Elasticity of randomly diluted central force networks under tension

doi:10.1103/PhysRevE.68.055101

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/27848

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題名:	Elasticity of randomly diluted central force networks under tension
作者:	Zhou, Zicong;Joós, Béla;Lai, Pik-Yin
貢獻者:	淡江大學物理學系
關鍵詞:	Computer simulation;Elastic moduli;Entropy;Extrapolation;Least squares approximations;Particle size analysis;Percolation (solid state);Random processes;Rigidity;Stress concentration;Stress relaxation;Surface tension;Isotropic lattices;Normalization methods;Random networks;Shear relaxation;Elasticity
日期:	2003-11-01
上傳時間:	2013-07-09 15:17:44 (UTC+8)
出版者:	College Park: American Physical Society
摘要:	We study the rigidity of two-dimensional site-diluted central force triangular networks under tension. We calculate the shear modulus μ directly and fit it with a power law of the form μ∼(p-p)f, where p is the concentration of sites, p its critical value, and f the critical exponent. We find that the critical behavior of μ is quite sensitive to tension. As the tension is increased there is at first a sharp drop in the values of both p* and f, followed by a slower decrease towards the values of the diluted Gaussian spring network (or random resistor network). We find that the size of the critical region is also sensitive to tension. The tension-free system has a narrower critical regime with the power law failing for p>0.8. In contrast, a small tension is sufficient to extend the power law to near p=1. The physical basis for these behaviors is discussed.
關聯:	Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) 68(5), 055101(R)(5pages)
DOI:	10.1103/PhysRevE.68.055101
顯示於類別:	[物理學系暨研究所] 期刊論文

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