نتایج جستجو برای: Polygonal cutout

تعداد نتایج: 6826  

H Abdolalian M Jafari, M. H Bayati Chaleshtari

This paper investigates the moments and stress resultants from infinite FG laminates with different polygonal cutouts subject to uniaxial tensile load. The analytical solution used for the calculation of stress resultants and moments is the basis of the complex-variable method and conformal mapping function. The impact of various factors, namely cutout orientation angle, cutout aspect ratio as ...

Abdolhossein Fereidoon Amin Akbarpour Kamal Kolasangiani Mahmoud Shariati

In this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. First, the numerical results were validated by the results of experimental test performed by an INSTRON 8802 servo hydraulic machine. Also, the effect of cutout angle (θ), cutout size, cutout position (L0/L) and cutout aspect ratios (b/a...

Journal: :Journal of orthopaedic trauma 2004
Mark B Sommers Christoph Roth H Hall Benjamin C C Kam Larry W Ehmke James C Krieg Steven M Madey Michael Bottlang

OBJECTIVES To establish a laboratory model of implant cutout, which can evaluate the effect of implant design on cutout resistance in a clinically realistic "worst case" scenario. SETTING Orthopaedic biomechanics laboratory. DESIGN Implant cutout was simulated in an unstable pertrochanteric fracture model, which accounted for dynamic loading, osteoporotic bone, and a defined implant offset....

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2013
abdolhossein fereidoon kamal kolasangiani amin akbarpour mahmoud shariati

in this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. first, the numerical results were validated by the results of experimental test performed by an instron 8802 servo hydraulic machine. also, the effect of cutout angle (θ), cutout size, cutout position (l0/l) and cutout aspect ratios (b/a...

2012
A. Lakshminarayana R. Vijaya Kumar G. Krishna Mohana Rao

In this paper the effects of circular and elliptical cutout on the buckling behavior of a sixteen ply quasi-isotropic graphite/epoxy symmetrically laminated rectangular composite plate [0°/+45°/45°/90°]2s, subjected to various linearly varying in-plane compressive loads, numerically. Further, this paper addresses the effects of size of elliptical cutout, orientation of elliptical cutout, plate ...

Mahmoud Shariati Masoud Mehdizadeh Rokhi

Understanding how a cutout influences the load bearing capacity and buckling behavior of cylindrical shells is fundamental in the design of structural components used in automobiles, aircrafts, and marine structures. In this article, simulation and analysis of steel cylindrical shells with various lengths, include quasi elliptical cutout, subjected to axial compression were systematically carri...

Journal: :Medical physics 2015
Hassaan A Alkhatib Wondesen T Gebreamlak David J Tedeschi Dimitris Mihailidis Ben W Wright William J Neglia Philip T Sobash Jonas D Fontenot

PURPOSE To calculate the output factor (OPF) of any irregularly shaped electron beam at extended SSD. METHODS Circular cutouts were prepared from 2.0 cm diameter to the maximum possible size for 15 × 15 applicator cone. In addition, two irregular cutouts were prepared. For each cutout, percentage depth dose (PDD) at the standard SSD and doses at different SSD values were measured using 6, 9, ...

2015
NASHAAT A. DEIAB SHAYMAA Z. ABDEL KADER MOHAMED EL-NAGDY Nashaat A. Deiab

Purpose: This study was to investigate the effect of irregularity in shape of field size of electron beam on the percentage depth dose and the output factor. Study the variety of the Percentage Depth Dose (PDD) and the output factors for rectangular and small field sizes when one of field dimensions less than the Practical Range (Rp) of the electron energy used. Compare the measured output fact...

2016
Huayong Xu Yangyan Li Wenzheng Chen Dani Lischinski Daniel Cohen-Or Baoquan Chen

Object cutout is a fundamental operation for image editing and manipulation, yet it is extremely challenging to automate it in real-world images, which typically contain considerable background clutter. In contrast to existing cutout methods, which are based mainly on low-level image analysis, we propose a more holistic approach, which considers the entire shape of the object of interest by lev...

Journal: :CoRR 2016
Junyan Wang Sai-Kit Yeung Jue Wang Kun Zhou

Recent works on interactive video object cutout mainly focus on designing dynamic foreground-background (FB) classifiers for segmentation propagation. However, the research on optimally removing errors from the FB classification is sparse, and the errors often accumulate rapidly, causing significant errors in the propagated frames. In this work, we take the initial steps to addressing this prob...

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