Please use this identifier to cite or link to this item:
AuthorsCasula, G.* 
Carcione, J. M.* 
TitleGeneralized Mechanical Model Analogies of Linear Viscoelastic Behaviour
Issue DateDec-1992
Series/Report no.Vol. XXXIV - N. 136
Wave Propagation
viscoelastic Behaviour
Linear standard Models
Subject Classification04. Solid Earth::04.01. Earth Interior::04.01.05. Rheology 
Abstractabstract - The description of wave propagation by a viscoelastic rheology allows for the introduction of two important phenomena: wave dissipation, i.e., the conversion of motion into heat, and velocity dispersion, the phenomenon in which two different Fourier components travel with different velocities. In this work, we consider a mechanical representation of viscoleastic media, which in virtue of its simplicity constitues a useful tool to model the variety of dissipation mechanisms present in real media. Examples of simulated wavefields in these type of media can be found, for instance, in the works of Carcione et al. (1988a,b), where the equations are based on the standard linear solid model. Here we analyze in detail the physical properties and capabilities of different mechanical models, and give some hints to obtain realistic models of attenuation and velocity dispersion; for example, the constant Q phenomenon and the set of relaxation peaks over a given frequency band.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
Casula_BGTA_1992.pdfarticle545.99 kBAdobe PDFView/Open
Show full item record

Page view(s)

Last Week
Last month
checked on Aug 16, 2017


checked on Aug 16, 2017

Google ScholarTM