Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Dapp, Wolf B."'
Autor:
Müser, Martin H., Dapp, Wolf B.
We present a contact mechanics problem, which we consider to be representative for contacts between nominally flat surfaces. The main ingredients of the mathematically fully defined contact problem are: Self-affine roughness, linear elasticity, the s
Externí odkaz:
http://arxiv.org/abs/1512.02403
Autor:
Dapp, Wolf B., Müser, Martin H.
Percolation is a concept widely used in many fields of research and refers to the propagation of substances through porous media (e.g., coffee filtering), or the behaviour of complex networks (e.g., spreading of diseases). Percolation theory asserts
Externí odkaz:
http://arxiv.org/abs/1512.00186
Autor:
Dapp, Wolf B., Müser, Martin H.
We study numerically local models for the mechanical contact between two solids with rough surfaces. When the solids softly touch either through adhesion or by a small normal load $L$, contact only forms at isolated patches and fluids can pass throug
Externí odkaz:
http://arxiv.org/abs/1501.06290
We systematically check explicit and implicit assumptions of Persson's contact mechanics theory. It casts the evolution of the pressure distribution ${\rm Pr}(p)$ with increasing resolution of surface roughness as a diffusive process, in which resolu
Externí odkaz:
http://arxiv.org/abs/1406.6151
The description of elastic, nonadhesive contacts between solids with self-affine surface roughness seems to necessitate knowledge of a large number of parameters. However, few parameters suffice to determine many important interfacial properties as w
Externí odkaz:
http://arxiv.org/abs/1311.7547
Autor:
Dapp, Wolf B., Müser, Martin H.
Publikováno v:
Eur. Phys. J. B (2013) 86: 337
Force fields uniquely assign interatomic forces for a given set of atomic coordinates. The underlying assumption is that electrons are in their quantum-mechanical ground state or in thermal equilibrium. However, there is an abundance of cases where t
Externí odkaz:
http://arxiv.org/abs/1308.3573
Publikováno v:
Phys. Rev. Lett. 108, 244301 (2012)
We study fluid flow at the interfaces between elastic solids with randomly rough, self-affine surfaces. We show by numerical simulation that elastic deformation lowers the relative contact area at which contact patches percolate in comparison to trad
Externí odkaz:
http://arxiv.org/abs/1308.3449
Autor:
Dapp, Wolf B., Müser, Martin H.
Publikováno v:
J. Chem. Phys. 139, 064106 (2013)
Batteries are pivotal components in overcoming some of today's greatest technological challenges. Yet to date there is no self-consistent atomistic description of a complete battery. We take first steps toward modeling of a battery as a whole microsc
Externí odkaz:
http://arxiv.org/abs/1308.3424
We review recent results of non-ideal magnetohydrodynamic models for the fragmentation of molecular clouds and the collapse of cloud cores to form protostar-disk systems. Thin-disk models can elucidate many aspects of the physical problem and allow t
Externí odkaz:
http://arxiv.org/abs/1304.1956
Publikováno v:
The 11th Asian-Pacific Regional IAU Meeting 2011 NARIT Conference Series, Vol. 1, c 2013 S. Komonjinda, Y. Y. Kovalev, and D. Ruffolo, eds
A non-ideal MHD collapse calculation employing the axisymmetric thin-disk approximation is used to resolve cloud core collapse down to the scales of the second (stellar) core. Rotation and a magnetic braking torque are included in the model, and the
Externí odkaz:
http://arxiv.org/abs/1112.6050