Structural Design of Railway Trackbeds: Relative Effects of Various Factors

2011 ◽  
Author(s):  
J. G. Rose ◽  
M. C. Trella ◽  
N. K. Agarwal
Keyword(s):  
Finite Element ◽  
User Interface ◽  
Graphical User Interface ◽  
Structural Design ◽  
Computer Language ◽  
Damage Analysis ◽  
Relative Importance ◽  
Performance Requirements ◽  
Design Program ◽  
The Individual

Layer-elastic, finite-element computer programs are available for performance-based structural design and analysis of railway trackbeds. This paper utilizes the KENTRACK design program. It is possible to consider the fatigue lives of the various layers relative to the imposed wheel loads, tonnages, environmental conditions and other factors. The service lives of the individual components of the trackbed are predicted by damage analysis for various combinations of traffic loadings, accumulated tonnages, subgrade support, and component layer properties and thicknesses. The results are presented graphically. The latest version, KENTRACK 3.0, is utilized. It is coded in C#.NET a popular computer language for achieving accuracy and efficiency. The graphical user interface in the KENTRACK 3.0 provides a technique to analyze trackbeds as structures. It is possible with KENTRACK 3.0 to select individual trackbed layers and associated thicknesses to satisfy roadbed and trackbed performance requirements. In addition, it is possible to performance-rank different track sectional designs based on the relative importance of the particular track section and track type. The types of roadbed and trackbed configurations are selected to meet each of the various performance ranks.

KENTRACK, a Performance-Based Layered Elastic Railway Trackbed Structural Design and Analysis Procedure: A Tutorial

2010 ◽  
Author(s):  
Jerry G. Rose ◽  
Nithin K. Agarwal ◽  
Justin D. Brown ◽  
Neeharika Ilavala
Keyword(s):  
Structural Design ◽  
Computer Language ◽  
Damage Analysis ◽  
Relative Importance ◽  
Sample Design ◽  
Performance Requirements ◽  
Compressive Stresses ◽  
Design Calculations ◽  
The Individual ◽  
A Performance

KENTRACK is a layer elastic finite element based computer program that can be utilized for a performance-based structural design and analysis of railway trackbeds. Kentrack was initially developed to analyze traditional all-granular layered trackbeds and asphalt layered trackbeds. The versatility was recently expanded to analyze trackbeds containing a combination of granular and asphalt layers. The principle factor in the analysis is to limit vertical compressive stresses on the subgrade. In addition, it is possible to consider the fatigue lives of the various layers relative to the effects of wheel loads, tonnages, environmental conditions and other factors. The service lives of the individual components of the trackbed are predicted by damage analysis for various combinations of traffic, tonnages, subgrade support, component layer properties and thicknesses. The latest version, KENTRACK 3.0, is coded in C#.NET, a popular computer language for achieving accuracy and efficiency. The graphical user interface in the KENTRACK 3.0 provides a technique to analyze trackbeds as structures. It is possible with KENTRACK 3.0 to select trackbed layers and associated thicknesses to satisfy roadbed and trackbed performance requirements. In addition, it is possible to performance-rank different track sectional designs based on the relative importance of the particular track section and track type. The types of roadbed and trackbed configurations are selected to meet each of the various performance ranks. The various steps involved in the calculations are highlighted during the tutorial phase of a sample design calculations and analysis.

Changing Technology in Control Room Design: Is One Graphical Interface Worth 1000 Indicators?

1995 ◽  
Vol 39 (21) ◽  
pp. 1435-1439 ◽  
Author(s):  
Leon D. Segal ◽  
Anthony D. Andre
Keyword(s):  
User Interface ◽  
Wind Tunnel ◽  
Graphical User Interface ◽  
Graphical Interface ◽  
Control Room ◽  
Analog To Digital ◽  
Room Design ◽  
Design Program ◽  
Actual Content ◽  
Different Levels

This paper presents a review of human factors (HF) efforts toward the introduction of a graphical user interface (GUI) designed for operators in the control room of the world's largest wind tunnel at NASA's Ames Research Center, located in Moffett Field, California. Design of GUIs for the control room of this facility involved application of HF principles at many different levels of the design program: the design process itself, the environmental context for design, and the actual content of the graphical interface. This paper presents the particular challenges associated with transforming a control room from analog to digital, as well as the specific advantages and drawbacks of using GUIs in the context of large, multi-operator, environments.

Vehicle Display and Control Terminal Design Based on the MPC5121e and Embedded Linux

2014 ◽  
Vol 1006-1007 ◽  
pp. 962-966
Author(s):  
Zhe Jiang ◽  
Li Zhen Zhao ◽  
Xiao Yu Yang ◽  
Yong Shan Wang ◽  
Yi Man ◽  
...  
Keyword(s):  
Operating System ◽  
User Interface ◽  
Graphical User Interface ◽  
Embedded Linux ◽  
Hardware Platform ◽  
Design Program ◽  
Terminal Design ◽  
Control Terminal ◽  
New Generation ◽  
And Control

The design program of Vehicle Display and Control Terminal was introduced, it was based on the Embedded Linux which developed on the MPC5121e hardware platform. Through kernel cutting and transplanting of the Embedded Linux operating system, and transplanting the new generation of the Altia Designer to the MPC5121e hardware platform, the graphical user interface software of Vehicle Display and Control Terminal was developed successfully.

scholarly journals Determination of Subgrade Reaction Coefficients and Spring Stiffnesses for a Combined Pile Raft Foundation (CPRF) by Means of a Cluster Analysis

2021 ◽  
Vol 29 (2) ◽  
pp. 16-29
Author(s):  
Szilárd Kanizsár
Keyword(s):  
Cluster Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Constitutive Models ◽  
Fem Modeling ◽  
Finite Element Software ◽  
Design Program ◽  
Design Software ◽  
Soil Behaviour ◽  
Raft Foundations

Abstract An analysis of combined piled raft foundations could be performed by means of a special geotechnical finite element software that utilizes 3D modeling and advanced constitutive models for the soil. However, a foundation is generally included in the structural models in a structural design program. The least advanced part of finite element software that has been developed for structural FEM modeling are the tools used for modeling behaviour. A method is required with which the input parameters of the structural design software that are used for modeling the soil structure interaction as well could be determined so that the results calculated by means of a geo-technical software that approximates realistic soil behaviour the best can be reproduced by structural design software as well. The procedure outlined in this paper by means of a cluster analysis provides a tool for a substantial and innovative improvement in subsoil modeling, to which not enough attention is generally paid in the structural FEM software, thereby resulting in a reduced amount of work associated with the task of inputting data.

Graphical User Interface as a Preliminary Structural Design Educative Tool for a Vessel

2019 ◽  
Author(s):  
Cristian Michel Salazar-Dominguez ◽  
Alondra Donaji Dominguez-Barrientos ◽  
Juan Carlos Soler-Balcazar ◽  
Carlos Arturo Ceron-Alvarez ◽  
Francisco Lopez-Huerta ◽  
...  
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Structural Design

Educational Software for Stress Analysis of an Aircraft Fuselage

2011 ◽  
Vol 110-116 ◽  
pp. 3054-3062
Author(s):  
J.S. Mohammed Ali ◽  
Izyan Liyana Mustafa Kamal ◽  
Nurhuda Ismail
Keyword(s):  
User Interface ◽  
Stress Analysis ◽  
Graphical User Interface ◽  
Learning Process ◽  
Structural Design ◽  
Educational Software ◽  
Analysis Software ◽  
Aircraft Structures ◽  
Aircraft Fuselage ◽  
Teaching Learning

A stress analysis software based on MATLAB graphical user interface (GUI) has been developed. The developed software can be used to estimate internal loads on a fuselage and to compute the stresses at any point along the length of the fuselage of a given aircraft. The generalized formulation allows user to perform stress analysis even on tapered fuselages. The software is expected to be a useful tool for effective teaching learning process of courses on aircraft structures and aircraft structural design.

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