نتایج جستجو برای: non linear vibrating beams
تعداد نتایج: 1734320 فیلتر نتایج به سال:
Background: The purpose of this paper is to establish an easy and reliable biodosimeter protocol to evaluate the biological effects of proton beams. Materials and Methods: Human peripheral blood lymphocytes were irradiated using proton beams (LET: 34.6 keV μm−1), and the chromosome aberrations induced were analyzed using cytokinesis-blocked (CB) micronucleus (MN) assay. To determine th...
We investigate numerically and experimentally the spatial collapse dynamics and polarization stability of radially and azimuthally polarized vortex beams in pure Kerr medium. These beams are unstable to azimuthal modulation instabilities and break up into distinct collapsing filaments. The polarization of the filaments is primarily linear with weak circular components at the filaments' boundari...
In many engineering applications it is often necessary to determine the flow of shear stresses in cross-sections beamlike bodies. Taking a cue from Jourawski's well-known formula, several scholars have proposed expressions for evaluating non-prismatic linear elastic beams, where longitudinal variations size and shape produces complex stress fields. present paper, new derived using mechanical mo...
The present paper is concerned with the determination of frequency equation and sensitivity eigenfrequencies a fixed-free longitudinally vibrating rod transversally beam carrying tip mass by using several methods. First, exact equations such systems are established, then approximate formulas given for fundamental methods which contain equivalent system, Rayleigh quotient, Dunkerley’s formula co...
In this work, we are interested in tree-shaped networks of freely vibrating beams which geometrically exact (GEB) – the sense that large motions (deflections, rotations) accounted for addition to shearing and linked by rigid joints. For intrinsic GEB formulation, namely terms velocities internal forces/moments, derive transmission conditions show network is locally ...
This document contains a first assessment of spatial transmission schemes regarding performance and complexity. In order to assess advanced beamforming and MIMO technologies, mathematical models, as well as methodologies for simulation and assessment have been developed. Conceptual work and simulation campaigns have been conducted. A baseline WINNER multi-antenna concept is proposed for further...
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