MATLAB® software is required to run the .m files in this section. File decompression software, such as Winzip® or StuffIt®, is required to open the .zip files in this section. 13.811 is split into two segments: structural dynamics for the first half of the semester and acoustics for the second half.
NOTE: Only the acoustics component is available on this site. The structural dynamics component has not yet been incorporated into OCW.
| Structural Dynamics | | 1-13 | Structural Dynamics | | | | Acoustics | | 14 | Introduction
The Acoustic Wave Equation | Schmidt | (PDF) | | 15 | Helmholtz Equation
Plane Waves
Wavenumber Representation | Schmidt | (PDF) | | 16 | Radiation from Infinite Plate
2-d Wavenumber Space
Spherical Waves from Point Source | Schmidt | (PDF - 1.2 MB) | | 17 | Directivity Function
Radiation from Baffled Rectangular Piston | Schmidt | (PDF) | | 18 | Radiation from Planar Sources | Schmidt | (PDF)
Supporting Files (ZIP) (The ZIP file contains: circ.m, circ_arr.m, dba.m, dbp.m, rect.m, rect_arr.m, sinc.m, and wavei.m.) | | 19 | Radiation from Elastic Plates | Schmidt | (PDF)
Supporting Files (ZIP) (The ZIP file contains: plate.m.) | | 20 | Quiz | | | | 21 | Spherical Waves
Spherical Harmonics | Battle | (PDF) | | 22 | Spherical Multipole Radiation | Battle | (PDF) | | 23 | Scattering from Spheres | Battle | | | 24 | Cylindrical Waves | Battle | (PDF) | | 25 | Helical Waves | Battle | (PDF)
Supporting Files (ZIP) (This ZIP file contains: readme.txt, cylrad.m, dH_ndx.m, dhndx.m, dipole.m, djndx.m, H_n.m, hard_sphere.m, helical.m, hn.m, jn.m, lpoly.m, monopole.m, sharm.m, soft_sphere.m, Ymn.m, and yn.m.) | | 26 | Radiation from Cylinders | Battle | |
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