图书介绍
振动声学 英文PDF|Epub|txt|kindle电子书版本网盘下载
- Anders.C.Nilsson，刘碧龙著 著
- 出版社： 北京：科学出版社
- ISBN：9787030336248
- 出版时间：2012
- 标注页数：403页
- 文件大小：13MB
- 文件页数：420页
- 主题词：声－振动体－研究－英文
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图书目录
Chapter 1 MECHANICAL SYSTEMS WITH ONE DEGREE OF FREEDOM1
1.1 A simple mass-spring system1
1.2 Free vibrations6
1.3 Transient vibrations12
1.4 Forced harmonic vibrations21
1.5 Fourier series25
1.6 Complex notation27
Problems31
Chapter 2 FREQUENCY DOMAIN34
2.1 Introduction34
2.2 Frequency response36
2.3 Correlation functions39
2.4 Spectral density42
2.5 Examples of spectral density44
2.6 Coherence48
2.7 Time averages of power and energy49
2.8 Frequency response and point mobility functions55
2.9 Loss factor61
2.10 Response of a 1-DOF system,a summary66
Problems69
Chapter 3 WAVES IN SOLIDS72
3.1 Stresses and strains72
3.2 Losses in solids81
3.3 Transverse waves86
3.4 Longitudinal waves89
3.5 Torsional waves93
3.6 Waves on a string95
3.7 Bending or flexural waves-beams96
3.8 Waves on strings and beams-a comparison104
3.9 Flexural waves-plates107
3.10 Orthotropic plates114
3.11 Energy flow116
Problems118
Chapter 4 INTERACTION BETWEEN LONGITUDINAL AND TRANSVERSE WAVES120
4.1 Generalised wave equation120
4.2 Intensity125
4.3 Coupling between longitudinal and transverse waves126
4.4 Bending of thick beams/plates131
4.5 Quasi longitudinal waves in thick plates146
4.6 Rayleigh waves149
4.7 Sandwich plates-general150
4.8 Bending of sandwich plates152
4.9 Equations governing bending of sandwich plates153
4.10 Wavenumbers of sandwich plates156
4.11 Bending stiffness of sandwich plates158
4.12 Bending of Ⅰ-beams160
Problems163
Chapter 5 WAVE ATTENUATION DUE TO LOSSES AND TRANSMISSION ACROSS JUNCTIONS165
5.1 Excitation and propagation of L-waves166
5.2 Excitation and propagation of F-waves170
5.3 Point excited infinite plate175
5.4 Spatial Fourier transforms180
5.5 Added damping187
5.6 Losses in sandwich plates193
5.7 Coupling between flexural and inplane waves197
5.8 Transmission of F-waves across junctions,diffuse incidence202
5.9 Transmission of F-waves across junctions,normal incidence210
5.10 Atenuation due to change of cross section211
5.11 Some other methods to increase attenuation215
5.12 Velocity level differences and transmission losses216
5.13 Measurements on junctions between beams220
Problems227
Chapter 6 LONGITUDINAL VIBRATIONS OF FINITE BEAMS230
6.1 Free longitudinal vibrations in finite beams230
6.2 Forced longitudinal vibrations in finite beams240
6.3 The mode summation technique247
6.4 Kinetic energy of vibrating beam250
6.5 Mobilities256
6.6 Mass mounted on a rod259
6.7 Transfer matrices263
Problems269
Chapter 7 FLEXURAL VIBRATIONS OF FINITE BEAMS271
7.1 Free flexural vibrations of beams271
7.2 Orthogonality and norm of eigenfunctions281
7.3 Forced excitation of F-waves285
7.4 Mode summation and modal parameters289
7.5 Point mobility and power296
7.6 Transfer matrices for bending of beams301
7.7 Infinite periodic structures305
7.8 Forced vibration of periodic structures311
7.9 Finite composite beam316
Problems322
Chapter 8 FLEXURAL VIBRATIONS OF FINITE PLATES325
8.1 Free vibrations of simply supported plates326
8.2 Forced response of a simply supported plate332
8.3 Forced excitation of a rectangular plate with two opposite sides simply supported338
8.4 Power and energy343
8.5 Mobility of plates348
8.6 The Rayleigh-Ritz method351
8.7 Application of the Rayleigh-Ritz method358
8.8 Non flat plates365
8.9 The effect of an added mass or mass-spring system on plate vibrations367
8.10 Small disturbances371
8.11 Plates mounted on resilient layers375
8.12 Vibration of orthotropic plates380
8.13 Circular and homogeneous plates381
8.14 Bending of plates in tension387
Problems390
References393
Index398