Topic
Flexural rigidity
About: Flexural rigidity is a research topic. Over the lifetime, 3829 publications have been published within this topic receiving 56780 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, five types of FRCM applied as flexural reinforcements are compared, and the results show that there is a correlation between the strengthening materials and the cracking patterns developed by the tested beams.
73 citations
TL;DR: In this paper, the effects of transverse shearing due to low shear modulus of microtubules are investigated using a Timoshenko-beam model, with detailed comparison between the Timoshenko beam model, classical isotropic Euler-Bernoulli beam model and a more accurate 2D orthotropic elastic shell model.
Abstract: Microtubules are characterized by extremely low shear modulus that is a few orders of magnitude lower than longitudinal modulus. In this paper, the effects of transverse shearing due to low shear modulus of microtubules are investigated using a Timoshenko-beam model, with detailed comparison between the Timoshenko-beam model, classical isotropic Euler–Bernoulli beam model and a more accurate 2D orthotropic elastic shell model. It is confirmed that transverse shearing is mainly responsible for the length-dependent flexural rigidity of an isolated microtubule reported in the literature, which cannot be explained by the widely used Euler–Bernoulli beam model. Indeed, the length-dependent flexural rigidity predicted by the Timoshenko-beam model is found to be in good quantitative agreement with known experimental data. In particular, the present Timoshenko-beam model predicts that, because of the length dependence of flexural rigidity, microtubules of different lengths could sustain almost equal maximum axial compressive force against column buckling, a conclusion that could have some interesting consequences to the mechanical behavior of cells. These results recommend that the Timoshenko-beam model offers a unified simple 1D model, which can capture the length dependence of flexural rigidity and be applied to various static and dynamic problems of microtubule mechanics.
73 citations
TL;DR: In this article, a mathematical solution for the relationship between dynamic flexural strain and differential displacement was proposed and the results showed that the relationship is dependent upon conductor tension and flexural rigidity and is linear except for high frequencies when the loop lengths are short in relation to the deflection arm.
Abstract: The results of recently reported experiments on vibrating conductors have shown a proportionality between dynamic flexural strain and differential displacement, or bending amplitude, for individual cables. A mathematical solution defining the relationship has been formulated. The analytic solution shows the relationship to be dependent upon conductor tension and flexural rigidity and is linear except for high frequencies when the loop lengths are short in relation to the deflection arm of the measuring instrument. Experimental data from three laboratories are in good agreement with the analytic solution. The nonlinearity of individual strain-displacement tests on stranded cables shows need to further investigate the flexural rigidity of multiwire construction.
73 citations
TL;DR: In this paper, the effects of bow flare on deck wetness and the asymmetry of the vertical wave bending moment were investigated in both regular and irregular waves for models with two kinds of bow flares.
Abstract: Model tests were conducted in both regular and irregular waves for models with two kinds of bow flare form. The purpose of the tests was to obtain information on the effects of bow flare on deck wetness and the asymmetry of the vertical wave bending moment. The model was made of synthetic resins so as to simulate the bending rigidity of a full scale ship. The measured results are analysed as to the intensity of impact pressure in the bow, the frequency of the deck wetness, and the asymmetry of the bending moment.
72 citations
TL;DR: The pin-force model is one of the earliest models developed for beams actuated in bending as mentioned in this paper, where the actuator and substrate are considered as separate elastic bodies and the forces from the actuators are transferred to the substrates by "pins" at the edges of actuators.
Abstract: The pin-force model is one of the earliest models developed for beams actuated in bending. In this model, the actuators and substrates are considered as separate elastic bodies and the forces from the actuators are transferred to the substrates by "pins" at the edges of the actuators. Although this model of force transfer is consistent with the assumed perfect bonding scenario, where the shear stress is concentrated in a small area close to the edge of the actuator, it fails to provide the correct structural response for the case where the actuator is relatively thick. In this paper, while retaining the basic features of this model (i.e., treating the actuator and beam as separate bodies), the corrections necessary to upgrade this model to the level of the more accurate Bernoulli-Euler model are presented. The basic difference lies in the appropriate inclusion of the actuator flexural stiffness in the structural moment-curvature equations. Two configurations are considered: one in which the actuators are ...
72 citations