FiniteElementAnalysisTheoryandApplicationwithANSYS,3rdEdition

ANSYS

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LilmlrY of Congress Cataloging-in-Publication Data

Moaveni, Saeed.

Finite clement analysis: theory and application with ANSYS

I Saeed

Moaveni.-3rd

cd.

p. cm.

ISBN 0-13-189OS0·8-ISBN 0-13-2416514 (pie)

Finite clement

method-Data

processing.

ANSYS (Computer system) I. Title.

TA347.F5M622oo7

620.00I '51535-dc22

Vice President and Editorial Director, ECS:

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a trademark of Pearson Education, Inc.

book

may be reproduced, in any form

by any means, without permission

in writing from the publisher.

TIle author and publisher

this book have used their best efforts

preparing this book.TIlese efforts include the

development, research, and testing

the theories and programs to determine their effectiveness. TIle

author

and

publisher make no warranty of any kind, expressed

implied, with regard

these programs

the documentation

contained

this book. TIle

author

and publisher shall not be liable

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event for incidental

consequential

damages in connection with, or arising

out

of, the

fUl'l1ishing,

performance, or use

these programs'

Printed.

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ISBN

10:

ISBN

13:

0-13-189080-8

978-0-13-189080-0

Pearson Education

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Pearson Education, Upper Saddle River,

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Jersey

Preface

CHANGES

THE

THIRD

EDITION

The third edition, consisting

chapters, includes a number

new additions and changes

that

were

incorporated

response to suggestions

and

requests made by professors, stu-

dents,

and

professionals using the second edition

the book.

The

major changes include:

• A

new

section on using Excel to manipulate matrices

• A

new

comprehensive appendix

MATLAB

•

detail

theory

and

expanded

derivations

• Reorganization

Chapter

to include examples of batch files

•

Additional

problems

ORGANIZATION

There

are

many

good

textbooks

already in existence

that

cover

the

theory

finite

element

methods

for advanced students. However,

none

these

books

incorporate

ANSYS

an integral

part

their materials to introduce finite element modeling to un-

dergraduate

students

and newcomers. In recent years, the use

finite

element

analy-

sis

a design tool has grown rapidly. Easy-to-use, comprehensive

packages

such as

ANSYS, a general-purpose finite

element

computer

program

, have become

common

tools

the

hands

design engineers. Unfortunately, many

engineers

who lack the

proper

training

understanding

the underlying concepts have been using these tools.

1l1is introductory book

written to assist engineering students and practicing engineers

new to the field

finite element modeling to gain a clear understanding

the basic con-

cepts.

The

text offers insight into

the

theoretical aspects

finite

element

analysis

and

also covers some practical aspects

modeling.

Great

care

has been exercised to avoid

overwhelming

students

with theory, yet

enough

theoretical

background

offered to

allow individuals to use ANSYS intelligently

and

effectively. ANSYS

integral

part

this text. In each

chapter

, the relevant basic theory

discussed first

and

demonstrated

using simple problems with hand calculations.

These

problems

are

followed by exam-

ples

that

are

solved using ANSYS. Exercises in the text

are

also

presented

in this man-

ner.

Some

exercises require manual calculations, while others,

complex

nature

require

the

use

ANSYS.

The

simpler hand-calculation problems will

enhance

stu-

dents

understanding

the concepts by encouraging them to

through

the necessary

steps

in a finite

element

analysis.

Design

problems

are

also

included

the

end

Chapters

3, 4

,6,

and

9 through

14.

xii

Preface

Various

sources

error

that

can

contribute

incorrect

results

are

discussed. A

good

engineer

must

always find ways

check

the

results.

While

experimental

testing

models

may

the best way, such

testing

may

expensive

time consumingo

There-

fore

whenever

possible

throughout

this

text

emphasis

placed

doing

a "

sanity

check

verify

one

's finite

element

analysis

(FEA).

section

the

end

each

ap-

propriate

chapter

devoted

possible

approaches

for verifying

ANSYS

results.

Another

unique

feature

this

book

that

the

last

two

chapters

are

devoted

the

introduction

design, material selection, optimization,

and

parametric

programming

with

ANSYS.

The

book

organized

into

chapters.

Chapter

1 reviews basic ideas in finite

ement

analysis.

Common

formulations

such

direct

potential

energy

and

weighted

loesidual

methods

are

discussed.

Chapter

provides

comprehensive

review

matrix

algebra.

Chapter

deals

with

the

analysis

trusses,

because

trusses

offer

economical

solutions

many

engineering

structural

problems

overview

the

ANSYS

pro

gram

is given in

Chapter

that

students

can

begin

use

ANSYS

right

away.

Finite

element

formulation

members

under

axial

beams

and

frames

are

introduced

Chapter

5 lays

the

foundation

for

analysis

one

dimensional

problems

introducing

one-dimensional

linear

quadratic,

and

cubic

elements.

Global

, local,

and

natural

coordinate

systems

are

also

discussed

detail

Chapter

introduction

isoparametric

formulation

and

numerical

integration

Gauss-Legendre

formulae

are

also

presented

Chapter

considers

Galerkin

formulation

one-

dimensional

heat

transfer

and

fluid

problems.

Two-dimensional

linear

and

higher

order

elements

are

introduced

Chapter

Gauss-Legendre

formulae

for

two-dimensional

integrals

are

also

presented

Chapter

7. In

Chapter

the

essential

capabilities

and

the

organization

the

ANSYS

program

are

covered.

The

basic

steps

creating

and

ana-

lyzing a

model

with

ANSYS

discussed

in detail.

Chapter

includes

the

analysis

two-dimensional

heat

transfer

problems

with a

section

devoted

unsteady

situations.

Chapter

provides

analysis

torsion

noncircular

shafts

and

plane

stress

problems.

Dynamic

problems

are

explored

Chapter

11.

Review

dynamics

and

vibrations

mechanical

and

structural

systems

are

also

given in this

chapter.

Chapter

, two-

dimensional

, ideal fluid-mechanics

problems

are

analyzed.

Direct

formulation

the

piping

network

problems

and

underground

seepage

flow

are

also discussed.

Chapter

provides

a discussion

three-dimensional

elements

and

formulations.

This

chapter

also

presents

basic

ideas

regarding

top-down

and

bottom-up

solid

modeling

methods.

The

last

two

chapters

the

book

are

devoted

design

and

optimization

ideas.

Design

process

and

material

selection

are

explained

Chapter

14.

Design

optimization

ideas

and

parametric

programming

are

discussed

Chapter

15.

Examples

ANSYS

batch

files

are

also given in

Chapter

15.

Each

chapter

begins

stating

the

objectives

and

con-

cludes

summarizing

what

the

reader

should

have

gained

from

studying

that

chapter.

The

examples

that

are

solved

using

ANSYS

show

great

detail

how

use

ANSYS

model

and

analyze a

variety

engineering

problems.

Chapter

8 is

also

writ-

ten

such

that

can

taught

right

away

the

instructor

sees

the

need

start

with

ANSYS.

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