Numerical simulations in room acoustics using direct coupling techniques and finite elements:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Berlin
Logos-Verl.
2012
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| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | 4, X, 127 S. graph. Darst. |
| ISBN: | 9783832531393 |
Staff View
MARC
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Record in the Search Index
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| adam_text | IMAGE 1
CONTENTS
ACKNOWLEDGMENTS I
ABBREVIATIONS II
SCRIPTS A N D SYMBOLS IV
1 INTRODUCTION 1
1.1 MOTIVATION 1
1.2 STATE OF THE ART 2
1.3 LAYOUT OF THE THESIS 3
2 ACOUSTICAL BASICS A N D GOVERNING EQUATIONS 5
2.1 CONSERVATION LAWS 5
2.2 STATE FORMULATION OF THE GOVERNING EQUATIONS 12
2.3 FREQUENCY FORMULATION OF THE GOVERNING EQUATIONS 14
2.4 SOUND SOURCES AND SPECIFIC PROPERTIES OF SOUND 17
2.5 SELECTED SOLUTIONS FOR THE WAVE EQUATION AND THE HELMLIOLTZ EQUATION
. . 19
3 MODAL-BASED FLUID S T R U C T U R E COUPLING M E T H O D 2 5
3.1 COUPLING METHOD IN THE FREQUENCY DOMAIN 25
3.2 NORMAL AND COUPLING MODES AS BASIS FUNCTIONS 34
3.3 BOUNDARY MODELS 41
3.4 SOUND SOURCE MODELS 47
4 NUMERICAL M E T H O D S FOR COMPUTING T H E BASIS FUNCTIONS 5 1
4.1 SPECTRAL METHOD 51
4.2 SPECTRAL FINITE ELEMENT METHOD 56
4.3 COMPARISON BETWEEN SPECTRAL METHOD AND SPECTRAL FINITE ELEMENT
METHOD 64 4.4 STRATEGY FOR SMOOTH DERIVATIVES 69
5 NUMERICAL SIMULATIONS 7 7
5.1 POINT IMPEDANCE AND SINGLE LAYER ABSORBER 77
5.2 COUPLING OF AIR COMPONENTS 81
5.3 TRANSMISSION PROBLEM 87
5.4 CAR INTERIOR FSI 91
3
HTTP://D-NB.INFO/1022253948
IMAGE 2
CONTENTS
6 UNCERTAINTY ANALYSIS 9 5
6.1 CHARACTERIZATION OF UNCERTAINTY AND METHODS 96
6.2 PARAMETRIC UNCERTAINTY IN ROOM ACOUSTICS 100
7 CONCLUDING REMARKS 107
APPENDIX A: MATHEMATICAL TOOLS A N D T H E FOURIER TRANSFORM 109
A.L PRELIMINARIES 109
A.2 FOURIER TRANSFORM 112
APPENDIX B: IMPEDANCE BOUNDARY CONDITION 117
B . L MECHANICAL IMPEDANCE 117
B.2 ACOUSTIC IMPEDANCE 119
BIBLIOGRAPHY 1 2 1
4
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| indexdate | 2024-07-10T00:21:12Z |
| institution | BVB |
| isbn | 9783832531393 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-025159521 |
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| physical | 4, X, 127 S. graph. Darst. |
| publishDate | 2012 |
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| publisher | Logos-Verl. |
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| spelling | Pospiech, Martina Verfasser aut Numerical simulations in room acoustics using direct coupling techniques and finite elements Martina Pospiech Berlin Logos-Verl. 2012 4, X, 127 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Zugl.: München, Techn. Univ., Diss., 2011 Fluid-Struktur-Wechselwirkung (DE-588)4314754-9 gnd rswk-swf Spektralmethode (DE-588)4224817-6 gnd rswk-swf Raumakustik (DE-588)4048567-5 gnd rswk-swf Finite-Elemente-Methode (DE-588)4017233-8 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Raumakustik (DE-588)4048567-5 s Fluid-Struktur-Wechselwirkung (DE-588)4314754-9 s Spektralmethode (DE-588)4224817-6 s Finite-Elemente-Methode (DE-588)4017233-8 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025159521&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Pospiech, Martina Numerical simulations in room acoustics using direct coupling techniques and finite elements Fluid-Struktur-Wechselwirkung (DE-588)4314754-9 gnd Spektralmethode (DE-588)4224817-6 gnd Raumakustik (DE-588)4048567-5 gnd Finite-Elemente-Methode (DE-588)4017233-8 gnd |
| subject_GND | (DE-588)4314754-9 (DE-588)4224817-6 (DE-588)4048567-5 (DE-588)4017233-8 (DE-588)4113937-9 |
| title | Numerical simulations in room acoustics using direct coupling techniques and finite elements |
| title_auth | Numerical simulations in room acoustics using direct coupling techniques and finite elements |
| title_exact_search | Numerical simulations in room acoustics using direct coupling techniques and finite elements |
| title_full | Numerical simulations in room acoustics using direct coupling techniques and finite elements Martina Pospiech |
| title_fullStr | Numerical simulations in room acoustics using direct coupling techniques and finite elements Martina Pospiech |
| title_full_unstemmed | Numerical simulations in room acoustics using direct coupling techniques and finite elements Martina Pospiech |
| title_short | Numerical simulations in room acoustics using direct coupling techniques and finite elements |
| title_sort | numerical simulations in room acoustics using direct coupling techniques and finite elements |
| topic | Fluid-Struktur-Wechselwirkung (DE-588)4314754-9 gnd Spektralmethode (DE-588)4224817-6 gnd Raumakustik (DE-588)4048567-5 gnd Finite-Elemente-Methode (DE-588)4017233-8 gnd |
| topic_facet | Fluid-Struktur-Wechselwirkung Spektralmethode Raumakustik Finite-Elemente-Methode Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025159521&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT pospiechmartina numericalsimulationsinroomacousticsusingdirectcouplingtechniquesandfiniteelements |