..., 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...

... ) = 0 . The end-result is 7 3 p max 2 σ 0 2 + 2 q 1 f   cosh ( q 2 p max σ 0 ) = 1 + q 3 f 2 (plotted in Fig. 4 ) showing a decay of p max with the increase in the material porosity. The restricted permissible...

... it is not zero in the second and fourth stage. That is the same as in Sec. 2 . ( a ) Eshelby’s model for interconnected pores in NiTi matrix, which is converted to equivalent inclusion problem ( b ) In this model, we will simulate the stress-strain curve of a porous SMA with open porosity where...

... 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...

... m 2 /s 1.6 × 10 − 6 Volumetric expansion coefficient  (solid skeleton, α s ) /°C 18.0 × 10 − 6 Volumetric expansion coefficient  (fluid, α s ) /°C 3.0 × 10 − 4 Porosity (ϕ) ⋯ 0.14 Wellbore fluid...

... 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...

.... These far-field stresses are assumed to be equal 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...

... 1999 14 Sept 1999 31 10 2002 modelling porous materials porosity elastoplasticity mechanical stability flow through porous media Nonlinear pervious solids which have connected pores saturated with an interstitial fluid (i.e., two-phase materials), can become mechanically...

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

... 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. Gassmann , F. , 1951 , “ Uber die...

... to the former, more monumental and elaborate area of Koiter’s contributions. This one is related to, and inspired by, the latter area of his work. mechanical stability buckling elastoplasticity plasticity porosity kinematics inhomogeneous media 28 February 2001 Contributed...