EMCH 561B Compliant Mechanisms Spring 2006

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Oct 31, 2013 (4 years and 13 days ago)

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EMCH 561
B



Compliant Mechanisms

Spring 2006

Schedule Code: 246226
;
Credit = 3 hours

Tuesday and Thursday 11:00 to 12:15

in
Room B101



Professor:


Dr. Rocheleau, 300 South Main A131, 777
-
9395

Office Hours:


3:00 to 4:00 Tuesday, Wednesday and Thursday and

by appointment

Email:



Rocheleau@sc.edu

Prerequisite
:


EMCH
-
332 Kinematics and Dynamics of Machines

Required Text:

Compliant Mechanisms

by Larry L. Howell, John Wiley & Sons, Inc.

ISBN 0
-
471
-
38478
-
X




GRADING
:


Homework
*
:




20%




Midterm Exam 1 (Open
Book):

20%




Project
**
:




30%




Notebook:




10%




Final Exam (Open Book):


20% (T
uesday May 2
at 9:00 a.m.)








*NO late homework will be accepted unless prior arrangements are made.

**
Graduate

level projects

are to be significantly more difficult



Course Description

The area of compliant mechanisms is a relatively new field of study. Recently developed theory
makes possible the design of many new types of mechanisms, and this course will concentrate on
the design and analysis of such mechanisms. T
he topics of traditional kinematics and linear
elastic deflections will be reviewed, and the area of large
-
deflection analysis will be introduced.
Compliant mechanism theory will be introduced and applied. A term project of the student’s
choosing will be a

central part of the course.


Notebook

A notebook will be kept throughout the term and will include the following in separate and
distinct sections of the notebook:

-

Lists and sketches of products or systems that require the deflection of their parts to
per
form their function.

-

Lists and sketches of rigid
-
body mechanisms that may be a candidate for replacement by
a compliant mechanism. Sketches of compliant mechanisms designs for mechanisms that
do not currently exist.

-

Design documentation or other informatio
n related to the project.


Project

A design project will cover the length of the term. The project m
ust be done individually by
graduate students

and can be done in pairs for undergraduate students. The project must be
significantly more difficult for
gra
duate

level students. Dr. Rocheleau must pre
-
approval the
level of difficulty on all projects.

Course Outline


INTRODUCTION

-

Definition of compliant mechanisms

-

Advantages and disadvantages of compliant mechanisms

-

Nomenclature and Diagrams


FLEXIBILITY AN
D DEFLECTION

-

Linear vs. nonlinear deflections

-

Stiffness, strength, and flexibility

-

Materials choice

-

Linear elastic deflections

-

Large
-
deflection analysis


FAILURE ANALYSIS

-

Stress

-

Static Failure

-

Fatigue Failure


REVIEW OF RIGID
-
BODY MECHANISMS

-

Review of ba
sic nomenclature

-

Position analysis

-

Kinematic synthesis


PSEUDO
-
RIGID
-
BODY MODEL

-

Introduction

-

Pseudo
-
rigid
-
body models for flexible segments

-

Modeling of Mechanisms


FORCE
-
DEFLECTION RELATIONSHIPS

-

Introduction

-

Free
-
body diagram approach

-

Principle of virtual
work


COMPLIANT MECHANISM SYNTHESIS

-

Introduction

-

Rigid
-
body replacement

-

Synthesis for compliance

-

Optimization


SPECIAL PURPOSE MECHANISMS

-

Bistable mechanisms

-

Parallel mechanisms

-

Constant
-
force mechanisms

-

Orthoplanar mechanisms