Constitutive modeling of fcc single crystals and experimental study of mechanical size effects:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker
2010
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| Schriftenreihe: | Berichte aus der Materialwissenschaft
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XIV, 175 S. Ill., graph. Darst. |
| ISBN: | 9783832291822 |
Internformat
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Datensatz im Suchindex
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|---|---|
| adam_text | IMAGE 1
CONTENTS
NOMENCLATURE HI
1 INTRODUCTION 1
1 3
2 BACKGROUND 4
2.1 STRENGTH OF MATERIALS AND DISLOCATION DENSITY 4
2.1.1 STATISTICALLY STORED DISLOCATIONS 9
2.1.2 GEOMETRICALLY NECESSARY DISLOCATIONS 10
2.2 PLASTIC ANISOTROPY IN METALS 12
2.2.1 SCHMID BASED SINGLE GLIDE MODEL 12
2.2.2 TAYLOR BASED MULTIPLE GLIDE MODEL 13
2.2.3 RATE SENSITIVE MODELS 14
3 LITERATURE REVIEW 15
3.1 MECHANICAL SIZE EFFECTS IN THE ABSENCE OF STRAIN GRADIENTS 15
3.2 FOCUSSED ION BEAM MINING 25
3.3 INDENTATION SIZE EFFECT 2G
3.3.1 SELF-SIMILAR INDENTER TIPS 20
3.3.2 SPHERICAL INDENTER TIPS 28
3.4 HOW TO MEASURE G N D S? 31
3.5 EFFECT OF CRYSTAL ORIENTATION DURING INDENTATION 32
3.6 MICRO BENDING 33
3.7 BAUSCHINGER EFFECT 3(I
BIBLIOGRAFISCHE INFORMATIONEN HTTP://D-NB.INFO/1004755503
DIGITALISIERT DURCH
IMAGE 2
CONTENTS
3.8 FEW CRYSTAL WORKS 37
3.9 DISLOCATION BASED PLASTICITY MODELS 39
3.9.1 DISLOCATION KINETICS 40
3.9.2 MOBILE DISLOCATION DENSITY AND ITS EVOLUTION 40
3.9.3 DISLOCATION GLIDE VELOCITY 42
3.9.4 DISLOCATION DENSITY BASED STRAIN HARDENING 42
3.9.5 DISLOCATION DENSITY BASED GRAIN BOUNDARY MODELS 43
II 45
4 FINITE ELEMENT MODELS 46
4.1 BALANCE EQUATIONS 46
4.2 FINITE ELEMENT DISCRETIZATION 48
4.3 ISOTROPIE HARDENING MODEL 51
4.3.1 DEFORMATION KINEMATICS 51
4.3.2 DISLOCATION BASED CONSTITUTIVE LAW 53
4.3.3 GRAIN BOUNDARY MODEL 55
4.3.4 IMPLICIT TIME INTEGRATION METHOD 56
4.4 CRYSTAL PLASTICITY 59
4.4.1 DEFORMATION KINEMATICS 59
4.4.2 PHENOMENOLOGICAL CONSTITUTIVE LAW 62
4.4.3 DISLOCATION BASED CONSTITUTIVE LAW C3
4.4.4 IMPLICIT TIME INTEGRATION METHOD 64
5 BENDING OF MICRO CANTILEVER BEAMS WITH CUBE ORIENTATION 69
5.1 EXPERIMENTS 69
5.2 EXPERIMENTAL RESULTS 72
5.3 SIMULATIONS 79
5.3.1 EFFECTS OF THICKNESS VARIATION (TAPER), FRICTION COEFFICIENT
AND RADIUS OF THE ROUNDED INSIDE COMER 80
5.3.2 FINAL MODEL 81
5.4 DISCUSSION 83
IMAGE 3
CONTENTS
6 EFFECTS OF CRYSTAL ORIENTATION AND GRAIN BOUNDARY ON THE PLASTIC
STRAIN DISTRIBUTIONS OF A FEW CRYSTAL ALUMINUM 86
6.1 EXPERIMENTS 86
6.2 SIMULATIONS 92
6.3 DISCUSSION 97
7 EXPERIMENTAL INVESTIGATION OF THE MECHANICAL SIZE EFFECT OBSERVED IN
CANTILEVER BEAM BENDING 99
7.1 CANTILEVER BEAMS WITH RECTANGULAR CROSS SECTIONS 99
7.1.1 EXPERIMENTS 99
7.1.1.1 FABRICATION OF THE BEAMS 99
7.1.1.2 MATERIAL CHARACTERIZATION 101
7.1.1.3 MECHANICAL TEST RESULTS 101
7.1.1.4 SEM AND EBSD MEASUREMENTS AFTER BENDING . . 104 7.1.2 DISCUSSION
107
7.2 CANTILEVER BEAMS WITH CIRCULAR CROSS SECTIONS I LL
7.2.1 EXPERIMENTS 112
7.2.2 DISCUSSION 114
8 EXPERIMENTAL INVESTIGATION OF BAUSCHINGER EFFECT DURING BENDING OF A
MICRO CANTILEVER BEAM 120
8.1 EXPERIMENTS 120
8.2 DISCUSSION 123
9 DEPTH DEPENDENCE OF HARDNESS DURING CONICAL-LIKE INDENTATION OF COPPER
130
9.1 EXPERIMENTAL 130
9.1.1 INDENTATION 130
9.1.2 EBSD MEASUREMENTS 131
9.2 ANALYSIS OF EBSD DATA 134
9.2.1 GND ANALYSIS 134
9.2.2 STRESS FIELDS AROUND GNDS 137
9.3 RESULTS AND DISCUSSION 140
IMAGE 4
CONTENTS
10 CONCLUSIONS 145
A IMPORTANT DEFINITIONS 150
A. 1 CRYSTAL TO SAMPLE REFERENCE TRANSFORMATIONS 150
A.2 WORK CONJUGACY BETWEEN RESOLVED SHEAR STRESS AND SHEAR RATES . . 150
A.3 PERTURBATION METHOD TO FIND THE MATERIAL TANGENT 152
A.4 MOBILE DISLOCATION DENSITY 153
A.5 VECTOR AND TENSOR OPERATIONS 153
|
| any_adam_object | 1 |
| author | Demir, Eralp |
| author_GND | (DE-588)141885157 |
| author_facet | Demir, Eralp |
| author_role | aut |
| author_sort | Demir, Eralp |
| author_variant | e d ed |
| building | Verbundindex |
| bvnumber | BV039857525 |
| ctrlnum | (OCoLC)671353863 (DE-599)BVBBV039857525 |
| dewey-full | 620.18692 |
| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 620 - Engineering and allied operations |
| dewey-raw | 620.18692 |
| dewey-search | 620.18692 |
| dewey-sort | 3620.18692 |
| dewey-tens | 620 - Engineering and allied operations |
| format | Thesis Book |
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| id | DE-604.BV039857525 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T00:12:48Z |
| institution | BVB |
| isbn | 9783832291822 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-024717147 |
| oclc_num | 671353863 |
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| physical | XIV, 175 S. Ill., graph. Darst. |
| publishDate | 2010 |
| publishDateSearch | 2010 |
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| publisher | Shaker |
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| series2 | Berichte aus der Materialwissenschaft |
| spelling | Demir, Eralp Verfasser (DE-588)141885157 aut Constitutive modeling of fcc single crystals and experimental study of mechanical size effects Eralp Demir Aachen Shaker 2010 XIV, 175 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Berichte aus der Materialwissenschaft Zugl.: Aachen, Techn. Hochsch., Diss., 2010 Mechanische Eigenschaft (DE-588)4217961-0 gnd rswk-swf Size-Effekt (DE-588)4181611-0 gnd rswk-swf Kubisch flächenzentriertes Gitter (DE-588)4259124-7 gnd rswk-swf Einkristall (DE-588)4013901-3 gnd rswk-swf Aluminium (DE-588)4001573-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Aluminium (DE-588)4001573-7 s Einkristall (DE-588)4013901-3 s Kubisch flächenzentriertes Gitter (DE-588)4259124-7 s Mechanische Eigenschaft (DE-588)4217961-0 s Size-Effekt (DE-588)4181611-0 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024717147&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Demir, Eralp Constitutive modeling of fcc single crystals and experimental study of mechanical size effects Mechanische Eigenschaft (DE-588)4217961-0 gnd Size-Effekt (DE-588)4181611-0 gnd Kubisch flächenzentriertes Gitter (DE-588)4259124-7 gnd Einkristall (DE-588)4013901-3 gnd Aluminium (DE-588)4001573-7 gnd |
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| title | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects |
| title_auth | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects |
| title_exact_search | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects |
| title_full | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects Eralp Demir |
| title_fullStr | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects Eralp Demir |
| title_full_unstemmed | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects Eralp Demir |
| title_short | Constitutive modeling of fcc single crystals and experimental study of mechanical size effects |
| title_sort | constitutive modeling of fcc single crystals and experimental study of mechanical size effects |
| topic | Mechanische Eigenschaft (DE-588)4217961-0 gnd Size-Effekt (DE-588)4181611-0 gnd Kubisch flächenzentriertes Gitter (DE-588)4259124-7 gnd Einkristall (DE-588)4013901-3 gnd Aluminium (DE-588)4001573-7 gnd |
| topic_facet | Mechanische Eigenschaft Size-Effekt Kubisch flächenzentriertes Gitter Einkristall Aluminium Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024717147&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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