oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Computer Aided Design of a Spur Gear
J.O. Nordiana,S.O. Ogbeide,N.N. Ehigiamusoe,F.I. Anyasi
Journal of Engineering and Applied Sciences , 2012,
Abstract: In recent times, the design of gears using computer has become a highly complicated and comprehensive subject.This study therefore present a new method of how the spur gear can be designed and detailed with computer aided design, previously, emphasis was laid on primitive and probabilistic design processes which resulted in high operation cost and prolong time. A reliability model of the spur gear when designed using computer aided performed repetitive and routine tasks involved in design drawings, review and evaluation, produces accurate and efficient design drawings as a result of interactive computer graphics and provides substantial saving in time and cost of production.
Computer–Aided Design of the Critical Speed of Shafts
JA Akpobi, CC Ovuworie
Journal of Applied Sciences and Environmental Management , 2008,
Abstract: A computer aided design software for the analysis of the critical speed of shaft, is developed and presented in this work. The software was designed using the principles of object oriented programming, and implemented with the Microsoft Visual Basic Language. The package was tested on a number of benchmark design problems. The solutions obtained were highly accurate. Also, the software exhibited very high efficiency. To improve on the method of presenting these solutions, graphical features were incorporated. This enhances the ability to visualize results.
Computer–Aided Design of the Critical Speed of Shafts
JA Akpobi, GC Ovuworie
Journal of Applied Sciences and Environmental Management , 2007,
Abstract: A computer aided design software for the analysis of the critical speed of shaft, is developed and presented in this work. The software was designed using the principles of object oriented programming, and implemented with the Microsoft Visual Basic Language. The package was tested on a number of benchmark design problems. The solutions obtained were highly accurate. Also, the software exhibited very high efficiency. To improve on the method of presenting these solutions, graphical features were incorporated. This enhances the ability to visualize results.
On the Variety of Planar Spirals and Their Applications in Computer Aided Design
Rushan Ziatdinov,Kenjiro T. Miura
European Researcher , 2012,
Abstract: In this paper we discuss the variety of planar spiral segments and their applications in objects in both the real and artificial world. The discussed curves with monotonic curvature function are well-known in geometric modelling and computer aided geometric design as fair curves, and they are very significant in aesthetic shape modelling. Fair curve segments are used for two-point G1 and G2 Hermite interpolation, as well as for generating aesthetic splines.
On the variety of planar spirals and their applications in computer aided design  [PDF]
Rushan Ziatdinov,Kenjiro T. Miura
Computer Science , 2013,
Abstract: In this paper we discuss the variety of planar spiral segments and their applications in objects in both the real and artificial world. The discussed curves with monotonic curvature function are well-known in geometric modelling and computer aided geometric design as fair curves, and they are very significant in aesthetic shape modelling. Fair curve segments are used for two-point G1 and G2 Hermite interpolation, as well as for generating aesthetic splines.
Computer Aided Design Modeling for Heterogeneous Objects  [PDF]
Vikas Gupta,K. S. Kasana,Puneet Tandon
International Journal of Computer Science Issues , 2010,
Abstract: Heterogeneous object design is an active research area in recent years. The conventional CAD modeling approaches only provide geometry and topology of the object, but do not contain any information with regard to the materials of the object and so can not be used for the fabrication of heterogeneous objects (HO) through rapid prototyping. Current research focuses on computer-aided design issues in heterogeneous object design. A new CAD modeling approach is proposed to integrate the material information into geometric regions thus model the material distributions in the heterogeneous object. The gradient references are used to represent the complex geometry heterogeneous objects which have simultaneous geometry intricacies and accurate material distributions. The gradient references helps in flexible manipulability and control to heterogeneous objects, which guarantees the local control over gradient regions of developed heterogeneous objects. A systematic approach on data flow, processing, computer visualization, and slicing of heterogeneous objects for rapid prototyping is also presented.
Computer Aided Design Modeling for Heterogeneous Objects  [PDF]
Vikas Gupta,K. S. Kasana,Puneet Tandon
Computer Science , 2010,
Abstract: Heterogeneous object design is an active research area in recent years. The conventional CAD modeling approaches only provide geometry and topology of the object, but do not contain any information with regard to the materials of the object and so can not be used for the fabrication of heterogeneous objects (HO) through rapid prototyping. Current research focuses on computer-aided design issues in heterogeneous object design. A new CAD modeling approach is proposed to integrate the material information into geometric regions thus model the material distributions in the heterogeneous object. The gradient references are used to represent the complex geometry heterogeneous objects which have simultaneous geometry intricacies and accurate material distributions. The gradient references helps in flexible manipulability and control to heterogeneous objects, which guarantees the local control over gradient regions of developed heterogeneous objects. A systematic approach on data flow, processing, computer visualization, and slicing of heterogeneous objects for rapid prototyping is also presented.
Computer-Aided Design and Fabrication of Finger Prosthesis  [PDF]
Takeshi Murayama, Kosei Oono, Mitsunori Tada, Toru Eguchi, Misuzu Nagami, Mitsuhiro Tamamoto
Journal of Biomedical Science and Engineering (JBiSE) , 2015, DOI: 10.4236/jbise.2015.82010
Abstract: Custom-made esthetic finger prostheses, which are used for rehabilitation of patients with missing or impaired fingers, have been fabricated manually. However, such fabrication is time-consuming and requires manual skill. Here we propose a computer-aided method for fabricating finger pros-theses to save time and allow fabrications that do not require considerable manual skill. In this method, the dimensions of a patient’s healthy finger on the contralateral hand are first measured using a caliper. Using these dimensions, a three-dimensional model is constructed for fabricating a prosthesis for the patient’s impaired finger. Using the 3D model, a mold is designed using 3D modeling tools and a computer-aided design system. The resulting mold is then fabricated using a 3D printer. A finger prosthesis is fabricated by pouring silicone resin into the mold. A finger prosthesis for a volunteer was experimentally fabricated according to the proposed method. To evaluate the size and shape of the finger prosthesis, the difference between the finger prosthesis and the original finger of the volunteer was analyzed. Because the average difference between them was 0.25 mm, it was concluded that the proposed method could be used to fabricate a finger prosthesis of adequate size and shape.
Computer-Aided Design of Reinforced Earth Walls  [PDF]
Adnan Basma,Maher Omar,Abdallah Shanableh
Information Technology Journal , 2002,
Abstract: The design of the earth reinforced wall will inevitably involve an enormous amount of repetitive design calculations that are quite tedious and time consuming. This paper represents the development and verification of computer aided design program for reinforced earth walls formed by precast concrete facing panels. The program is written in advanced BASIC that is tailored for use on IBM compatible micro-computers. The program uses the presented input data to perform both external and internal stability analysis and produces the appropriate and safe design parameters. For external stabiltiy, the program computes the safety factors for (a) sliding on the base, (b) overturning about the toe and (c) baring capacity failure. Once the program deems the wall to be safe externally, it provides various alternative solutions for strip reinforcement system. Considering the selected system an internal stability analysis is conducted. For this part, the programme calculates the safety factors for (a) reinforcement rupture, (b) tensile failure of reinforcement, (c) tensile failure of connections, (d) pullout of reinforcement and (e) corrosion failure. The program is automatically adjusts the design to improve and fulfill all the stability criteria. Finally, the program provides design summarises of the safest wall.
Computer Aided Design of Differential Pressure Flow Meters  [PDF]
Yevhen Pistun, Leonid Lesovoy, Fedir Matiko, Roman Fedoryshyn
World Journal of Engineering and Technology (WJET) , 2014, DOI: 10.4236/wjet.2014.22009
Abstract: New methodology of designing the differential pressure flow meters for fluid energy carriers is developed in order to provide minimum uncertainty of results of flow rate measurement. This methodology is implemented in “Raskhod-RU” CAD system for computer aided design and calculation of differential pressure flow meters. “Raskhod-RU” CAD meets the requirements of new Standards implemented in CIS countries (GOST 8.586.1,2,3,4,5-2005) and provides accomplishment of the following tasks: verification of conditions (constraints) for application of the differential pressure method according to the requirements of new Standards; calculation of parameters of primary device, pipe straight lengths and flow meter in general according to the requirements of new Standards; calculation of uncertainty of results of fluid flow rate and volume measurement.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.