An Analysis of the Generalized ~u~~l~-sl~~~ng Models for ~~~esio~less Granular Materials
نویسنده
چکیده
A WELL-KNOWN class of constitutivc relations for cohcsionless granular rr~tetials are the dnuble*slidin% models. The double-sliding model proposed by SPEXER (3. Mecfz. Pfys. .Wi& KL 337. 19643 for incompresfibie mate&& as wetf as &use of SPENCER and KINGST~ ~Rlml. Arm. fZ 194. 1874) md ~~~~~~~~~~ and Cowm (J. ~Mxk Hq-3. Sd&fs. 26,269. lCtfS~ 6~ mqxessihie mamids as-e generaked lo &scribe the unsteady ffow ofcnhesionless granuiax mate&k. These models are anaiyscd and it is shown that they lead to equations that are rtot well-posed. X*lpiications of this finding arc discussed,
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تاریخ انتشار 2002