..., and interstitial bone. Based on close experimental observations, a Monte Carlo algorithm is implemented to build the natural bone composite microstructure. To represent the hierarchical nature of bone, the algorithm incorporates macroscopic morphological components, such as its porosity and osteonal volume...

...Eitan Hirsch; Meir Mayseless Jets that emanate from high density porous liners are most widely used for penetration into Earth materials. These shaped-charges differ from those that contain solid copper liners in three major aspects: the porosity, the usually higher initial density, and the very...

... existing solutions are only applicable to single-porosity and single-permeability models, which could fall short when the porous material exhibits multiporosity and/or multipermeability characteristics, such as secondary porosity or fracture. This paper extends the plane strain and axisymmetric Mandel-type...

... contain dilute amount of voids (about 5% or less, as in sintered materials), the scatter is even wider. Engineeringwise there is a clear need to assess in advance the long term fatigue behavior of such metals (in particular, the allowable stress amplitude), at their various porosity levels , in order...

...-strain curve of a porous SMA with open porosity where two kinds of pore shapes—spherical and ellipsoidal—are used. It is noted that the stress-strain curve of the ellipsoidal pore-shape assumption is closer to the experimental curve than that of the spherical pore-shape assumption. This indicates...

... compaction waves having a dispersed two-wave structure are predicted for mild impact of dense HMX (porosity ∼ 19 % ), and steady supersonic compaction waves having a discontinuous solid shock followed by a thin compaction zone are predicted for stronger impact. Short duration hot spots having peak...

... to the thermal expansion coefficients of the solid–fluid system, the porosity to the medium, and the Biot’s effective stress coefficient tensor, and is given as 28 29 (3) β sf = α ij α ij s + α f − α kk s ϕ in which α f is the volumetric...

... size 35 microns were used to make pellets of 35% porosity and 70% liquid saturation. As the capillary number increased, the failure mode changed from brittle cracking to ductile plastic flow. This change coincided with the transition from strain-rate independent flow stress to strain-rate dependent...

... to the average stresses in the matrix and are determined as σ ij ∞ = 1 − p − 1 σ ij e , where σ ij e are the average stresses in the porous medium, and p is the porosity of the material in the final state. Note that the last equation takes place...

... in soil testing (e.g., Bardet, 18 ). modelling porous materials porosity elastoplasticity mechanical stability flow through porous media 21 Apr 1999 14 Sept 1999 31 10 2002 Contributed by the Applied Mechanics Division of THE AMERICAN SOCIETY OF MECHANICAL...

... within a water-saturated Ridgefield sandstone environment, is presented and several limiting cases are examined. Effects of porosity, frame stiffness, source size, and the interface permeability condition on the impedance values are presented and discussed. Contributed by the Applied Mechanics...

...G. Maier 16 08 2002 mechanical stability buckling elastoplasticity plasticity porosity kinematics inhomogeneous media In this paper, on page 800, D = should be deleted from Eq. (2.4). 2002 ASME ...

... until four months after final publication of the paper itself in the ASME JOURNAL OF APPLIED MECHANICS . 28 February 2001 mechanical stability buckling elastoplasticity plasticity porosity kinematics inhomogeneous media The main lasting contributions of Warner Koiter...