...J. Li; M. Ostoja-Starzewski Fractal patterns are observed in computational mechanics of elastic-plastic transitions in two models of linear elastic/perfectly plastic random heterogeneous materials: (1) a composite made of locally isotropic grains with weak random fluctuations in elastic moduli...

... is presented. 09 08 2006 11 09 2006 09 05 2008 compressive strength concrete compression test concrete dissipated energy density size effects microstructural disorder fractals Scale effects have received a strong interest in the past few decades. With the term scale...

...Jeng Luen Liou; Jen Fin Lin In the present study, the fractal theory is applied to modify the conventional model (the Greenwood and Williamson model) established in the statistical form for the microcontacts of two contact surfaces. The mean radius of curvature ( R ) and the density of asperities...

... at modest density ratios. 29 07 2004 06 11 2005 mixing shock wave effects fractals turbulence bubbles two-phase flow flow instability Professor Charles Speziale made significant contribution to the area of self-preservation in isotropic decaying of turbulence ( 1 ). He...

...Jung Ching Chung; Jen Fin Lin The fractal parameters (fractal dimension and topothesy), describing the contact behavior of rough surface, were considered as constant in the earlier models. However, their results are often significantly different from the experimental results. In the present study...

..., an averaging procedure of Zener, a similarity solution for an infinite beam, asymptotics, heuristics, and numerics. Results obtained include short-time asymptotic estimates for various dynamic quantities, as well as a numerical demonstration of fractal behavior in the response. The leading order displacement...

... properly by fractal models. This paper proposes a normal contact model for a fractal surface in contact with a rigid smooth half-space. The fractal surface is constructed based on the Cantor set and composed of elastic-perfectly plastic material. Asymptotic continuous expressions for the load-displacement...

...A. Carpinteri, Professor,; N. Pugno, Researcher, Based on the fractal particle size distribution, a fragmentation theory for quasi-brittle materials is herein developed. The results are three simple and powerful universal laws for the multiscale energy dissipation under impact and explosion...

... solids and shown to have two possible forms. The effect of fractality of fracture surfaces on the powers of stress and couple-stress singularity is studied. We obtain the orders of stress and couple-stress singularities at the tip of a fractal crack in a micropolar solid using dimensional analysis...

..., 2000. Associate Editor: J. R. Barber. 11 Aug 1999 22 May 2000 rough surfaces friction elasticity mechanical alloying surface topography fractals mechanical contact Bowden and Tabor ( 1 BT, in the following) state that friction is dictated by “adhesion (cold weld...