نتایج جستجو برای: walled cylinder
تعداد نتایج: 35443 فیلتر نتایج به سال:
Graphene is a one-atom thick planar monolayer of sp-bonded carbon atoms organized in a hexagonal crystal lattice. A single walled carbon nanotube (SWCNT) can be thought of as a graphene sheet rolled up into a seamless hollow cylinder with extremely high length to diameter ratio. Their large surface area, and exceptional optical, mechanical and electronic properties make these low-dimensional ca...
Abstract. A hyperelastic constitutive law, for use in anatomically accurate finite element models of living structures, is suggested for the passive and the active mechanical properties of incompressible biological tissues. This law considers the passive and active states as a same hyperelastic continuum medium, and uses an activation function in order to describe the whole contraction phase. T...
This work presents how approximate solution methods were introduced in a graduate level course of Theory of Elasticity. The three methods introduced are the finite difference method, the finite element method, and the boundary element method. All methods are exemplified by the problem of a thick-walled cylinder subject to internal pressure with an axisymmetric response. Choosing a single proble...
Developing clinical work suggests that vascular stiffening plays a role in the progression of pulmonary hypertension (PH), while recent studies in animal models of hypoxic PH have found significant proximal vascular stiffening in the diseased population. Here, we develop and validate a minimally invasive, clinically realizable method to estimate the local elastic modulus of the proximal pulmona...
Based on the phenomenological Ginzburg-Landau approach, we investigate phase solitonic states in a class of three-component superconductors for mesoscopic doubly-connected geometry (thin-walled cylinder) external magnetic fields. Analysis Gibbs free energy system shows that superconductor are thermodynamically metastable and separated from ground state by sizable energy. Our results demonstrate...
The article deals with modeling and calculations of volumetric machine-building structures complex geometry. relevance the work lies in fact that its methodology results can help design massive structural elements shape, including cylinders powerful hydraulic presses. Attention is paid to problems reducing metal content products safe conditions their operation. Theoretical applied based on nume...
The design of thin-walled cylinders in axial compression is limited by sensitivity to geometric imperfections. This paper focuses on reducing this imperfection from a perspective. By using variable-angle composites, the load paths are tailored reduce effective area over which imperfections can initiate buckling. Continuous Tow Shearing (CTS) one such manufacturing technique. It does not cause d...
Thin-walled parts with curved surface are widely used in industrial applications and the high-quality machining is still a major problem because of low stiffness. By using machining-path obtained from design model thin-walled surface, accuracy requirement may easily not be met due to springback clamping deformation when process finished. It novel idea that mapping free-state clamped-state reali...
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