نتایج جستجو برای: orthotropic layer
تعداد نتایج: 284802 فیلتر نتایج به سال:
this study presents exact bending solution of fully clamped orthotropic rectangular plates subjected to arbitrary loads resting on elastic foundations, based on the finite integral transform method. in this method, it is not necessary to determine the deformation function because the basic governing equations of the classical plate theory for orthotropic plates have been used. a detailed parame...
An original formulation for the elastic analysis of multilayered shells is presented in this work. The key features are: representation shell mean surface via a generic system curvilinear coordinates; unified treatment general theories an Equivalent-Single-Layer approach based on through-the-thickness expansion covariant components displacement field; and Interior Penalty discontinuous Galerkin...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
In this paper, the effect of the temperature change on the vibration frequency of mono-layer graphene sheet embedded in an elastic medium is studied. Using the nonlocal elasticity theory, the governing equations are derived for single-layered graphene sheets. Using Levy and Navier solutions, analytical frequency equations for single-layered graphene sheets are obtained. Using Levy solution, the...
This paper presents an exact analytical solution for two-dimensional conductive heat transfer in spherical composite pressure vessels .The vessels are in spherical shape and fibers are winded in circumferential direction. The analytical solution is obtained under the general boundary conditions which consist of convection, conduction and radiation inside/outside of vessel. The heat transfer equ...
in this work, an inverse finite element formulation was modified for considering material anisotropy in obtaining blank shape and forming severity of deep drawn orthotropic parts. in this procedure, geometry of final part and thickness of initial blank sheet were known. after applying ideal forming formulations between material points of initial blank and final shape, an equation system was obt...
The behavior of surface horizontally polarized shear waves (SH waves) in the composite multi-material structure with a periodic irregular and interface is investigated analytically present study. To unravel enshrouded features SH-wave propagation multi-layer structure, we consider model three distinct materials. In schematic problem, guiding layer (M-I) contains fluid-saturated porous materials...
Abstract In many countries, the bridge infrastructure suffers from damaged bridges that need to be rehabilitated or replaced. This means state institutions responsible for this must make extensive investments. Are there other ways address problems caused by damaging effects of de-icing agents, fatigue due high vehicle loads and frequencies on load side lack strength of, example, orthotropic dec...
The short-headed stud connectors play a critical role on the interaction of orthotropic steel deck (OSD) and ultra-high performance concrete (UHPC) layer in steel-UHPC composite bridge deck. In this paper, fatigue behavior these was experimentally investigated beam test. failure modes were identified classified into 5 types. test results analyzed by linear regression analysis neglecting run-out...
In thermoelastic stress analysis (TSA) of orthotropic laminated polymer composites, heat transfer influences the measured induced temperature change, or ‘thermoelastic response’. The composite constituents, including different fibre types, geometry, ply thickness and resin systems, in combination with manufacturing process means that, even for nominally identical materials, conditions are gener...
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