Load-carrying columns subjected to impulsive loading: protection technology in high-speed-dynamics
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XII, 258 S. Ill., graph. Darst. |
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MARC
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| 035 | |a (DE-599)BVBBV040716843 | ||
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| 041 | 0 | |a eng | |
| 049 | |a DE-91 |a DE-12 | ||
| 100 | 1 | |a Rutner, Marcus |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Load-carrying columns subjected to impulsive loading |b protection technology in high-speed-dynamics |c vorgelegt von Marcus P. Rutner |
| 264 | 1 | |c 2012 | |
| 300 | |a XII, 258 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |a München, Techn. Univ., Habil.-Schr., 2012 | ||
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025697142&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-025697142 | ||
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| _version_ | 1804150024587706368 |
|---|---|
| adam_text | IMAGE 1
VII
TABLE OF CONTENTS
1 ABSTRACT IS
2 INTRODUCTION 17
3 OBJECTIVES 23
4 LITERATURE SURVEY 27
4.1 THE DYNAMIC RESPONSE O F THE STRUCTURE 27
4.2 STRUCTURAL HARDENING 30
4.3 FLUID FILLED FOAM 31
I
4.4 HUTCHINSON S ALL-METAL SANDWICH ELEMENTS 33
5 HYDROCODE ANALYSIS 35
5.1 INTRODUCTION 35
5.2 EXPLOSION AND EXPLOSIVES 35
5.3 WAVE PROPAGATION 36
5.3.1 ELASTIC WAVE PROPAGATION 36
5.3.2 PLASTIC WAVE PROPAGATION 42
5.3.3 SHOCKWAVES 44
5.4 BLAST WAVES 51
5.4.1 BLAST BOUNDARY CONDITIONS 51
5.4.2 FORMATION AND PROPAGATION O F BLAST WAVES 57
5.5 NUMERICAL SCHEMES 61
5.5.1 EULERIAN AND LAGRANGIAN FORMULATION 62
5.5.2 CONSERVATION LAWS IN EULER AND LAGRANGE FORMULATION 63
5.5.3 FINITE DIFFERENCE SCHEMES 66
HTTP://D-NB.INFO/1033760080
IMAGE 2
VIII
5.5.4 ACCURACY, STABILITY AND CONVERGENCE 68
5.5.5 RAYLEIGH-TAYLOR INSTABILITY 72
5.6 CONVERGENCE OF THE EULER PRESSURE AND IMPULSE 77
5.7 SUMMARY 80
6 CONSTITUTIVE LAWS 81
6.1 FAILURE SURFACE 81
6.2 PLASTIC HARDENING MATERIAL 87
6.2.1 ASSOCIATED FLOW 88
6.2.2 DRUCKER S POSTULATE 89
6.2.3 DRUCKER S INEQUALITY 90
6.2.4 CONVEXITY AND IRREVERSIBILITY 91
6.2.5 NON-ASSOCIATED FLOW 92
6.2.6 UNIQUENESS OF THE SOLUTION 93
6.2.7 CAP MODEL 93
6.2.8 SOFTENING, STRAIN LOCALIZATION AND SIZE EFFECT 94
6.2.9 RATE DEPENDENT MODELS - VISCOPLASTICITY 96
6.3 SUMMARY 96
7 CONCRETE MATERIAL MODEL IN NLFLEX 97
7.1 CAP SURFACE 100
7.2 FAILURE SURFACE 100
7.3 MODEL FITTING 103
7.3.1 BEHAVIOR OF CONFINED TEST SPECIMEN UNDER COMPRESSION 103
7.3.2 STRAIN LOCALIZATION 104
7.3.3 SHEAR BAND WIDTH 106
IMAGE 3
IX
7.3.4 STRAIN RATE INDUCED STRENGTH INCREASE 107
7.4 DAMAGE PARAMETER 108
8 EHRGOTT S CELLULAR CONCRETE I L L
8.1 EXPERIMENTAL T ESTING O F CELLULAR CONCRETE I L L
8.1.1 EXPERIMENTAL TEST SETUP 112
8.1.2 MEASUREMENTS 113
8.1.3 CONSTITUTIVE MODELING 114
9 FLUID FILLED FOAM 117
9.1 INTRODUCTION 117
9.2 AIR-FILLED FOAM VERSUS FLUID FILLED FOAM 119
9.2.1 FLUID FILLED FOAM MODEL BY GIBSON AND ASHBY 121
9.2.2 NEWTONIAN AND NON-NEWTONIAN FLUID 124
9.2.3 DAWSONS ANALYTICAL MODEL 125
9.2.4 A CONSTITUTIVE MODEL FOR FLUID FILLED FOAM 126
10 NUMERICAL ASPECTS 137
10.1 DYNAMIC FINITE ELEMENT ANALYSIS 137
10.2 EXPLICIT METHOD 142
10.3 IMPLICIT METHOD 145
10.4 STABILITY 147
10.5 ACCURACY 148
10.5.1 COMPUTATIONAL ERROR 148
10.5.2 ARTIFICIAL DAMPING 151
10.5.3 ELEMENT AND MESH INSTABILITY 154
10.6 MESH SENSITIVITY STUDY 156
11 STRUCTURE RESPONSE 161
IMAGE 4
X
11.1 SIMULATION AND EXPERIMENT 161
11.2 THE EFFECT O F BLAST WAVE ON THE STRUCTURE 163
11.3 THE COLUMN SUBJECTED TO IMPULSIVE LOADING 163
11.3.1 GEOMETRY O F THE COLUMNS 166
11.3.2 BOUNDARY CONDITIONS AND CONNECTION DETAILING 167
11.3.3 LOADING 169
11.3.4 ANALYSIS RESULTS O F COLUMNS SUBJECTED TO BLAST 170
12 OBSERVED FAILURE MECHANISMS 183
13 MITIGATION MEASURES 185
13.1 GLOBAL PROTECTION MEASURES 185
13.2 LOCAL PROTECTION MEASURES 191
13.2.1 DEFINITION O F CROSS SECTION 191
13.2.2 SACRIFICIAL CELLS 191
13.3 GEOMETRICAL NONLINEARITY 194
13.4 INTRODUCTION O F IMPEDANCE MISMATCH 195
13.5 VARIATION O F INFILL MATERIALS OF SACRIFICIAL CELLS 197
13.6 HUTCHINSON S ALL-METAL SANDWICH ELEMENT 203
13.7 SANDWICH ELEMENT ON UNDERLYING STRUCTURE 205
13.8 BLAST PERFORMANCE O F SANDWICH ELEMENTS 207
13.8.1 ELASTIC RESPONSE (IMPULSE LEVEL 1) 208
13.8.2 PARTIAL DENSIFICATION O F THE SACRIFICIAL CELLS (IMPULSE LEVEL 2)
208
13.8.3 FULL DENSIFICATION O F SACRIFICIAL CELLS (IMPULSE LEVEL 3) 214
13.9 COMPARATIVE INVESTIGATION OF PERFORMANCE O F THE LOAD-BEARING
COLUMN 231
13.10 COMPARATIVE ANALYSIS 232
IMAGE 5
XI
13.11 BLAST RESISTANCE PARAMETERS 233
14 DUALITY O F ENERGY ABSORPTION AND INERTIAL EFFECTS 235
15 CONCLUSIONS AND OUTLOOK 239
15.1 LOCAL RESISTANCE DESIGN APPROACH - KEY STRUCTURAL MEMBER 239
15.2 OPTIMIZED STRUCTURAL MEMBER DESIGN FOR TRANSIENT LOADING 239
15.3 SACRIFICIAL CELL DESIGN 240
15.3.1 CONSTITUTIVE MODELING O F FLUID FILLED FOAM (GLYCERIN-SATURATED
POLYPROPYLENE) FOR
HIGH STRAIN RATE LOADING 241
15.3.2 BLAST PERFORMANCE O F ALL-METAL RECTANGULAR HONEYCOMB CELL
STRUCTURE MOUNTED ON
AN UNDERLYING STRUCTURE 241
15.4 DUALITY O F ENERGY ABSORPTION AND INERTIAL EFFECTS 243
16 REFERENCES 245
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| indexdate | 2024-07-10T00:32:21Z |
| institution | BVB |
| language | English |
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| physical | XII, 258 S. Ill., graph. Darst. |
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| spelling | Rutner, Marcus Verfasser aut Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics vorgelegt von Marcus P. Rutner 2012 XII, 258 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Habil.-Schr., 2012 (DE-588)4113937-9 Hochschulschrift gnd-content DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025697142&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Rutner, Marcus Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics |
| subject_GND | (DE-588)4113937-9 |
| title | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics |
| title_auth | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics |
| title_exact_search | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics |
| title_full | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics vorgelegt von Marcus P. Rutner |
| title_fullStr | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics vorgelegt von Marcus P. Rutner |
| title_full_unstemmed | Load-carrying columns subjected to impulsive loading protection technology in high-speed-dynamics vorgelegt von Marcus P. Rutner |
| title_short | Load-carrying columns subjected to impulsive loading |
| title_sort | load carrying columns subjected to impulsive loading protection technology in high speed dynamics |
| title_sub | protection technology in high-speed-dynamics |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025697142&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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