Packing of Compressible Granular Materials

by: Hernán A Makse, David L Johnson, Lawrence M Schwartz

Physical Review Letters, Vol. 84, No. 18. (1 May 2000), 4160.

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摘要

3D computer simulations and experiments are employed to study random packings of compressible spherical grains under external confining stress. In the rigid ball limit; we find a continuous transition in which the stress vanishes as (φ-φ c ) β ; where φ is the (solid phase) volume density. The value of φ c depends on whether the grains interact via only normal forces (giving rise to random close packings) or by a combination of normal and friction generated transverse forces (producing random loose packings). In both cases; near the transition; the system's response is controlled by localized force chains.

@article{citeulike:2280866, abstract = {3D computer simulations and experiments are employed to study random packings of compressible spherical grains under external confining stress. In the rigid ball limit; we find a continuous transition in which the stress vanishes as (φ-φ c ) β ; where φ is the (solid phase) volume density. The value of φ c depends on whether the grains interact via only normal forces (giving rise to random close packings) or by a combination of normal and friction generated transverse forces (producing random loose packings). In both cases; near the transition; the system's response is controlled by localized force chains.}, author = {Makse, Hern\'{a}n A. and Johnson, David L. and Schwartz, Lawrence M. }, citeulike-article-id = {2280866}, doi = {10.1103/PhysRevLett.84.4160}, journal = {Physical Review Letters}, keywords = {force, grains, packing, qualifier}, month = {May}, number = {18}, pages = {4160+}, posted-at = {2008-04-26 23:03:14}, priority = {2}, publisher = {American Physical Society}, title = {Packing of Compressible Granular Materials}, url = {http://dx.doi.org/10.1103/PhysRevLett.84.4160}, volume = {84}, year = {2000} }

RIS record

TY - JOUR ID - citeulike:2280866 L3 - citeulike-article-id:2280866 TI - Packing of Compressible Granular Materials JF - Physical Review Letters VL - 84 IS - 18 SP - 4160 PB - American Physical Society N2 - 3D computer simulations and experiments are employed to study random packings of compressible spherical grains under external confining stress. In the rigid ball limit; we find a continuous transition in which the stress vanishes as (φ-φ c ) β ; where φ is the (solid phase) volume density. The value of φ c depends on whether the grains interact via only normal forces (giving rise to random close packings) or by a combination of normal and friction generated transverse forces (producing random loose packings). In both cases; near the transition; the system's response is controlled by localized force chains. KW - force KW - grains KW - packing KW - qualifier AU - Makse, Hernán AU - Johnson, David AU - Schwartz, Lawrence PY - 2000/05/01/ UR - http://dx.doi.org/10.1103/PhysRevLett.84.4160 ER -

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