Far-field radiation characteristics of elastic waves and the elastodynamic radiation condition

✍ Scribed by Tan, T. H.

• Publisher: Springer
• Year: 1975
• Tongue: English
• Weight: 491 KB
• Volume: 31
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00418047

✦ Synopsis

In the present paper, a radiation condition for time-harmonic elastic waves in a homogeneous, isotropic, perfectly elastic medium is presented. It is based upon certain physical considerations pertaining to the elastodynamic radiation generated by a source of finite extent. In it, the particle displacement on and the traction across a sphericaI surfaee around the source occur. Separate conditions are imposed on the radial and the angular parts of these quantities. It is shown that the resulting far-field radiation characteristics for the particle displacement are in accordance with the properties that could be expected from the physical considerations we have started with. § 1. Introduction * The research reported in this paper has been supported by the Netherlands orgailization for the advancement of pure research (Z.W.O.).