نتایج جستجو برای: bending tools

تعداد نتایج: 293978  

Journal: :جنگل و فرآورده های چوب 0
حسین رنگ آور دانشگاه شهید رجایی منوچهر عباسی هنرآموز هنرستان فنی

this study was aimed to investigate the bending moment and stress (inner and outer corners) in lshaped biscuit joint made of solid wood, particleboard and medium density fiberboard (mdf). for this purpose, l-shaped joints made of beech and fir, particleboard and mdf by biscuit size numbers of 0 (47×15×3.8 mm), 10 (53×19×3.8mm) and 20 (60×23×3.8mm). bending moment and stress carrying capacity of...

Journal: :BioMedical Engineering OnLine 2003
Reiner Hente Jacques Cordey Stephan M Perren

BACKGROUND Measurement of the bending stiffness a healing fracture represents a valid variable in the assessment of fracture healing. However, currently available methods typically have high measurement errors, even for mild pin loosening. Furthermore, these methods cannot provide actual values of bending stiffness, which precludes comparisons among individual fractures. Thus, even today, littl...

2013
S. Huang Y. J. Liu

A fast multipole boundary element method (BEM) for solving large-scale thin plate bending problems is presented in this paper. The method is based on the Kirchhoff thin plate bending theory and the biharmonic equation governing the deflection of the plate. First, the direct boundary integral equations and the conventional BEM for thin plate bending problems are reviewed. Second, the complex not...

Journal: :The Journal of experimental biology 1999
J D Currey

The bending strength of a wide variety of bony types is shown to be nearly linearly proportional to Young's modulus of elasticity/100. A somewhat closer and more satisfactory fit is obtained if account is taken of the variation of yield strain with Young's modulus. This finding strongly suggests that bending strength is determined by the yield strain. The yield stress in tension, which might be...

Journal: :Structure 2005
Remo Rohs Heinz Sklenar Zippora Shakked

DNA bending is an important structural feature for indirect readout in protein-DNA recognition. The binding of papillomavirus E2 transcription factors to their DNA binding sites is associated with DNA bending, providing an attractive model system to study the origins of sequence-specific DNA bending. The consensus E2 target is of the general form ACCGN(4)CGGT with a variable four base pair regi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی مکانیک 1385

این طرح ارائه گر مدلی برای پیش بینی مقدار خمش تیغ فرز انگشتی در فرآیند فرز کاری است. در این طرح ابتدا با شبیه سازی فرآیند، فرز کاری با تیغ فرز انگشتی (ابزار) توسط نرم افزار abaqus، مقادیر نیرو و خمش حاصل از آن در ابزار بدست آورده شده، سپس این مقادیر با مقادیر حاصل از فرمولهای تئوری و نتایج حاصل از آزمایشات تجربی مقایسه شده است. در این طرح بعد از رسیدن به توانمندی شبیه سازی فرآیند، با استفاده ...

Journal: :Accident; analysis and prevention 2012
Fuhao Mo Pierre Jean Arnoux Jean Jaques Jure Catherine Masson

Lower limbs are normally the first contacted body region during car-pedestrian accidents, and easily suffer serious injuries. The previous tibia bending tolerances for pedestrian safety were mainly developed from three-point bending tests on tibia mid-shaft. The tibia tolerances of other locations are still not investigated enough. In addition, tibia loading condition under the car-pedestrian i...

Journal: :Systems & Control Letters 2010
Nikolaos Bekiaris-Liberis Miroslav Krstic

The problem of compensation of infinite-dimensional actuator or sensor dynamics of more complex type than pure delay was solved recently using the backstepping method for PDEs. In this paper we construct an explicit feedback law for a multi-input LTI system which compensates the wave PDE dynamics in its input and stabilizes the overall system. Our design is based on a novel infinite-dimensional...

2011
Juan A. López Enrique Sedano Luis Esteban Gabriel Caffarena Angel Fernández-Herrero Carlos Carreras

Juan A. López1, Enrique Sedano1, Luis Esteban2, Gabriel Caffarena3, Angel Fernández-Herrero1 and Carlos Carreras1 1Departamento de Ingeniería Electrónica, Universidad Politécnica de Madrid, 2Laboratorio Nacional de Fusión, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), 3Departamento de Ingeniería de Sistemas de Información y de Telecomunicación, Universidad CEU-...

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