Rigidity and normal modes in random matrix spectra
β Scribed by A. Andersen; A.D. Jackson; H.J. Pedersen
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 472 KB
- Volume
- 650
- Category
- Article
- ISSN
- 0375-9474
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Equations of motion for non-proportionally damped structures cannot be decoupled by using the real normal modes. For such structures, the complex normal modes are in common use for this purpose, but for the validation of finite element mass and stiffness matrices where physical damping matrices are
## Abstract Raman and infrared spectroscopic studies of benzoic acid dimers and crystals have been made. Molecular and crystal normal modes have been calculated. An assignment of the observed spectra has been proposed and some specific modes discussed.
The vibrational spectrum of 1,2,5-telluradiazole is investigated in the 400&50 cm-' region by i.r. and Raman spectroscopy. Infrared spectra of solid samples are also measured at 10 K. A satisfactory assignment of all the fundamentals is obtained by employing a valence force field which provided a c