s):  
J. P. Chang ◽  
K. Satyamurthy ◽  
N. T. Tseng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Initial Conditions ◽  
Three Dimensional ◽  
Element Analysis ◽  
Finite Element Program ◽  
Automobile Tire ◽  
Cpu Time ◽  
Parametric Studies ◽  
Time Required

Abstract The finite element analysis of tires under a vertical footprint load requires the use of three-dimensional models. The excessive CPU time required for such models, especially when the tire construction is considered in detail, makes parametric studies difficult and time-consuming. Therefore, one of the principal objectives of finite element program development is to provide an efficient tool for the three-dimensional analysis of tires so that it can be integrated into the design process effectively. In the present study, a systematic finite element procedure is developed for solving loaded tire problems. The principal elements of this procedure are an efficient pre-processor for input generation, a multipoint constraint option to allow the user to exploit any existing symmetry in the problem, and a procedure for generating initial conditions from axisymmetric analyses. This procedure can be used to conduct parametric studies on loaded tires by using a rather coarse mesh and large load steps, thus leading to a significant reduction in CPU time, with a minimum sacrifice in solution accuracy. The efficiency of this procedure is illustrated with the analysis of a radial automobile tire.

Large Deformation Finite Element Analysis of the Anchor Line Embedded in Seabed Soils

2013 ◽  
Author(s):  
Yanbing Zhao ◽  
Haixiao Liu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Large Deformation ◽  
Fem Simulation ◽  
Frictional Coefficient ◽  
Element Analysis ◽  
Attachment Point ◽  
Incremental Methods ◽  
Offshore Engineering ◽  
Parametric Studies

For most anchors in offshore engineering, such as the anchor pile and the drag anchor, the attachment point will generally be significantly below the seafloor surface, and therefore a portion of the anchor line will be deeply embedded in seabed soils. Complicated interaction happens between the anchor and the embedded anchor line, and the tension at the attachment point and the reverse catenary shape of embedded anchor line play a key role in assessing the capacity and reliability of the anchorage system. Previous investigations on the force distribution and the reverse catenary shape of embedded anchor line involve numerical incremental methods, closed-form theoretical expressions and laboratory tests. In the present work, a large deformation finite element analysis using the Coupled Eulerian-Lagrangian technique is developed to investigate the tension and profile of embedded anchor line. Parametric studies are performed to evaluate the effects of the shear strength of clay, depth of attachment point, diameter of embedded anchor line, self weight of soil, self weight of anchor line, and frictional coefficient between the embedded anchor line and soil. By comparing with theoretical and numerical integration solutions, the FEM simulation results are well verified. The present study demonstrates that the CEL technique is effective for simulating the anchor line-soil interactional problems.

Evaluation of Adhesive T-Joint Using Finite Element Analysis

2015 ◽  
Vol 786 ◽  
pp. 37-42 ◽  
Author(s):  
B. Izzawati ◽  
Mohd Afendi ◽  
S. Nurhashima ◽  
A. Nor ◽  
Abdul Rahman Abdullah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Adhesive Layer ◽  
Effect Of Temperature ◽  
Fe Model ◽  
Stress Distributions ◽  
Adhesive Properties ◽  
Element Analysis ◽  
Parametric Studies ◽  
And Behavior

This study evaluates the effect of temperature upon adhesive properties and behavior of adhesively bonded T-joint. Finite element analyses established the effect of this parameter on the durability joint and stress distribution within the adhesive layer. A series of temperatures and stress analyses using finite element analysis (FEA) has been conducted in the T-joint configuration for this purpose. The parametric studies on the FE model revealed that stress distributions are sensitive to the changes in adhesive properties due to changes in temperature. In general, stresses were reduced with changes in the temperature which resulted in the ability of the adhesive layer to undergo plastic deformation.

Elasto-plastic finite element analysis of welded truss connections

1982 ◽  
Vol 9 (3) ◽  
pp. 399-412 ◽  
Author(s):  
William Chung-Ping Lau ◽  
John L. Dawe
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Parameters ◽  
Element Analysis ◽  
Finite Element Technique ◽  
Design Office ◽  
Parametric Studies ◽  
Thickness Variations ◽  
Element Technique ◽  
Simple Interaction

A finite element technique based on an incremental tangent stiffness method is employed herein to analyze the behavior of welded truss connections subjected to combined tension and shear. A computer program named ELAPLAS (ELAsto-PLAStic finite element analysis) is developed to simulate the load–deformation behavior and to predict the ultimate tensile capacity of a structural tee in a welded truss joint subjected to a prescribed transverse shear load. Analytical studies were carried out to investigate the interaction of tension and shear in welded truss connections. The analytical results obtained are compared with available test data to verify the validity of the proposed finite element technique. Results of parametric studies are presented to illustrate the significance of various design parameters in welded truss connections. Such parameters as material properties, thickness variations of structural tee web and flange, and the truss configurations are investigated. As a result of the present work, simple interaction equations of combined tension and shear are developed and suggested for design office use.

A Method to Calculate Volumetric Integral Averages From a Finite Element Solution

2000 ◽  
Author(s):  
Echo M. Miller ◽  
Peter S. Donzelli ◽  
Robert L. Spilker
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Articular Cartilage ◽  
Mechanical Behavior ◽  
Material Property ◽  
Finite Element Solution ◽  
Element Solution ◽  
Element Analysis ◽  
Parametric Studies ◽  
Biphasic Finite Element

Abstract The inhomogeneity and anisotropy of articular cartilage has been experimentally verified, but little has been done to quantify the effects of such material variation on mechanical behavior. We present a method to calculate volume-averaged quantities over tissue regions, used in conjunction with a 3D biphasic finite element analysis. Such average quantities can be used in parametric studies of different material property models, readily permitting statistical comparisons that are difficult with point-wise quantities.

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