Immobility plus preexisting chronic disease or acute trauma can activate the coagulation system, thus increasing the risk for thromboembolic events. The effects of long-term bed-rest immobility and microgravity on the coagulation system of healthy persons (e.g., during crewed Mars missions) have not yet been studied. The main objective of the second Berlin BedRest Study (BBR2-2) "Coagulation Pa...

Polymer-matrix composites are widely used in various industries due to their high specific strength and stiffness. However, the void formation is inevitable as a by-product during manufacturing processes, which may have negative effects on its mechanical properties. The purposes of this paper quantitatively evaluate influence voids anisotropic elastic properties provide corresponding theoretica...

In this article we propose macroscopic (continuum) simulation schemes to predict response of porous heterogeneous material systems subjected to weak and moderate impact velocities. The proposed simulation model includes (1) an equation of state for porous solids that describes the evolution of porosity in the material as a function of shock pressure and, (2) a macroscopic rate dependent plastic...

Rumex vesicarius (RVE) mediated chitosan–AgNPs composite was produced in situ by using an aqueous extract of leaves as the reducing agent to reduce Ag+ Ag0. The synthesized evaluated a sweet (CO2) corrosion inhibitor (CI) for C1018 carbon steel (CS) 3.5 wt% NaCl solution under static and hydrodynamic conditions. inhibitive performance electrochemical impedance spectroscopy (EIS), linear polariz...

Using principle of minimum total potential energy approach in conjunction with Rayleigh-Ritz method, the electro-thermo-mechanical axial buckling behavior of piezoelectric polymeric cylindrical shell reinforced with double-walled boron-nitride nanotube (DWBNNT) is investigated. Coupling between electrical and mechanical fields are considered according to a representative volume element (RVE)-ba...

Using  principle  of  minimum  total  potential  energy  approach  in conjunction  with  Rayleigh-Ritz  method,  the  electro-thermo- mechanical  axial  buckling  behavior  of  piezoelectric  polymeric cylindrical  shell  reinforced  with  double-walled  boron-nitride nanotube  (DWBNNT)  is  investigated. Coupling  between  electrical and mechanical  fields  are  considered  according  to  ...

In this paper, free vibration, modal and stress state analyses of honeycomb sandwich structures with different boundary conditions was investigated major factors affecting the frequencies stiffness due to material or parameter changes were determined. The representative volume element (RVE) method used in work analytically numerically validated by comparing obtained results those available lite...

This paper describes the development of a hierarchical multiscale procedure within finite volume (FL) OpenFOAM framework for modeling mechanical response nonlinear heterogeneous solid materials. is first model mechanics using FL discretization method. In this computational procedure, information passed between macro- and microscales representative elements (RVEs), allowing general, nonperiodic ...