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Polymeric foam properties derived from 3D images

Saadatfar, M.; Knackstedt, M.A.; Arns, C.H.; Sakellariou, A. - In: Physica A: Statistical Mechanics and its Applications 339 (2004) 1, pp. 131-136

industrial polymer foamed materials. Results for thermal conductivity and elasticity show little scatter and provide the basis …

Persistent link: https://www.econbiz.de/10010874369

Elasticity of strongly stretched ssDNA

Tkachenko, Alexei V. - In: Physica A: Statistical Mechanics and its Applications 384 (2007) 1, pp. 133-136

We present a simple model which describes elastic response of single-stranded DNA (ssDNA) to stretching, including the regime of very high force (up to 1000pN). ssDNA is modelled as a discrete persistent chain, whose ground state is a zigzag rather than a straight line configuration. This mimics...

Persistent link: https://www.econbiz.de/10010874494

Wrinkling of plates coupled with soft elastic media

Groenewold, Jan - In: Physica A: Statistical Mechanics and its Applications 298 (2001) 1, pp. 32-45

If a rigid plate is subjected to stress and attached to a soft elastic medium, it is very likely that this stress is relieved by wrinkling: The plate buckles into a large number of waves. First the basic equation for wrinkling is rederived. Then the more complicated case of isotropic wrinkling...

Persistent link: https://www.econbiz.de/10010589171

Turbulent drag reduction in one and two dimensions

Odijk, Theo - In: Physica A: Statistical Mechanics and its Applications 298 (2001) 1, pp. 140-154

Drag reduction is investigated in one- and two-dimensional turbulent flows that are stationary and homogeneous. In the two-dimensional case, the polymer chains are deformed though advected passively through the Kraichnan cascades within a scaling analysis. The typical rate of shear must then be...

Persistent link: https://www.econbiz.de/10010589716

Macroscopic properties of fractured porous media

Sangare, D.; Thovert, J.-F.; Adler, P.M. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 5, pp. 921-935

The macroscopic properties of fractured porous media locally governed by a Laplace equation are determined by several methods. The first one consists in discretizing the porous medium and the fractures and in solving the Laplace equation in the discretized structure. The other methods consist in...

Persistent link: https://www.econbiz.de/10010590660

On distribution of contact forces in random granular packings

Ngan, A.H.W. - In: Physica A: Statistical Mechanics and its Applications 339 (2004) 3, pp. 207-227

In an earlier paper, Ngan (Phys. Rev. E 68 (2003) 011301) proposed a statistical mechanics-based theory to predict the mathematical form of the probability force distribution of contact forces in stressed granular packings. However, the wrong choice of the mean-force constraint in that work...

Persistent link: https://www.econbiz.de/10011059158

On the asymmetric elasticity of twisted dsDNA

Zhou, Zicong; Lai, Pik-Yin - In: Physica A: Statistical Mechanics and its Applications 350 (2005) 1, pp. 70-83

intrinsic asymmetric elasticity under twisting are also studied. …

Persistent link: https://www.econbiz.de/10011060958

Viscoelastic behavior of stock indices

Gündüz, Güngör; Gündüz, Yalin - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 24, pp. 5776-5784

–2009. NASDAQ-composite displayed very high elasticity while NASDAQ-100 displayed the highest fluidity in the time period considered …

Persistent link: https://www.econbiz.de/10011061485

Physics of cell elasticity, shape and adhesion

Safran, S.A.; Gov, N.; Nicolas, A.; Schwarz, U.S.; … - In: Physica A: Statistical Mechanics and its Applications 352 (2005) 1, pp. 171-201

properties of biological cells. Particular emphasis is placed on the role of the cytoskeleton and cell elasticity and we contrast … adhere to a substrate are strongly determined by the cytoskeletal elasticity that can be varied experimentally by drugs that …, molecular motors) within the cell modify cytoskeletal elasticity and tension. …

Persistent link: https://www.econbiz.de/10011062190

Scalar and vectorial percolation in compressed expanded graphite

Celzard, A; Krzesiñska, M; Marêché, J.F; Puricelli, S - In: Physica A: Statistical Mechanics and its Applications 294 (2001) 3, pp. 283-294

is also consistent with critical exponents of elasticity found in both kind of samples. Hence, compressed expanded …

Persistent link: https://www.econbiz.de/10011064486