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, the authors present an experimental study of the flexural defections of concrete beam reinforced with basalt FRP bars and propose a modified equation to calculate the deflection of the FRP-RC beams.
Abstract: This paper presents an experimental study of the flexural defections of concrete beam reinforced with basalt FRP bars. Six concrete beams with different BFRP reinforcement ratio and one comparative beam reinforced with steel rebar are tested in laboratory. Numerical simulations using sectional analysis method and spatial FEM are performed. The experimental results can fit well with numerical simulation results. Analysis and experimental results in the literature collected indicate that the ACI-440.1R-06 equations underestimate the deflection of FRP-RC beams. Based on the experimental and numerical simulation results, a modified equation of the flexural rigidity is proposed to calculate the deflection of the FRP-RC beams. The proposed equation can fit better with the experimental results than the ACI-440.1R-06 equations.
43 citations
TL;DR: In this paper, a double-corrugated-plate shear wall (DCPSW) is proposed to resist lateral shear loads resulting from horizontal seismic or wind effects.
Abstract: In this paper, a double-corrugated-plate shear wall (DCPSW) is proposed. It consists of two trapezoidally corrugated plates connected with high-strength bolts. It could be utilized in high-rise buildings as an alternative of the ordinary corrugated plate shear wall (CPSW) to resist lateral shear loads resulting from horizontal seismic or wind effects. In this paper, the elastic buckling behavior of DCPSWs subjected to pure in-plane shear loads is of major concern and is firstly investigated. The DCPSWs are equivalent into orthotropic plates, and accordingly, the rigidity constants, including flexural rigidity constants in the orthotropic directions ( D x and D y ) and the torsional rigidity constant ( H ), are defined and theoretically derived. By comparing the theoretical formulas of the rigidity constants with the results obtained from finite element (FE) eigenvalue buckling analyses, these theoretical formulas are validated to be accurate enough for practical engineering applications. Then, the shear elastic buckling formulas of the DCPSWs are provided by means of FE analyses and numerical fitting technique, and these formulas are validated to be able to conservatively predict the shear elastic buckling loads of DCPSWs with good accuracy. Finally, the shear-resistant behavior of the DCPSWs is investigated via a parametric study of FE models subjected to monotonic shear loads. It is concluded that the normalized aspect ratio could be regarded as a comprehensive design parameter which reflects the ultimate shear resistance of the DCPSW.
43 citations
TL;DR: In this article, the bending and torsional rigidities of acrylic fibres have been measured in relation to tensile measurements, and, for fibres with approximately round cross-sections, the tensile modulus usually falls between the dynamic and static bending moduli.
Abstract: Bending rigidities by static and dynamic methods, and torsional rigidities by a simple dynamic method, have been measured for a series of fibres. Bending rigidities are discussed in relation to tensile measurements, and, for fibres with approximately round cross-sections, the tensile modulus usually falls between the dynamic and static bending moduli. The acrylic fibres have high bending and torsional rigidities and the regenerated proteins are characterised by low bending rigidities. Bending rigidity of viscose varies as the 1·96th power of the denier and torsional rigidity as the 1·9th power.
43 citations
TL;DR: In this paper, a series of bending tests on CFST trusses and a hybrid CFST-Hulled tubular brace truss were performed to compare the flexural stiffness and flexural strength.
43 citations
TL;DR: A detailed, biophysical model is presented that accurately predicts the biophysical properties and behavior of microtubules directed by E-fields, which opens new avenues for the design of biomolecular nanotransport systems.
43 citations