نتایج جستجو برای: tension stiffening
تعداد نتایج: 62156 فیلتر نتایج به سال:
Concrete tensile stresses influence the cracking behaviour and stiffness of reinforced concrete (RC) members. Most design codes account for this tension stiffening effect using an effective reinforcement ratio. Although ratio has a significant on RC structures, its quantification is controversial in many cases, typically relies empirical geometry-based expressions. One main reason knowledge gap...
The construction of high-rise oblique grid buildings requires a large amount concrete. To save resources, an intersecting nodes composed steel outer tubes and fiber, recycled concrete inner (OGSFRCIN) has been proposed. ABAQUS is used to study the mechanical properties under axial pressure, accounting for effects six parameters: angle, thickness stiffening ring, connecting plate, strength, aggr...
This study first provides an overview of the development a novel tube anchor system for seismic strengthening or repair reinforced concrete (RC) shear walls with carbon fibre-reinforced polymer (CFRP) sheets. The new can significantly improve load transfer mechanism between CFRP and supporting RC structural elements, resulting in ductile behaviour strengthened increases lateral capacity ductili...
Arterial stiffening is a risk factor for cardiovascular disease, but how arteries stay supple is unknown. Here, we show that apolipoprotein E (apoE) and apoE-containing high-density lipoprotein (apoE-HDL) maintain arterial elasticity by suppressing the expression of extracellular matrix genes. ApoE interrupts a mechanically driven feed-forward loop that increases the expression of collagen-I, f...
Random packings of granular chains are presented as a model system to investigate the contribution of entanglements to strain stiffening. The chain packings are sheared in uniaxial compression experiments. For short chain lengths, these packings yield when the shear stress exceeds the scale of the confining pressure, similar to granular packings of unconnected particles. In contrast, packings o...
This paper introduces a novel, bioinspired manipulator for minimally invasive surgery (MIS). The manipulator is entirely composed of soft materials, and it has been designed to provide similar motion capabilities as the octopus's arm in order to reach the surgical target while exploiting its whole length to actively interact with the biological structures. The manipulator is composed of two ide...
The marine sponge Chondrosia reniformis Nardo consists largely of a collagenous tissue, the mesohyl, which confers a cartilaginous consistency on the whole animal. This investigation was prompted by the incidental observation that, despite a paucity of potentially contractile elements in the mesohyl, intact C. reniformis stiffen noticeably when touched. By measuring the deflection under gravity...
Assessing the residual capacity of corroded reinforced concrete (RC) beams depends on quantifying corrosion cracks and rebar cross-section loss, understanding their influence structural behaviour. Relations between crack widths loss have been developed in literature, experimental studies shown a decrease flexural RC beams. However, results were only related to longitudinal loss. In real structu...
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