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Bin Wang, Shan Gao, Yan Qu, Haoyang Yin and Zhenju Chuang
This paper addresses a detailed analysis of the ice?structure interaction process of the phase-locked ice crushing (PLC) against offshore structures. Directly measured ice load, structure response data, and in situ observation from the field measurements...
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Guojun Wang, Qianjin Yue, Dayong Zhang, Yanghua Fu, Xin Peng and Rui Dong
When sea ice acts on vertical structures, there are much higher pressures in localized areas known as high-pressure zones (HPZs) than in other areas. The damage failure mode of sea ice varies with the sea ice velocity and affects the distribution of HPZs...
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Bin Jia, Qing Wang, Lei Ju, Chenjun Hu, Rongsheng Zhao, Duanfeng Han and Fuzhen Pang
The vertical ice breaking of marine structures in ice-covered areas involves the deformation and failure of an ice sheet. Different from the existing conventional scenarios where the ice sheet is used as a transportation and support medium, the damage to...
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Yingzhou Liu, Xin Li and Youwei Zhang
With the development of large-scale offshore projects, sea ice is a potential threat to the safety of offshore structures. The main forms of damage to bottom-fixed offshore structures under sea ice are crushing failure and bending failure. Referred to as...
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Tingting Wang, Pingfeng Li, Chun?an Tang, Bingbing Zhang, Jiang Yu and Tao Geng
Frozen fractured rock mass is often encountered during the implementation of geotechnical engineering in cold regions. The tensile strength parameters of frozen rock play an important role in the construction of rock slopes involving tensile failure. In ...
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Xue Long, Lu Liu, Shewen Liu and Shunying Ji
In cold regions, ice pressure poses a serious threat to the safe operation of ship hulls and fixed offshore platforms. In this study, a discrete element method (DEM) with bonded particles was adapted to simulate the generation and distribution of local i...
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Li Zhou, Feng Wang, Feng Diao, Shifeng Ding, Hao Yu and Yang Zhou
The existence of ice in ice-covered waters may cause damage to the propeller of polar ships, especially when massive ice floes are submerged around the hull. This paper aims to simulate an interaction process of a direct ice collision with a propeller ba...
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Songsong Yu, Dayong Zhang and Qianjin Yue
The jacket platform in the Bohai Sea oilfield is an important engineering development, offering design alternatives in this economically important region. However, ice-induced vibration in cold areas threatens the safety and operation of these platforms....
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Ningbo Zhang, Xing Zheng and Qingwei Ma
In this paper, an updated Smoothed Particle Hydrodynamics (SPH) method based on the Simplified Finite Difference Interpolation scheme (SPH_SFDI) is presented to simulate the failure process of ice. The Drucker?Prager model is embedded into the SPH code t...
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Ningbo Zhang, Xing Zheng and Qingwei Ma
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Xue Long, Lu Liu and Shunying Ji
Self-excited vibrations of offshore structures interacting with sea ice, characterized by low frequency and high amplitudes, pose significant hazards to offshore wind turbines (OWTs) in cold seas. This study employs the discrete element method (DEM) with...
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Hyonjeong Noh, Kwangu Kang and Jin-Yeong Park
Autonomous underwater vehicles have long been used in marine explorations, and their application in recent polar expeditions is particularly noteworthy. However, the complexity and extreme conditions of the polar environment pose risks to the stable oper...
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Meng Zhang, Karl Garme, Magnus Burman and Li Zhou
A simplified numerical model is introduced to predict ice impact force acting on the ship hull in level ice condition. The model is based on ice-hull collision mechanisms and the essential ice breaking characteristics. The two critical ice failure modes,...
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Ming Song, Wei Shi, Zhengru Ren and Li Zhou
In this paper, the interaction between level ice and wind turbine tower is simulated by the explicit nonlinear code LS-DYNA. The isotropic elasto-plastic material model is used for the level ice, in which ice crushing failure is considered. The effects o...
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Yanghui Li, Yongchen Song, Weiguo Liu and Feng Yu
The mechanical properties of methane hydrate are important to the stability of borehole and methane extraction from a methane hydrate reservoir. In this study, a series of triaxial compression tests were carried out on laboratory-formed methane hydrate-i...
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Syed Nasir Danial, Doug Smith and Brian Veitch
Traditional techniques for accident investigation have hindsight biases. Specifically, they isolate the process of the accident event and trace backward from the event to determine the factors leading to the accident. Nonetheless, the importance of the c...
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David Gagnon, Jean-Denis Brassard, Hassan Ezzaidi and Christophe Volat
Deicing and anti-icing the aircraft using proper chemical fluids, prior takeoff, are mandatory. A thin layer of ice or snow can compromise the safety, causing lift loss and drag increase. Commercialized deicing and anti-icing fluids all pass a qualificat...
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Bao-Yu Ni, Zi-Wang Chen, Kai Zhong, Xin-Ang Li and Yan-Zhuo Xue
In most previous ice?ship interaction studies involving fluid effects, ice was taken as unbreakable. Building breakable level ice on water domain is still a big challenge in numerical simulation. This paper overcomes this difficulty and presents a numeri...
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Alessandro Zambon, Lorenzo Moro, Jeffrey Brown, Allison Kennedy and Dan Oldford
Polar navigation entails challenges that affect the continuation of ship operations in severe ice conditions. Due to ice-propeller interaction, propulsion shafting segments are often at a high risk of failure. Efficient methods for shaft line design are ...
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Liuqun Dong, Jiming Cao and Xian Liu
With the rapid development of urbanization around the world, the sea-level-rise problem is gaining more and more attention in the 21st century. Sea-level rise is the result of a combination of climate-related factors, structural factors and human activit...
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