scholarly journals Analytical and finite element analysis tool for nonlinear membrane antenna modeling for astronomical applications

2021 ◽  
Author(s):  
Art Palisoc ◽  
Gerard Pardoen ◽  
Yuzuru Takashima ◽  
Aman Chandra ◽  
Siddharta Sirsi ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Tool ◽  
Element Analysis ◽  
Nonlinear Membrane

scholarly journals An Analysis Tool for the Installation of Submarine Cables in an S-Lay Configuration Including “In and Out of Water” Cable Segments

2020 ◽  
Vol 8 (1) ◽  
pp. 48 ◽  
Author(s):  
Vasileios A. Mamatsopoulos ◽  
Constantine Michailides ◽  
Efstathios E. Theotokoglou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Criterion ◽  
Limiting Factors ◽  
Radius Of Curvature ◽  
Analysis Tool ◽  
Analysis Software ◽  
Element Analysis ◽  
Analysis And Design ◽  
Custom Made

Today, the offshore oil and gas and wind power industry is a heavily regulated segment, and current standards have established restrictions which yield a very limited weather window for submarine cable installations due to experience with cable failure in bad weather. There are two main limiting factors in current practice during cable installation of an S-lay configuration: the design criterion for the minimum allowable radius of curvature in the touch down point and the avoidance of axial compression in the touch down zone. Accurate assessment of the cable integrity during offshore installation has drawn great attention and is related to the existing available analysis and design tools. The main purpose of this paper is to develop and propose a quick and easy custom-made analysis tool, which is able to export similar results as sophisticated finite element analysis software. The developed tool utilizes analytical equations of a catenary-type submarine structure extended to account for varying cross-sections with different weights and/or stiffnesses, as is the real practice. A comparative study is presented in this paper to evaluate the significance for the modeling of the “out of water” cable segment required for accurate safety factor quantification during a laying operation. The efficiency and accuracy of the proposed tool are proven through a validation study comparing the results and the computational effort and time with commercial finite element analysis software. The analysis error in the case of not modeling the “out of water” cable part is significant, especially in shallow water areas, which proves the importance of using the proposed analysis tool.

Hyper-Can: An Automated Design and Analysis Tool for Packaging-Specific Applications

1994 ◽  
Author(s):  
Nila D. Bhakuni ◽  
Robert E. Dick ◽  
Kurt A. Beiter
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Integrity ◽  
Analysis Tool ◽  
Structural Constraints ◽  
Element Analysis ◽  
Volume Calculation ◽  
Analysis Process ◽  
Standard Design ◽  
Metal Volume

Abstract The objective of beverage and food can design is to minimize cost while maintaining structural integrity. The package must satisfy requirements of internal pressure, drop pressure, and axial column load. Finite element analysis allows the designer to examine these structural constraints before prototypes are created so a larger design space can be examined in a shorter time. Hyper-Can was created as a tool in the Macintosh environment to automate the design and analysis process and reduce the design cycle time in a user-friendly way. Hyper-Can contains templates or families of designs of standard beverage and food can ends and bodies that calculate geometric information for finite element analysis pre-processing and fill and metal volume calculation using external Fortran code. Hyper-Can allows the designer to manipulate a standard design from the conceptual stage to analysis utilizing a simple graphical interface on the Macintosh.

Structural Design and Finite Element Analysis for Planet Wheel Gear System

2014 ◽  
Vol 556-562 ◽  
pp. 1174-1177
Author(s):  
Xiao Jing Li ◽  
Cheng Si Li ◽  
Di Wang ◽  
Dong Man Yu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Bending Strength ◽  
Design Method ◽  
Design Tool ◽  
Gear System ◽  
Scale Model ◽  
Analysis Tool ◽  
Element Analysis

Calculation the gear bottom bending strength and the gear surface contacting stress are traditional wheel gear design method. It takes a long time to design and works out parameters for gears system. Nowadays, the optimization design and reliability theory are introduced into modern engineering, we can make full use of the calculator tool to look for the best design parameter. Modern powerful finite element analysis software packages such as ANSYS are now not only an analysis tool but a design tool as well. This kind of technology makes planet wheel gear system design quantified precisely combining with physics principles in one. In the study, we designed a planet carrier with traditional method and built three dimensional full-scale model in Pro/E software. Based on finite element analysis, the finally result of stress distribution and deformation distribution is obtained. The results indicate that the design can meet the requirement.

State of the Art in Finite Element Analysis Technology

2012 ◽  
Vol 529 ◽  
pp. 205-209 ◽  
Author(s):  
Yang Liu ◽  
Xiao Jing Li ◽  
Yan Ping Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Design ◽  
New Technology ◽  
Design Tool ◽  
Practical Significance ◽  
Analysis Tool ◽  
Element Analysis ◽  
Software Packages ◽  
Physical Fields

Modern powerful finite element analysis software packages such as ANSYS are now not only an analysis tool but a design tool as well. The new technology makes the mechanical design quantified precisely combining with several physical fields in one. The paper briefly introduces the basic theories and basic steps of solutions of finite element analysis. After introducing the application of ANSYS software, the author proposes some effective solutions to this complicated engineering analytical, which is of practical significance of reference.

Online Software Tool for Predicting Weld Residual Stress and Distortion

2008 ◽  
Author(s):  
Yu-Ping Yang ◽  
Wei Zhang ◽  
Wei Gan ◽  
Shuchi Khurana ◽  
Junde Xu ◽  
...  
Keyword(s):  
Residual Stress ◽  
Finite Element Analysis ◽  
Finite Element ◽  
High Performance ◽  
Local Heating ◽  
Welding Parameters ◽  
Analysis Tool ◽  
Element Analysis ◽  
Weld Residual Stress ◽  
Welding Processes

Weld residual stress and distortion are inevitable during welding due to rapid local heating and cooling, high-temperature material reactions and weld-fixture effects. To predict weld residual stress and distortion, an engineer has to understand welding processes and the finite element analysis method. It is difficult for an engineer without finite element background to calculate the weld residual stress and distortion. With the development of weld modeling technology, automatic meshing generation, and high performance computation, a web-based analysis tool (E-Weld Predictor), was developed to predict weld residual stress and distortion. This allows an engineer to calculate the weld residual stress and distortion on line. The engineer does not need to have finite element analysis knowledge to perform the calculation. By providing welding parameters, defining a weld joint, giving geometry dimensions, and specifying a material, weld residual stress and distortion are automatically calculated in a remote high performance computer. A report will then be sent to the engineer to review. This paper introduces the development of E-Weld Predictor. The software structure, the theory, the implementation, and the validation of E-Weld Predictor are discussed in detail. It also shows the simulation process of applying this software in predicting temperature, microstructure, residual stress and distortion.

Methodology for Thermoplastic Umbilical Cross Section Analysis

2012 ◽  
Author(s):  
Danianderson Silva ◽  
Rosianita Balena ◽  
Rafael Lisbôa
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fiber Optics ◽  
Cross Section ◽  
Load Capacity ◽  
Critical Role ◽  
Analysis Tool ◽  
Element Analysis ◽  
Oil Exploitation ◽  
Sample Testing

Umbilicals are composite cables responsible for communication, control and power supply of offshore systems for oil exploitation. They can be composed of elements such as power and signal cables, hoses, tubes and fiber optics. Due to their critical role of providing control and power, umbilicals properties and operational limits must be correctly calculated in order to prevent failures, which can be costly and harmful to the environment. In order to address these needs, the main goal of this paper is to study the viability of using a finite element analysis tool for calculating the allowable bending radius (ABR) and the crush resistance of these cables. Using this tool, the engineer can have a sound basis for choosing the best cross section design at early stages of the project. The ABR is particularly important at the point where the umbilical touches the seabed, named touchdown point (TDP). This parameter limits the possible operational configurations for the cable and has a significant influence in its fatigue lifespan. Currently, the methods used to predict the ABR of thermoplastic umbilicals are mostly empirical and/or based on samples, but, as we go to deeper areas — as the recent ultra-deep water field discoveries in Brazil, Angola and others — more accurate ways of estimating this parameter are needed. Another effect of the higher water depths is the increase of tension on umbilicals during installation. Therefore, tensioners with higher load capacity are needed, requiring umbilicals with higher crush resistance. Sample testing during a qualification program is the main method to obtain the value of this parameter, but is costly. Due to its reliability and relative low costs compared to sample testing, the use of a finite element tool is an attractive alternative for obtaining these limits. In this paper, crush resistance and ABR will be calculated for thermoplastic umbilicals — the most common type of umbilical used in Brazilian offshore oil exploitation — and the results will be compared with the ones achieved by traditional methods. This comparison shows the applicability of using finite element analysis for determining these parameters.

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