Investigations of the hydromechanical deep drawing of steel tailor welded blanks:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Frankfurt [Main]
MAT-INFO, Werkstoff-Informationsges.
2007
|
| Series: | Beiträge zur Umformtechnik
57 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | 160 S. Ill., graph. Darst. |
| ISBN: | 9783883553603 |
Staff View
MARC
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| 100 | 1 | |a Hétu, Louise |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Investigations of the hydromechanical deep drawing of steel tailor welded blanks |c von Louise Hétu |
| 264 | 1 | |a Frankfurt [Main] |b MAT-INFO, Werkstoff-Informationsges. |c 2007 | |
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| 650 | 0 | 7 | |a Tailored blank |0 (DE-588)4561339-4 |2 gnd |9 rswk-swf |
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
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Record in the Search Index
| _version_ | 1804140641058291712 |
|---|---|
| adam_text | INVESTIGATIONS OF THE HYDROMECHANICAL DEEP DRAWING OF STEEL TAILOR
WELDED BLANKS VON DER FAKULTST MASCHINENBAU DER UNIVERSITAT STUTTGART
ZUR ERIANGUNG DER WURDE EINES DOKTOR-LNGENIEURS (DR.-LNG.) GENEHMIGTE
ABHANDLUNG VORGELEGT VON LOUISE HETU AUS MONTREAL, CANADA
HAUPTBERICHTER: PROF. DR.-LNG. MATHIAS LIEWALD MBA MITBERICHTER: PROF.
DR. JACK JESWIET, P.ENG. TAG DER MUNDLICHEN PRUFUNG: 20. APRIL 2007
INSTITUT FUR UMFORMTECHNIK DER UNIVERSITAT STUTTGART 2007 TABLE OF
CONTENTS TABLE OF CONTENTS ACKNOWLEDGMENTS 5 TABLE OF CONTENTS 7 TABLE
OF NOMENCLATURE AND ABBREVIATIONS 11 ABSTRACT * .15 ZUSAMMENFASSUNG .17
1 INTRODUCTION 19 1.1 INCREASE IN PRODUCT DIVERSITY THROUGH
HYDROMECHANICAL DEEP DRAWING... 19 1.2 REDUCTION IN VEHICLE WEIGHT
THROUGH THE USE OF TAILOR WELDED BLANKS 21 2 STATE-OF-THE-ART 26 2.1
CONVENTIONAL DEEP DRAWING 26 2.1.1 PROCESS DESCRIPTION 26 2.1.2 STRESSES
AND STRAINS 26 2.1.3 PROCESS LIMITS 29 2.1.4 DRAW RATIO AND LIMITING
DRAW RATIO 30 2.1.5 APPLIED FORCES DURING THE DEEP DRAWING PROCESS 30
2.2 HYDROMECHANICAL DEEP DRAWING 31 2.2.1 PROCESS DESCRIPTION 31 2.2.2
PROCESS LIMITS 32 2.2.3 APPLIED FORCES DURING THE HYDROMECHANICAL DEEP
DRAWING PROCESS 33 2.2.4 LIMITING DRAW RATIO .....33 2.3 FINITE ELEMENT
ANALYSIS OF THE DEEP DRAWING PROCESS 34 2.4 TAILOR WELDED BLANKS 36
2.4.1 FORMABILITY OF TAILOR WELDED BLANKS 36 2.4.2 MODELLING TAILOR
WELDED BLANKS IN THE FINITE ELEMENT METHOD 38 2.4.3 WELD LINE MOVEMENT
IN TAILOR WELDED BLANKS 45 2.4.4 TOOL MODIFICATIONS FOR THE CONVENTIONAL
DEEP DRAWING OF TAILOR WELDED BLANKS 47 8 TABLE OF CONTENTS 2.4.5
SUMMARY OF LITERATURE REVIEW 49 3 OBJECTIVES OF WORK 51 4 MATERIAL
INVESTIGATIONS 53 4.1 LASER WELDING OF TAILOR WELDED BLANKS 53 4.2
TENSILE TEST OF BASE MATERIALS 55 4.2.1 EXPERIMENTAL METHOD AND
APPARATUS 55 4.2.2 RESULTS 56 4.3 DETERMINATION OF WELD LINE PARAMETERS
IN TAILOR WELDED BLANKS ... 57 4.3.1 TENSILE TEST OF SUBSIZE TAILOR
WELDED BLANK SPECIMENS 57 4.3.2 MICROHARDNESS INVESTIGATIONS OF THE WELD
LINE 67 4.3.3 METALLOGRAPHIC INVESTIGATIONS OF THE WELD LINE 72 5 FINITE
ELEMENT SIMULATION OF THE DEEP DRAWING OF TAILOR WELDED BLANKS 74 5.1
OVERVIEW OF THE GEOMETRICAL SPECIFICATIONS OF THE TOOL 74 5.2
DETERMINATION OF THE BLANK HOLDER FORCE 75 5.3 SIMULATION SET-UP IN
DYNAFORM 75 5.3.1 DEFINITION OF BOUNDARY CONDITIONS - LOAD CURVES,
CONTACT AND FRICTION FOR THE TOOL PARTS : 76 5.4 FE-MODELLING OF TAILOR
WELDED BLANKS 77 5.4.1 BLANK MODELLING 77 5.4.2 BLANK MATERIAL
PROPERTIES 78 5.5 MODELLING OF THE HYDROMECHANICAL DEEP DRAWING PROCESS
79 5.6 FINITE ELEMENT ANALYSIS AND RESULTS 80 5.6.1 PERCENT THICKNESS
REDUCTION METHOD 81 5.6.2 USE OF FORMING LIMIT DIAGRAM FOR THE
PREDICTION OF FAILURE IN TWBS 82 5.6.3 INFLUENCE OF THE N-VALUE AND
THICKNESS ON THE FLCO .83 5.6.4 FORMING LIMIT DIAGRAM METHOD 84 5.6.5
WELD LINE PARAMETERS VS. LINKED ELEMENTS 86 5.6.6 INFLUENCE OF THE WELD
LINE WIDTH ON THE FEA RESULTS 88 5.6.7 EFFECT OF BLANK HOLDER PRESSURE
ON THE WELD LINE MOVEMENT IN FLANGE 89 5.6.8 CONTACT ISSUES ENCOUNTERED
BETWEEN THE WELD LINE AND THE BLANK HOLDER 91 5.6.9 DETERMINATION OF
WELD LINE MOVEMENT IN FE A 92 TABLE OF CONTENTS TOOL FOR THE
HYDROMECHANICAL DEEP DRAWING OF TAILOR WELDED BLANKS 94 6.1 DESIGN
PROBLEMS ENCOUNTERED DUE TO A COUNTER PRESSURE 94 6.1.1 TOOL
MODIFICATIONS TO ACCOMMODATE TAILOR WELDED BLANKS 94 6.1.2 BLANK HOLDER
SEGMENTATION 95 6.2 TOOL WITH A 10-POINT CUSHION SYSTEM 97 6.2.1
HYDRAULIC SYSTEM FOR THE MULTI-POINT CUSHION SYSTEM 98 6.2.2 COUNTER
PRESSURE UNIT 104 6.3 EXPERIMENTAL INVESTIGATIONS 105 6.3.1 MEASURING
SYSTEM USING LABVTEW* 106 EXPERIMENTAL RESULTS 108 7.1 VERIFICATION OF
THE BLANK HOLDER PRESSURE DISTRIBUTION ON THE PART FLANGE 108 7.2
PROCESS LIMITS FOR THE HYDROMECHANICAL DEEP DRAWING OF CYLINDRICAL CUPS
MADE OF TAILOR WELDED BLANKS 109 7.2.1 PART FAILURE DUE TO WELD LINE
MOVEMENT 109 7.2.2 EQUAL MATERIAL FLOW-IN OF TAILOR WELDED BLANK
PARTNERS 111 7.2.3 SYMMETRICAL WELD LINE PROFILE 112 7.2.4 PROBLEMS
ENCOUNTERED USING A SEGMENTED BLANK HOLDER AND COUNTER PRESSURE 112 7.3
FORMABILITY OF THE TWB COMBINATIONS DEPENDING ON THE COUNTER PRESSURE
114 7.3.1 RESULTS FOR DIFFERENT TWB COMBINATIONS - LINING DRAW RATIO 115
7.4 FORMING ANALYSIS 117 7.4.1 COMPARISON OF THE FORMING ANALYSIS AT THE
LIMITING DRAW RATIO 118 7.5 WELD LINE MOVEMENT 121 7.5.1 EXPERIMENTAL
APPARATUS AND METHOD 122 7.5.2 METHOD TO EVALUATE THE RESULTS FROM THE
WELD LINE MOVEMENT ANALYSIS .... 124 7.5.3 COMPARISON OF THE WELD LINE
MOVEMENT BETWEEN CONVENTIONAL AND COUNTER PRESSURE OF 20 MPA 125 7.5.4
COMPARISON OF THE WELD LINE MOVEMENT AT INCREASING COUNTER PRESSURE AT
THE LIMITING DRAW RATIO 130 W TABLE OF CONTENTS 7.5.5 COMPARISON OF THE
WELD LINE MOVEMENT AT INCREASING COUNTER PRESSURE AT THE SAME DRAW DEPTH
132 7.5.6 COMPARISON OF WELD LINE MOVEMENT USING EACH HYDRAULIC SYSTEM
DESIGN 133 7.5.7 FORCING A WELD LINE MOVEMENT 135 7.6 COMPARISON BETWEEN
FEA AND EXPERIMENTAL RESULTS 137 8 CONCLUSIONS AND OUTLOOK 139 9
APPENDIX 141 9.1 MATERIAL INVESTIGATIONS 141 9.1.1 FLOW CURVES FROM THE
TENSILE TESTING OF SUBSIZE TWBS 141 9.1.2 MATERIAL INVESTIGATIONS -
HARDNESS TESTING RESULTS FOR THE TWBS 146 9.2 CONNECTOR PIN ASSIGNMENT
148 LITERATURE 150 VITA 160
|
| any_adam_object | 1 |
| author | Hétu, Louise |
| author_facet | Hétu, Louise |
| author_role | aut |
| author_sort | Hétu, Louise |
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| dewey-hundreds | 600 - Technology (Applied sciences) |
| dewey-ones | 671 - Metalworking & primary metal products |
| dewey-raw | 671.34 |
| dewey-search | 671.34 |
| dewey-sort | 3671.34 |
| dewey-tens | 670 - Manufacturing |
| discipline | Werkstoffwissenschaften / Fertigungstechnik |
| format | Thesis Book |
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| indexdate | 2024-07-09T22:03:12Z |
| institution | BVB |
| isbn | 9783883553603 |
| language | English |
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| physical | 160 S. Ill., graph. Darst. |
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| spelling | Hétu, Louise Verfasser aut Investigations of the hydromechanical deep drawing of steel tailor welded blanks von Louise Hétu Frankfurt [Main] MAT-INFO, Werkstoff-Informationsges. 2007 160 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Beiträge zur Umformtechnik 57 Zugl.: Stuttgart, Univ., Diss., 2007 Deformationsverhalten (DE-588)4148995-0 gnd rswk-swf Hydromechanisches Tiefziehen (DE-588)4562068-4 gnd rswk-swf Tailored blank (DE-588)4561339-4 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Tailored blank (DE-588)4561339-4 s Hydromechanisches Tiefziehen (DE-588)4562068-4 s Deformationsverhalten (DE-588)4148995-0 s DE-604 Beiträge zur Umformtechnik 57 (DE-604)BV009891822 57 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018592609&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Hétu, Louise Investigations of the hydromechanical deep drawing of steel tailor welded blanks Beiträge zur Umformtechnik Deformationsverhalten (DE-588)4148995-0 gnd Hydromechanisches Tiefziehen (DE-588)4562068-4 gnd Tailored blank (DE-588)4561339-4 gnd |
| subject_GND | (DE-588)4148995-0 (DE-588)4562068-4 (DE-588)4561339-4 (DE-588)4113937-9 |
| title | Investigations of the hydromechanical deep drawing of steel tailor welded blanks |
| title_auth | Investigations of the hydromechanical deep drawing of steel tailor welded blanks |
| title_exact_search | Investigations of the hydromechanical deep drawing of steel tailor welded blanks |
| title_full | Investigations of the hydromechanical deep drawing of steel tailor welded blanks von Louise Hétu |
| title_fullStr | Investigations of the hydromechanical deep drawing of steel tailor welded blanks von Louise Hétu |
| title_full_unstemmed | Investigations of the hydromechanical deep drawing of steel tailor welded blanks von Louise Hétu |
| title_short | Investigations of the hydromechanical deep drawing of steel tailor welded blanks |
| title_sort | investigations of the hydromechanical deep drawing of steel tailor welded blanks |
| topic | Deformationsverhalten (DE-588)4148995-0 gnd Hydromechanisches Tiefziehen (DE-588)4562068-4 gnd Tailored blank (DE-588)4561339-4 gnd |
| topic_facet | Deformationsverhalten Hydromechanisches Tiefziehen Tailored blank Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018592609&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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