Mechanical System Design by R. B. Patil (PREVIEW)

Mechanical SystemDesign Semester VII - Mechanical Engineering (Pune University) R. B. Patil M.E. (Mech) (Design Engg.) Head, Department of Mechanical Engineering, Army Institute of Technology, Pune. Pune University) Copyright © by Tech-Max Publications. Bhutan. Maldives. Patil (Semester VII – Mechanical Engineering. Sri Lanka and designated countries in South-East Asia.411 009. Pune . Sale and purchase of this book outside of these countries is unauthorized by the publisher.41.Mechanical System Design R. India. Pune .com . Pakistan. No part of this publication may be reproduced. 91-20-24217965. by the way of trade or otherwise. Website : www. Survey No. without the prior written permission of the publisher. or otherwise circulated without the publisher’s prior written consent in any form of binding or cover other than which it is published and without a similar condition including this condition being imposed on the subsequent purchaser and without limiting the rights under copyright reserved above. Maharashtra State. Maniratna Complex. hired out. distributed or transmitted in any form or by any means. First Printed in India Second Edition Third Revised Edition Fourth Revised Edition Reprint : : : : : July 2006 October 2007 July 2008 August 2009 August 2010 This edition is for sale in India. Aranyeshwar Corner. Nepal. Near Kailas Jeevan Factory. B. First floor.techmaxbooks. All rights reserved. 10/1/1. This book is sold subject to the condition that it shall not. including photocopy. copied. Printed at : Image Offset. resold. 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(Tech-Max Book Code : P279) Price Rs. erosion and protection vessels .1  Design of Cylinders and Pressure Vessels : Thick and thin cylinders .Autofrettage and compound cylinders .Standard variable .Nozzles and Openings in pressure vessels Reinforcement of openings in shell and end closures .Unfired pressure vessels .Standard dimensions of flywheels.Design of hydraulic and pneumatic cylinders .Lame's equation .4  Statistical Consideration in Design : Frequency distribution .Gasketed joints in cylindrical vessels .Disk and rimmed flywheels .Area compensation method .Modes of failures in pressure vessels .Stresses induced in pressure vessels .Units of measurement of central tendency and dispersion . subsidiary and limit equations .Thin cylindrical and spherical vessels .Adequate and optimum design .Types of vessel supports. (Refer Chapter 1) UNIT .Clavarino’s and Birnie’s equations .Classification of pressure vessels as per I. helical spring.Corrosion.Optimum design with normal and redundant specifications of simple machine elements like : tension bar.Population combinations - . S.Histogram and frequency polygon . (Refer Chapter 2) UNIT .2  Optimum Design : Objectives of optimum design . transmission shaft.Stresses in flywheel rim and spokes .Johnson's Method of Optimum Design (MOD) .Materials of construction .Fundamental equation of motion . 500/- Scope of the Book… UNIT .Design of end closures as per code .Categories and types of welded joints .Primary.Torque analysis .Thickness of cylindrical and spherical shells .Normal distribution . 2825 .Design of disc and rimmed flywheels for various applications .Weld joint efficiency . (Refer Chapter 3) UNIT – 3  Design of Flywheel : Design of flywheel . Selection of optimum ray diagram .Design for welding.Basic principles.Design of displays and controls .Ray diagram .Deviation diagram .Analysis of twelve speed gear box – Compound ray diagram.Unit load and containerization.Belt idlers .Statistical analysis of tolerances Mechanical reliability and factor of safety.Power requirement of horizontal belt conveyors for frictional resistance of idlers and pulleys.Design for machining . .Capacity of conveyor .  (Refer Chapter 4) Design for Manufacture : General principles of design for manufacture and assembly (DFM and DFA) . (Refer Chapter 7) UNIT . contrast etc.Design and natural tolerances .  (Refer Chapter 5) Aesthetic and Ergonomic Considerations in Design of Products : Basic types of product forms .Practical examples of products or equipments using ergonomic and aesthetic design principles.Tension take-up systems . materials.Rubber covered and fabric ply belts .Principles of design of castings and forgings . (Refer Chapter 8) UNIT .5  Design of Gear Boxes for Machine Tool Applications : Basic considerations in design of drives . proportions. (Refer Chapter 6)  .Morgan's colour code . machine and environmental factors . symmetry. finishes.Belt tensions .Determination of variable speed range .Shape.Designing for appearance .Design of assembly . Objectives of material handling system .Relation between man.Conveyor pulleys .Graphical representation of speed and structure diagram . Belt conveyors : Flat belt and troughed belt conveyors .Difference between number of teeth of successive gears in a change gear box .Ergonomic considerations .6  Design of Material Handling Systems : System concept . features.Design for powder metallurgy . This book is an outcome of the years of classroom interaction with the students. The concepts have been developed from the fundamentals. The list of formulae has been given at the end of each chapter for the ready reference. This is the third book of the series on ‘Machine Design’. My thanks are due to all those people who have directly or indirectly contributed to this book. This book has been written for the third course in ‘Machine Design’. Sachin Shah and Shri Pradeep Lunawat of ‘Tech-Max Publications’ for their efforts in publishing this book. especially for the final year students of mechanical engineering. The main objective of this book is to bridge the gap between the reference books written by the renowned international authors and the requirements of undergraduate students. which comprehensively covers the design of different mechanical systems and various aspects of system design. Every concept is illustrated with the help of number of solved examples.Preface It gives a great pleasure to present this book on ‘Mechanical System Design’. The main emphasis has been given on explaining the concepts rather than merely providing the information. which are arranged in the order of increasing degree of difficulty. The book has been presented in a simple language without compromising the quality of text. used in engineering applications. . I would like to express my thanks to Shri. Patil To My Daughter Neha & Son Nikhil .Last. but not least.R. A feedback in the form of suggestions and comments from the readers for further improvement of the book will be highly appreciated.B. 1st October 2007 . my special thanks go to all my students whose continuous feedback while teaching this subject is the source of inspiration behind this book. .Author .