Large storage tanks situated in coastal areas are vulnerable to environmental hazards, with earthquakes being one of the most destructive forces threatening their structural safety. Additionally, differential settlement can significantly alter conditions tank, including inclination, thereby changing direction external applied excitation and affecting liquid sloshing response. To investigate coupled effects excitation, model tests were conducted series analyze behavior a tilted tank subjected...

With the rapid development of construction industry, tower cranes are increasingly used in coastal engineering. However, due to complexity their operating environment, vulnerable typhoons, thunderstorms, and other extreme natural disasters. Therefore, it is becoming important carry out safety warnings for crane structure under action strong winds. In this paper, a real-time monitoring system responses based on Internet things (IoT), which realizes long-term whole process operation, was...

This study examines the sloshing of liquid with time-varying mass in a tank. A set innovative experiments is carried out involving shaking table supporting water tank equipped drain pipe. Physical evidence transient resonance observed for first time. Transient occurs under specific excitation conditions when instantaneous average level (AWL) approaches critical depth. During resonance, oscillatory amplitude free-surface elevation increases sharply and then decreases an envelope pattern....

Water storage tanks in cities are usually large and occasionally affected by earthquakes. A sudden earthquake can cause pressure pulses that damage water containers severely. In this study, the sloshing motion a high filling level tank caused seismic excitation is investigated numerical method 2D model. Two well-studied strong earthquakes used to analyze broadband frequency nonlinear displacement of both longitudinal vertical directions. Based on careful experimental verification, free...

Abstract Tank sloshing in a liquid cargo ship will cause instability or even overturning of its carrier if the external wave frequency is close to natural tank. The inherent damping tank without inner structures has been found be insufficient for suppressing violent motion. A variety plates have designed increase Of them, horizontal perforated plate (HPP) proved effective dissipating energy swaying through experiments. In this study, problem with an HPP under and rolling excitation...

Wave maker is one of the most important experimental equipment in marine engineering. To meet demands simulation higher wave amplitude and compare effect piston flap type generation, a new generation device was proposed with rotary-valve-control vibrator developed. A mathematical model established analysed by Simulink, series experiments were conducted on to analyze characteristics. The results show that can adjust distance paddle generate different regular waves. bigger axial opening size...

This paper focuses on the hydrodynamic interaction between large floating body and a small transfer platform in jettyless system. A high-order boundary-element method combined with direct time-domain-solution to calculate analyze response of while berthed fixed freely under wave action was applied compared single platform. It found that when were both located leeward side, they had little mutual influence, agreed well body. While side body, it significantly affected platform, resulting...

Flexible materials have made remarkable development in recent years and are widely used various fields such as flexible sensors wearable devices. Existing sensors, devices, electronics other however, still problems low precision poor mechanical properties. The emergence of graphene provides a new idea to solve these problems. composite graphene, which has excellent electrical conductivity, strength flexibility, with polymer can improve its properties without affecting the flexibility...

The growth of global energy transportation has promoted the rapid increase large-scale LNG (liquefied natural gas) carriers, and concerns around safety ships attracted significant attention. Such a floating structure is affected by external wave excitation internal liquid sloshing. interaction between structure’s motion sloshing under actions may lead to ship experiencing an unexpected accident. In this research, hydrodynamic experiment conducted investigate responses tank mooring, both...

To meet the demands of white noise waves with different and higher energy spectral density, a new wave generation method was proposed corresponding wave-making system controlled by rotary valve developed. The theoretical model established, hydraulic transmission function solved. After control parameters in were obtained, experiment tests carried out to generate waves, its density analyzed Fourier analysis. results show that amplitudes have densities. And generated is approximately constant....

The temperature plays a critical role in atmospheric research. A measurement system based on Rayleigh scattering Lidar was developed this study to detect mid and upper-level temperature. To analyze the error introduced by calibration point temperature, echo signal simulated. continuously measured structure is stable. profile follows same trend as mode, shown comparison with different modes balloons. mean difference between balloon 2.59 K, mostly concentrated below 5 K. Continuous observation...

The generation method and analysis of solitary waves are always a hotspot exploring the theory huge that generated by tsunami or windstorm their destructiveness for experiment teaching. key to analyze interaction between extreme engineering structures is simulating accurately. To lessen modifications simulation in teaching, mathematical modelling controlled electro-hydraulic proportional control system under constant pressure was proposed, motion process plate law spool valve different...