Dynamic modelling of some nonlinear materials
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Claes Hedberg |
| Title: | Dynamic modelling of some nonlinear materials |
| Translated title: | Dynamisk modellering av några material |
| Conference name: | FORUM ACUSTICUM ( European Acoustical Association etc) SEVILLA September 16-20, 2002 |
| Year: | 2002 |
| Pagination: | 6 pages |
| City: | Sevilla, Spain |
| Organization: | Blekinge Institute of Technology |
| Department: | Dept. of Mechanical Engineering (Institutionen för maskinteknik) Dept. of Mechanical Engineering S-371 79 Karlskrona +46 455 38 50 00 http://www.ima.bth.se/ |
| Authors e-mail: | claes.hedberg@bth.se |
| Language: | English |
| Abstract: | A nonlinear layer can be a model for a cloud of gas bubbles in a liquid, a crack or split plane in a solid, or contact between two tighted surfaces. Solutions were derived for media under strong load. Numerical calculations based on Preisach-Mayergoyz space description (nonlinear stress-strain relationships typical for solids containing mesoscopic inhomogeneities or defects) have given results like those obtained from LISA (see results by Delsanto). IMVITED. Non-uniform massdistribution of grains immersed into a vibrating fluid create internal forces which is responsible for generation of higher harmonics. Tests on slow dynamics were performed. |
| Subject: | Mechanical Engineering\Structural Dynamics Mechanical Engineering\General |
| Keywords: | nonlinear material description, nonlinear acoustic crack detection, nonlinear elastic wave spectrosopy, nonlinear nondestructive testing, slow dynamics |
