scholarly journals Modelling of Nonuniform RC Structures for Computer Aided Design

1994 ◽  
Vol 16 (2) ◽  
pp. 89-95
Author(s):  
Muhammad Taher Abuelma'atti
Keyword(s):  
Simple Model ◽  
Computer Aided Design ◽  
Rc Structures ◽  
Analysis And Design ◽  
Hyperbolic Sine ◽  
Hyperbolic Cosine ◽  
Computer Aided Analysis ◽  
Computer Aided ◽  
Aided Design

A simple model for nonuniform distributed RC structures is presented. The model consists of three passive elements only and can be used for modelling nonuniform distributed RC structures involving exponential, hyperbolic sine squared, hyperbolic cosine squared and square taper geometries. The model can be easily implemented for computer-aided analysis and design of circuits and systems comprising nonuniform distributed RC structures.

Enhancing Undergraduate Mechanical Engineering Education With Computer Aided Engineering

2005 ◽  
Author(s):  
Alexandra Schonning ◽  
Daniel Cox
Keyword(s):  
Finite Element ◽  
Computer Aided Design ◽  
Mechanical Engineering ◽  
Computer Aided Engineering ◽  
Modeling And Analysis ◽  
Computer Aided Analysis ◽  
Computer Aided ◽  
Analysis Design ◽  
Aided Design ◽  
The University

This paper addresses the importance of integrating Computer Aided Engineering (CAE) software and applications in the mechanical engineering curriculum. Computer aided engineering tools described include Computer-Aided Design, Computer-Aided Manufacturing, and Computer-Aided Analysis tools such as finite element (FE) modeling and analysis. The integration of CAE software tools in the curriculum is important for three primary reasons: it helps students understand fundamental engineering principles by providing an interactive and visual representation of concepts, it provides students an opportunity to explore their creative ideas and designs while keeping prototyping costs to a minimum, and it teaches students the valuable skill of more efficiently designing, manufacturing and analyzing their products with current technology making them more marketable for their future engineering careers. While CAE has been used in the classroom for decades, the mechanical engineering program at the University of North Florida is making an aggressive effort in preparing the future engineering workforce through computer-aided project-centered education. The CAE component of this effort includes using CAE software when teaching stress, strain, dynamics, kinematics, vibrations, finite element modeling and analysis, design and design for manufacturing, manufacturing and technical communication concepts. This paper describes CAE projects undertaken in several of the mechanical engineering courses at UNF in an effort to share creative teaching techniques for others to emulate.

scholarly journals Three-Level Inverter Control Techniques: Design, Analysis, and Comparisons

2021 ◽  
Vol 27 (3) ◽  
pp. 26-37
Author(s):  
Dan Selisteanu ◽  
Monica Roman ◽  
Lucian Mandache ◽  
Razvan Prejbeanu ◽  
Sergiu Ivanov ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Asynchronous Motor ◽  
Quality Criteria ◽  
Operating Conditions ◽  
Design Tools ◽  
Analysis And Design ◽  
Control Techniques ◽  
Linear Load ◽  
Computer Aided ◽  
Aided Design

This work addresses the analysis and design of various Proportional-Integral-Derivative (PID) control techniques for a three-level inverter. Multilevel power converters are modern and basic elements of high-voltage electric drive and power supply systems. By using simulations and specific computer-aided design tools, the overall functional characteristics of multilevel converters, as well as the electrical demands of the components, can be accurately assessed to obtain an appropriate control solution. An innovative and detailed software model of a three-level inverter is developed and then used for the implementation of control techniques. Several tuning methods are used to tune PID controllers for two specific cases: the multilevel inverter with a linear load and with an asynchronous motor load, respectively. A detailed analysis and comparisons of the quality criteria and control performance are achieved. This analysis shows that the choice of controller type depends on the inverter load. For the linear load, proper results are obtained with a PI Nichols-tuned controller, and for the asynchronous load, with a PI controller tuned via a modified Hokushin method. The computer-aided design tools can be further used for the simulation of the equipment in various operating conditions, normal and fault, following all functional parameters.

Effective Teaching of Computer Integrated Mechanism Analysis and Design

2005 ◽  
Author(s):  
Harry H. Cheng ◽  
Matt Campbell
Keyword(s):  
Effective Teaching ◽  
Mechanism Design ◽  
Computer Aided Design ◽  
Teaching Strategy ◽  
Mechanism Analysis ◽  
Analysis And Design ◽  
Computer Aided ◽  
Course Material ◽  
High Level ◽  
Aided Design

An effective teaching strategy that integrates computer aided design and programming into a course on mechanism analysis and design is presented. Mechanism analysis is enhanced when coupled with basic programming that allows students to find solutions to more complex systems than would otherwise be possible. Web-based distance learning is part of the class and students also learn how to create these kinds of materials themselves. Students can better understand the course material through an integrated computing environment. By solving mechanism design problems in C/C++, the programming skills gained in the course are widely applicable in other areas of engineering. Ch, a C/C++ interpreter, is used to incorporate programming and mechanism design because of its high-level numerical and graphical plotting capabilities, scripting capability, and a mechanism toolkit with easy and quick animation. A student project is given as an example to show how computers are integrated for effective learning. This teaching strategy has been actively used at UC Davis for several years in an undergraduate course in computer-aided mechanism design.

Computer-Aided Design of Bicycles

1991 ◽  
Author(s):  
M. Khosrowjerdi ◽  
Robert C. Azar ◽  
Ali Salehi ◽  
G. H. Nazari
Keyword(s):  
Computer Aided Design ◽  
Post Processing ◽  
Finite Element Program ◽  
Analysis And Design ◽  
Design Engineers ◽  
Pertinent Data ◽  
Computer Aided ◽  
Element Program ◽  
Analysis System ◽  
Aided Design

Abstract Traditional manual designing of bicycles often relies on prototype building and testing and since structural deficiencies often are not obvious until a prototype fails, several build-and-test iterations are usually required before a satisfactory design is obtained. Also, the final design may be less than optimal because of quick fixes inserted at the last minute. However, by utilizing computer-aided design, better bicycles can be designed at smaller investments of time and money. The development and utilization of a DI-3000 based (graphics subroutines developed by Precision Visual), user-friendly, self contained computer aided design package for the analysis and design of bicycle frames and forks are presented. The software, written in Fortran 77 and executable on most passive and active graphics devices, creates the necessary analysis input files for the ANSYS finite element program (developed and marketed by Swanson Analysis System Inc.). These pre and post processing files in conjunction with the ANSYS program are used to determine deflections and stress components. The graphics user interface module of the software allows users to enter bicycle geometry, loading and other pertinent data quickly and efficiently. Tubing configuration and specifications are selected from a data base through the use of cursor-controlled menus. The loading menu presents users with seven different types of realistic and self-consistent loading conditions from which to choose. Computer graphics is also used extensively wherever appropriate to enhance user-computer interaction. Contrasting color and text size are used to explain pictorially as well as visually unfamiliar terminology and to clarify vague sign or orientation conventions, thus, leading to more accurate input. While this package has been designed for instructional purposes, it can also be used by design engineers involved in the design of bicycles to facilitate the creation of ANSYS pre and post processing files.

Computer Aided Design of Power Transmission Screw

2011 ◽  
Vol 367 ◽  
pp. 753-776
Author(s):  
John A. Akpobi ◽  
R. O. Edokpia ◽  
M.H. Oladeinde
Keyword(s):  
Computer Aided Design ◽  
Power Transmission ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Bench Mark ◽  
Analysis And Design ◽  
Computer Aided ◽  
Design Software ◽  
Aided Design ◽  
Oriented Programming Language

In this work, computer aided design software for the analysis and design of Power Transmission Screws, is presented. In designing the software, the relevant equations and models were assembled and carefully programmed using Microsoft Visual Basic.Net (an object oriented programming language). Also visual representation of the solution to problems of Power Transmission Screw was developed, in form of graphical solutions. The software was tested on a variety of bench mark problems. The solutions obtained were highly accurate, thus validating the performance of software.

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