The wind-induced responses of tall buildings are stochastic processes, and the peak factor is an important parameter to evaluate extreme value response in wind-resistant design. existing research on mainly focuses wind pressure building surface, but rarely concerns structures. In view this, super-high-rise was studied this paper. Firstly, a series tunnel tests multi-degree-of-freedom aero-elast...

Vortex-induced vibrations (VIVs) are a serious problem in suspension bridges and other long-span during their service periods. It can cause excessive amplitudes of the structure under low wind speeds, not only affecting driving comfort safety but also increasing risk fatigue failure. Previous research on identification evaluation bridge VIV events periods was based offline batch processing anal...

We develop a fast multi-fidelity modeling method for very complex correlations between high- and low-fidelity data by working in modal space to extract the proper correlation function. apply this infer amplitude of motion flexible marine riser cross-flow, subject vortex-induced vibrations (VIV). VIV are driven an absolute instability flow, which imposes frequency (Strouhal) law that requires ma...

Vortex-induced vibration (VIV) can be inevitably encountered in deep ocean mining. As the internal flow is transported axially flexible riser, complicated VIV dynamics occurs undergoing both and external flows. Therefore, object here to explore effect of with different velocities densities on response under various uniform current. In this study, a semi-empirical time domain prediction method f...

Vortex-induced vibrations (VIVs) of a flexible cylinder subjected to multi-directional flows have been studied based on wake oscillator model. The flow comprises two slabs in different directions, with each slab having uniform uni-directional profile. dynamics the is described linear Euler–Bernoulli beam theory, and model uniformly distributed along hydrodynamic force acting it. coupled system ...

Ammonia (NH3) is a promising energy resource owing to its high hydrogen density. However, widespread application restricted by the lack of efficient and corrosion-resistant storage materials. Here, we report NH3 adsorption in series robust metal–organic framework (MOF) materials, MFM-300(M) (M = Fe, V, Cr, In). VIII, Cr) show fully reversible capacity for >20 cycles, reaching capacities 16.1, 1...

This paper presents a piezoelectric energy harvester using an eccentric cylinder undergoing bending–torsion vibration in low-speed water. It can harvest energy from water using vortex-induced vibration (VIV). A distributed parameter beam model with respect to the motion of the piezoelectric beam was established based on Euler–Bernoulli beam theory. The governing coupled equations of the harvest...

This paper addresses a practical problem: “Under which coverage of buoyancy modules, would the Vortex Induced Vibration (VIV) excitation on buoyant segments dominate the response?” This paper explores the excitation competition between bare and buoyant segments of a 38 meter long model riser. The source of data is a recent model test, conducted by SHELL Exploration and Production at the MARINTE...