On the statics of silos

被引：28

作者：

Evesque, P

de Gennes, PG

机构：

[1] Ecole Cent Paris, Lab Mecan Sols & Struct, F-92295 Chatenay Malabry, France

[2] Coll France, Phys Mat Condensee Lab, F-75231 Paris 05, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE B-MECANIQUE PHYSIQUE ASTRONOMIE | 1998年 / 326卷 / 11期

关键词：

granular materials; friction; silos; stress-strain relations; plasticity;

D O I：

10.1016/S1251-8069(98)80011-0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The distribution of vertical pressures in a silo filled with grains has been described long ago by Janssen, with two basic assumptions, one on. internal behavior; and one on wall friction. The phenomenological coefficient K-J of Janssen, describing the internal behavior; has been estimated, using apr elastic description of the compression (P. E.). We discuss here ii the precise definition of material displacements ii) the wall function: this is fully mobilised only if the local displacement is larger than a certain 'anchoring length' Delta (of order one micron). From this, we define a characteristic height H*(Delta), between which the Janssen picture fails. (C) Academie des Sciences/Elsevier, Paris.

引用

页码：761 / 766

页数：6

共 10 条

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deGennes, PG
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Evesque, P
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[10] VANEL L, IN PRESS

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