Results 261 to 270 of about 6,236 (302)

Flexural Rigidity of Reinforced Concrete Members

ACI Structural Journal, 1989
A practical method for calculating the flexural rigidity of reinforced concrete members under short-time loading is proposed. This method has been developed and refined to achieve both simplicity in use and a representation of actual behavior that is as realistic as possible.
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FLEXURAL RIGIDITY OF THIN AUXETIC PLATES

International Journal of Applied Mechanics, 2014
The influence of auxeticity on the mechanical behavior of isotropic plates is considered herein by evaluating the plate flexural rigidity as the Poisson's ratio changes from 0.5 to -1. Since the change in plate's Poisson's ratio is followed by a change in at least one of the three moduli, any resulting change to the plate flexural rigidity is only ...
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Temperature dependence of the flexural rigidity of single microtubules

Biochemical and Biophysical Research Communications, 2008
Although the flexural rigidity of a microtubule has previously been estimated by various methods, its temperature dependence has never been systematically examined. Here, we measured the flexural rigidity of a single taxol-stabilized microtubule from thermal fluctuation of the free end of a microtubule, the other end of which was fixed, at different ...
Kenji, Kawaguchi, Shin'ichi, Ishiwata, Toshihide, Yamashita   +2 more
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Effect of Rigid Gas Permeable Lens Flexure on Vision

Optometry and Vision Science, 1992
The flexure of spherical rigid lenses (various materials) and a soft lens was measured using automated over-keratometry on 6 adapted rigid lens wearers (12 eyes) whose corneal toricity ranged from 1.37 to 3.87 D. The results showed: (1) that there was no significant difference in flexure between polymethyl methacrylate (PMMA), silicone acrylate, and ...
L, Sorbara, D, Fonn, K, MacNeill
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Buckling of Columns of Variable Flexural Rigidity

Journal of Engineering Mechanics, 1992
The stability of columns with continuous flexural rigidity monotonically changing along the length of the beam is considered. A new analytical solution for the buckling load is developed in terms of Airy functions for pin-ended columns. Buckling loads for different modes and upper bounds are given when the flexural rigidity at any cross section ...
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The flexural rigidity of reinforced concrete

Magazine of Concrete Research, 1962
Summary By assuming that for short tests the stress at a-particular point in a reinforced concrete beam may be identified with a particular strain, a general non-linear theory of bending is proposed. The case of parabolic stress distribution in a rectangular beam is examined in detail and expressions describing the moment-curvature relations for ...
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Flexural Rigidity Characteristics Of Light-Weighted Mirrors

SPIE Proceedings, 1987
One of the key parameters usually considered in a light weighted mirror design is its flexural rigidity. In part I of this paper, the relative merits of symmetric sandwich and open back light-weighted designs in the 10 to 30 kg/m2 range (of mirror weight per unit area) are examined for ULE, Heraeus fused silica, Zerodur and beryllium, subject to some ...
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Flexural rigidity of circular reinforced concrete sections

ACI Structural Journal, 1990
In this paper, the ACI Building Code (ACI 318-83) expression for estimating the stiffness parameter are examined for cirucilar reinforced concrete sections. Results show that ACI Building EQ (I10-10) consistently overestimates the stiffness parameter.
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39—THE FLEXURAL RIGIDITY OF THIN FABRICS

The Journal of The Textile Institute, 1974
A simplified version of the Owen–Grosberg flexural-rigidity tester, of improved sensitivity, is described, and the theory of the instrument is presented.
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The flexural rigidity of reinforced concrete slabs

Computers & Structures, 1985
Abstract To allow reliability analyses and design optimisation, two probabilistic models for the flexural rigidity of effectively uncracked reinforced concrete slabs are developed theoretically from a probabilistic model of concrete compliance. A simulation model uses finite difference equations to model concrete and steel stresses and strains, as ...
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