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Title: Plastic flow in very low temperature regime within annular micropores |
Authors: |
Author Full Names: Chu, Z. Kwang-Hua |
Source: ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK 60 (3): 529-542 MAY 2009 |
Language: English |
Document Type: Article |
Author Keywords: Low-temperature plasticity; glass material; asymptotic analysis |
KeyWords Plus: CRYSTAL PLASTICITY; STRAIN-RATE; DEFORMATION; STRESS; METALS; SHEAR; LOCALIZATION; STEEL; RATES |
Abstract: The rate of deformation for glassy (amorphous) matter confined in microscopic domain at very low temperature regime was investigated using a rate-state-dependent model considering the shear thinning behavior which means, once material being subjected to high shear rates, the viscosity diminishes with increasing shear rate. The preliminary results show that there might be the enhanced rate of deformation and (shear) yield stress due to the almost vanishing viscosity in micropores subjected to some surface conditions: The relatively larger roughness (compared to the macroscopic domain) inside micropores and the slip. As the pore size decreases, the surface-to-volume ratio increases and therefore, surface roughness will greatly affect the (plastic) flow in micropores. By using the boundary perturbation method, we obtained a class of microscopic fields for the rate of deformation and yield stress at low temperature regime with the presumed small wavy roughness distributed along ! the walls of an annular micropore. |
Reprint Address: Chu, ZKH, 24 Lane 260,Sect 1,Rd Muja, Taipei 11646, Taiwan. |
Research Institution addresses: [Chu, Z. Kwang-Hua] Nankai Univ, Chern Shiing Shen Inst Math, Tianjin 300071, Peoples R China |
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Cited Reference Count: 38 |
Times Cited: 0 |
Publisher: BIRKHAUSER VERLAG AG; VIADUKSTRASSE 40-44, PO BOX 133, CH-4010 BASEL, SWITZERLAND |
Subject Category: Mathematics, Applied |
ISSN: 0044-2275 |
DOI: 10.1007/s00033-008-7153-8 |
IDS Number: 434UF |
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