Computer-Aided Design of Power Transmission Shafts Subject to Size, Strength, and Deflection Constraints Using a Nonlinear Programming Technique

1985 ◽  
Vol 107 (1) ◽  
pp. 133-140
Author(s):  
G. Umasankar ◽  
C. R. Mischke
Keyword(s):  
Nonlinear Programming ◽  
Design Problem ◽  
Computer Aided Design ◽  
Power Transmission ◽  
Programming Technique ◽  
Cost Criterion ◽  
Transmission Shaft ◽  
Computer Aided ◽  
Aided Design ◽  
Np Problem

The problem of synthesis of power transmission shafts supported on two bearings, subject to dimensional, strength, and deflection constraints is posed as a nonlinear programming (NP) problem. The formulation of the design problem and its solution using the gradient projection (GP) algorithm are presented. A computer program for shaft design against a user-definable weight/cost criterion, based on the formulation and solution presented, is made available. A design example illustrating this approach to power transmission shaft design is included.

Selective Precision Synthesis—A General Method of Optimization for Planar Mechanisms

1975 ◽  
Vol 97 (2) ◽  
pp. 689-701 ◽  
Author(s):  
S. N. Kramer ◽  
G. N. Sandor
Keyword(s):  
Nonlinear Programming ◽  
Computer Aided Design ◽  
Planar Mechanisms ◽  
Small Perturbations ◽  
Function Generation ◽  
Computer Aided ◽  
Stable Solutions ◽  
Precision Synthesis ◽  
Aided Design ◽  
General Method

A general method of optimal design of planar mechanisms is presented here called Selective Precision Synthesis (SPS for short), suitable for path, motion or function generation, with different arbitrary limits of accuracy at various discrete positions. It was found that the method yields fundamentally stable solutions: while in closed-form synthesis, small changes in prescribed values often result in very different solutions or no solutions at all, in SPS small perturbations in problem specifications often produce only small variations in the synthesized linkage dimensions. Such stability is rarely found in Burmester theory and other synthesis techniques. Applying nonlinear programming and introducing the dyadic construction of mechanisms, the SPS technique is applicable to the synthesis of most planar mechanisms including four-bar, five-bar, multi-loop, multi-degree of freedom and adjustable mechanisms. Also, dyadic construction simplifies the optimization process and renders the method readily manageable in interactive computer-aided design. The SPS digital computer programs for batch and tele-processing are made available to interested readers.

Minimization of Inertia-Induced Forces in Spherical Four-Bar Mechanisms. Part 1: The General Spherical Four-Bar Linkage

1983 ◽  
Vol 105 (3) ◽  
pp. 471-477 ◽  
Author(s):  
G. S. Gill ◽  
F. Freudenstein
Keyword(s):  
Quadratic Programming ◽  
Computer Aided Design ◽  
High Speed ◽  
Programming Technique ◽  
Trade Off ◽  
Design Procedures ◽  
Computer Aided ◽  
Aided Design ◽  
Four Bar Linkage ◽  
Input Torque

Computer-aided design procedures have been developed for the optimum mass distribution of the links of high-speed spherical four-bar linkages. The analysis, which includes a quadratic-programming technique, allows an optimum trade-off between shaking forces, shaking moments, bearing reactions, and input-torque fluctuation. The results are illustrated in the case of a Hooke joint and a wobble-plate linkage.

scholarly journals Analysis of the production process of the forked forging used in the excavator drive system in order to improve the currently implemented technology by the use of numerical modeling

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Marek Hawryluk ◽  
Marcin Rychlik ◽  
Jacek Ziemba ◽  
Katarzyna Jasiak ◽  
Filip Lewandowski ◽  
...  
Keyword(s):  
Production Process ◽  
Computer Aided Design ◽  
Power Transmission ◽  
Three Dimensional ◽  
Forging Process ◽  
Computer Aided ◽  
Power Transmission Systems ◽  
Cad Models ◽  
Aided Design ◽  
Hot Die Forging

Abstract The study concerns a comprehensive analysis of a multistage hot-die forging on hammers, in order to produce a yoke-type forging, used as a component of excavator power transmission systems. The investigations were conducted with the aim to analyze and identify the sensitive areas in the process and then improve the currently implemented forging technology by using finite element (FE) simulation. QuantorForm (the developer of the QForm program) has developed a thermomechanical numerical model for the production of forked forging. The software Computer-Aided Three-Dimensional Interactive Application (CATIA) was used to develop and build Computer-Aided Design (CAD) models of forging tools. As a result of the numerical simulations, the plastic deformations and temperature distributions for the forgings and tools were obtained, and the force courses during the forging process were analyzed. The obtained results enabled a thorough analysis of the forging process, including identification of potential forging defects (laps) as well as those tool areas that are the most loaded and exposed to damage. On this basis, changes were implemented in the production process, which allowed for the improvement of the currently implemented technology and obtaining the corrected forgings.

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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