Topic
Flexural rigidity
About: Flexural rigidity is a research topic. Over the lifetime, 3829 publications have been published within this topic receiving 56780 citations.
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TL;DR: In this article, a static method for the axial load identification of prismatic structural elements, with known geometric and elastic properties, was presented, which can be idealized as simply supported beams constrained by two end rotational springs.
29 citations
TL;DR: An actively cooled vascular polymer matrix composite containing 3.0% channel volume fraction retained greater than 90% flexural stiffness when exposed continuously to 325 °C environmental temperature as mentioned in this paper. But, this composite suffered complete structural failure through thermal degradation under the same conditions.
Abstract: An actively cooled vascular polymer matrix composite containing 3.0% channel volume fraction retains greater than 90% flexural stiffness when exposed continuously to 325 °C environmental temperature. Non-cooled controls suffered complete structural failure through thermal degradation under the same conditions. Glass–epoxy composites ( T g = 152 °C) manufactured by vacuum assisted resin transfer molding contain microchannel networks of two different architectures optimized for thermal and mechanical performance. Microchannels are fabricated by vaporization of poly(lactide) fibers treated with tin(II) oxalate catalyst that are incorporated into the fiber preform prior to resin infiltration. Flexural modulus, material temperature, and heat removal rates are measured during four-point bending testing as a function of environmental temperature and coolant flow rate. Simulations validate experimental measurements and provide insight into the thermal behavior. Vascular specimens with only 1.5% channel volume fraction centered at the neutral bending axis also retained over 80% flexural stiffness at 325 °C environmental temperature.
29 citations
TL;DR: The smaller, low-profile plates may be sufficient for metacarpal fixation, although patient compliance and the use of supplemental stabilization with a cast or splint should be considered.
Abstract: Smaller, lower-profile plates for metacarpal fixation may have the potential to reduce extensor tendon irritation and adhesions, but their sufficiency for stabilizing metacarpal fractures has not been studied. We investigated the relative stiffness and strength of low-profile and conventional plating systems. For apex dorsal bending (bending closed), no plates broke or had notable plastic deformation. The conventional plates exhibited higher overall bending rigidity than all other plates, but had a lower maximum bending moment than the smaller plates. In apex volar bending (bending open) and torsion, the conventional plates were remarkably more rigid and developed remarkably higher torque. In vivo metacarpal loads are primarily apex dorsal bending, and all plates performed well in this mode. Thus, the smaller, low-profile plates may be sufficient for metacarpal fixation, although patient compliance and the use of supplemental stabilization with a cast or splint should be considered.
29 citations
TL;DR: In this paper, a parametric survey was conducted on the performance of a T-junction of concrete plates of various thickness, density, bending rigidity and loss factor, and it was shown that an increase in loss factor can lead to a detrimental increase in mode coupling between travelling bending waves and in-plane waves at all angles of incidence.
29 citations
TL;DR: In this paper, a comparative experimental analysis of the flexural behavior of lightweight concrete and self-compacting concrete filled square steel tube beams subjected to pure bending was presented, and the results indicated improvements in flexural strength, stiffness, and ductility.
29 citations