SOLUSION MANUAL FOR MATERIALS SELECTION IN
MECHANICAL DESIGN 6TH EDITION BY MICHAEL F.
ASHBY (AUTHOR)
,CONTENTS E1. INTRODUCTION TO EXERCISES
E2 MATERIAL EVOLUTION IN PRODUCTS (CHAPTER 1) E3. DEVISING CONCEPTS (CHAPTER 2)
E4. USING MATERIAL PROPERTIES (CHAPTER 3)
E5. USING MATERIAL SELECTION CHARTS (CHAPTER 4)
E6. TRANSLATION: CONSTRAINTS AND OBJECTIVES (CHAPTERS 5 AND 6) E7. DERIVING AND USING
MATERIAL INDICES (CHAPTERS 5 AND 6) E8. MULTIPLE CONSTRAINTS AND OBJECTIVES (CHAPTERS 7
AND 8)
E 9. SELECTING MATERIAL AND SHAPE (CHAPTERS 9 AND 10) E10. HYBRID MATERIALS (CHAPTERS 11
AND 12)
E11. SELECTING PROCESSES (CHAPTERS 13 AND 14) E12. MATERIALS AND THE ENVIRONMENT (CHAPTER
15)
E1 INTRODUCTION TO EXERCISES
THESE EXERCISES ARE DESIGNED TO DEVELOP FACILITY IN SELECTING
MATERIALS, PROCESSES AND SHAPE, AND IN DEVISING HYBRID MATERIALS
WHEN NO MONOLITHIC MATERIAL COMPLETELY MEETS THE DESIGN
REQUIREMENTS.
EACH EXERCISE IS ACCOMPANIED BY A WORKED SOLUTION. THEY ARE
ORGANIZED INTO THE TWELVE SECTIONS LISTED ON THE FIRST PAGE.
,3.
CORRECTLY ANSWERED BY LISTING THE SUBSET OF
MATERIALS THAT MAXIMIZE THIS INDEX. BUT A REQUEST FOR A SELECTION OF
MATERIALS FOR A COMPONENT – A WING SPAR, FOR INSTANCE (WHICH IS A
) – REQUIRES
THE EARLY EXERCISES ARE EASY. THOSE THAT FOLLOW LEAD THE READER
THROUGH THE USE OF MATERIAL PROPERTIES AND SIMPLE SOLUTIONS TO
MECHANICS PROBLEMS, DRAWING ON DATA AND RESULTS CONTAINED IN
APPENDICES A AND B; THE USE OF MATERIAL PROPERTY CHARTS; TECHNIQUES
FOR THE TRANSLATION OF DESIGN REQUIREMENT TO IDENTIFY CONSTRAINTS
AND OBJECTIVES; THE DERIVATION OF INDICES, SCREENING AND RANKING,
MULTI- OBJECTIVE OPTIMIZATION; COUPLED CHOICE OF MATERIAL AND SHAPE;
DEVISING HYBRIDS; AND THE CHOICE OF MATERIALS TO MEET ENVIRONMENTAL
CRITERIA.
THREE IMPORTANT POINTS.
1. SELECTION PROBLEMS ARE OPEN-ENDED AND, GENERALLY, UNDER-
SPECIFIED; THERE IS SELDOM A SINGLE, CORRECT ANSWER. THE PROPER
ANSWER IS SENSIBLE TRANSLATION OF THE DESIGN REQUIREMENTS INTO
, MATERIAL CONSTRAINTS AND OBJECTIVES, APPLIED TO GIVE A SHORT-LIST OF
POTENTIAL CANDIDATES WITH COMMENTARY SUGGESTING WHAT SUPPORTING
INFORMATION WOULD BE NEEDED TO NARROW THE CHOICE FURTHER.
2. THE POSITIONING OF SELECTION-LINES ON CHARTS IS A MATTER OF
JUDGEMENT. THE GOAL IS TO PLACE THE LINES SUCH THAT THEY LEAVE AN
ADEQUATELY LARGE "SHORT LIST" OF CANDIDATES (AIM FOR 4 OR SO),
DRAWN, IF POSSIBLE, FROM MORE THAN ONE CLASS OF MATERIAL.
IS A POOR ANSWER THAT IGNORES COMMON SENSE AND EXPERIENCE AND
FAILS TO ADD FURTHER CONSTRAINTS TO INCORPORATE THEM. STUDENTS
SHOULD BE ENCOURAGED
TO DISCUSS THE IMPLICATIONS OF THEIR SELECTION AND TO SUGGEST FURTHER
SELECTION STAGES.
THE BEST WAY TO USE THE CHARTS THAT ARE A FEATURE OF THE BOOK IS TO
MAKE CLEAN COPIES (OR DOWN-LOAD THEM FROM
HTTP://WWW.GRANTADESIGN.COM ) ON WHICH YOU CAN DRAW, TRY OUT
ALTERNATIVE SELECTION CRITERIA, WRITE COMMENTS AND SO FORTH.
ALTHOUGH THE BOOK ITSELF IS COPYRIGHTED, THE READER IS AUTHORIZED TO
MAKE COPIES OF THE CHARTS AND TO REPRODUCE THESE, WITH PROPER
REFERENCE TO THEIR SOURCE, AS HE OR SHE WISHES.
MECHANICAL DESIGN 6TH EDITION BY MICHAEL F.
ASHBY (AUTHOR)
,CONTENTS E1. INTRODUCTION TO EXERCISES
E2 MATERIAL EVOLUTION IN PRODUCTS (CHAPTER 1) E3. DEVISING CONCEPTS (CHAPTER 2)
E4. USING MATERIAL PROPERTIES (CHAPTER 3)
E5. USING MATERIAL SELECTION CHARTS (CHAPTER 4)
E6. TRANSLATION: CONSTRAINTS AND OBJECTIVES (CHAPTERS 5 AND 6) E7. DERIVING AND USING
MATERIAL INDICES (CHAPTERS 5 AND 6) E8. MULTIPLE CONSTRAINTS AND OBJECTIVES (CHAPTERS 7
AND 8)
E 9. SELECTING MATERIAL AND SHAPE (CHAPTERS 9 AND 10) E10. HYBRID MATERIALS (CHAPTERS 11
AND 12)
E11. SELECTING PROCESSES (CHAPTERS 13 AND 14) E12. MATERIALS AND THE ENVIRONMENT (CHAPTER
15)
E1 INTRODUCTION TO EXERCISES
THESE EXERCISES ARE DESIGNED TO DEVELOP FACILITY IN SELECTING
MATERIALS, PROCESSES AND SHAPE, AND IN DEVISING HYBRID MATERIALS
WHEN NO MONOLITHIC MATERIAL COMPLETELY MEETS THE DESIGN
REQUIREMENTS.
EACH EXERCISE IS ACCOMPANIED BY A WORKED SOLUTION. THEY ARE
ORGANIZED INTO THE TWELVE SECTIONS LISTED ON THE FIRST PAGE.
,3.
CORRECTLY ANSWERED BY LISTING THE SUBSET OF
MATERIALS THAT MAXIMIZE THIS INDEX. BUT A REQUEST FOR A SELECTION OF
MATERIALS FOR A COMPONENT – A WING SPAR, FOR INSTANCE (WHICH IS A
) – REQUIRES
THE EARLY EXERCISES ARE EASY. THOSE THAT FOLLOW LEAD THE READER
THROUGH THE USE OF MATERIAL PROPERTIES AND SIMPLE SOLUTIONS TO
MECHANICS PROBLEMS, DRAWING ON DATA AND RESULTS CONTAINED IN
APPENDICES A AND B; THE USE OF MATERIAL PROPERTY CHARTS; TECHNIQUES
FOR THE TRANSLATION OF DESIGN REQUIREMENT TO IDENTIFY CONSTRAINTS
AND OBJECTIVES; THE DERIVATION OF INDICES, SCREENING AND RANKING,
MULTI- OBJECTIVE OPTIMIZATION; COUPLED CHOICE OF MATERIAL AND SHAPE;
DEVISING HYBRIDS; AND THE CHOICE OF MATERIALS TO MEET ENVIRONMENTAL
CRITERIA.
THREE IMPORTANT POINTS.
1. SELECTION PROBLEMS ARE OPEN-ENDED AND, GENERALLY, UNDER-
SPECIFIED; THERE IS SELDOM A SINGLE, CORRECT ANSWER. THE PROPER
ANSWER IS SENSIBLE TRANSLATION OF THE DESIGN REQUIREMENTS INTO
, MATERIAL CONSTRAINTS AND OBJECTIVES, APPLIED TO GIVE A SHORT-LIST OF
POTENTIAL CANDIDATES WITH COMMENTARY SUGGESTING WHAT SUPPORTING
INFORMATION WOULD BE NEEDED TO NARROW THE CHOICE FURTHER.
2. THE POSITIONING OF SELECTION-LINES ON CHARTS IS A MATTER OF
JUDGEMENT. THE GOAL IS TO PLACE THE LINES SUCH THAT THEY LEAVE AN
ADEQUATELY LARGE "SHORT LIST" OF CANDIDATES (AIM FOR 4 OR SO),
DRAWN, IF POSSIBLE, FROM MORE THAN ONE CLASS OF MATERIAL.
IS A POOR ANSWER THAT IGNORES COMMON SENSE AND EXPERIENCE AND
FAILS TO ADD FURTHER CONSTRAINTS TO INCORPORATE THEM. STUDENTS
SHOULD BE ENCOURAGED
TO DISCUSS THE IMPLICATIONS OF THEIR SELECTION AND TO SUGGEST FURTHER
SELECTION STAGES.
THE BEST WAY TO USE THE CHARTS THAT ARE A FEATURE OF THE BOOK IS TO
MAKE CLEAN COPIES (OR DOWN-LOAD THEM FROM
HTTP://WWW.GRANTADESIGN.COM ) ON WHICH YOU CAN DRAW, TRY OUT
ALTERNATIVE SELECTION CRITERIA, WRITE COMMENTS AND SO FORTH.
ALTHOUGH THE BOOK ITSELF IS COPYRIGHTED, THE READER IS AUTHORIZED TO
MAKE COPIES OF THE CHARTS AND TO REPRODUCE THESE, WITH PROPER
REFERENCE TO THEIR SOURCE, AS HE OR SHE WISHES.
