This study proposes a new tension member with buckling-free function using carbon fiber reinforced polymer for the seismic bracing system. Firstly, concept of composite brace; partially fibred brace, is introduced. Secondly, material strength brace molded by modified pultrusion investigated. Finally, cyclic loading tests to simulate are conducted. As result, it was demonstrated that system can ...

In this paper, a set of partial differential equations considering the dynamic effects coiled tubing (CT) is established based on bending theory slender beams axial loads. The analytical solution sinusoidal deformation with time term obtained. critical load during buckling and change half-wave number post-buckling are studied through introduction necessary conditions, separation constant. conta...

Buckle-initiation techniques, such as sleepers, are usually installed to trigger lateral buckling at pre-designated locations release the axial compressive forces induced by thermal loading. Taking nonlinear pipe–soil interaction model into account, a mathematical is proposed investigate of subsea pipelines triggered sleeper. The numerical solution validated comparing with solutions in literatu...

New experimental results show that laser bending can be extended to generate a bending angle not only towards but also away from the laser beam, giving more flexibility to the process. In order to explain this buckling instability, a series of experiments have been carried out with real-time measurement of the bending angle for different materials, thicknesses, scanning speeds, laser beam diame...

An analytic, small-deflection, simplified model of the modern violin bow is introduced to describe the bending profiles and related strengths of an initially straight, uniform cross-section, stick as a function of bow hair tension. A number of illustrative bending profiles (cambers) of the bow are considered, which demonstrate the strong dependence of the flexibility of the bow on longitudinal ...

INTRODUCTION Ureteral access sheaths (UAS) facilitate flexible ureteroscopy in the treatment of urolithiasis. The physical properties of UAS vary by manufacturer and model. We compared three new UAS: Glideway (GW, Terumo, 11/13Fr, 12/14Fr), Pathway (PW, Terumo 12/14F) and Navigator HD (NHD, Boston Scientific, 11/13Fr, 12/14Fr) in the domains of safety characteristics, positioning characteristic...

Motivated by the buckling of glassy crusts formed on evaporating droplets of polymer and colloid solutions, we numerically model the deformation and buckling of spherical elastic caps controlled by varying the volume between the shell and the substrate. This volume constraint mimics the incompressibility of the unevaporated solvent. Discontinuous buckling is found to occur for sufficiently thin...

This paper (SPE 173892) was revised for publication from paper OTC 25335, first presented at the Offshore Technology Conference, Houston, 5–8 May 2014. Original manuscript received for review 20 June 2014. Revised manuscript received for review 27 October 2014. Paper peer approved 4 November 2014. Summary Steel catenary risers (SCRs) on a large-heave-motion vessel are susceptible to compression...

Submitted for the MAR14 Meeting of The American Physical Society Instability and Wave Propagation in Structured 3D Composites NARGES KAYNIA, NICHOLAS X. FANG, MARY C. BOYCE, Massachusetts Inst of Tech MIT — Many structured composites found in nature possess undulating and wrinkled interfacial layers that regulate mechanical, chemical, acoustic, adhesive, thermal, electrical and optical function...

Cross-bracing (X-bracing) is one of the most popular methods of seismic retrofitting, and has been shown to significantly increase the structural stiffness and strength of buildings. Conventional steel X-bracing methods typically exhibit brittle failure at the connection between the brace and the building, or buckling failure of the braces. This study investigated the structural properties of a...