光滑颗粒流体力学在冰荷载数值模拟中的应用前景

А.R. Filatov
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引用次数: 0

摘要

研究对象和目的。研究对象是海洋工程结构。目的是评估光滑颗粒流体力学(SPH)在冰荷载数值模拟中的应用前景。材料和方法。为此,综述了断裂力学中常用的数值求解方法(有限元法、扩展有限元法、离散元法、光滑粒子流体力学、光滑粒子伽辽金法)及其优缺点。给出了主要的SPH关系。主要的结果。采用柱腿与水平冰原相互作用的试验问题,得到了在有破冰布置和没有破冰布置以及整体冰荷载作用下冰变形破坏的定性模式。结论。分析结果表明,滑动最小二乘法公式中的SPH对于细粒冰塑性损伤的数值模拟和海洋结构相应荷载的定义是有希望的。
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Outlook for application of smooth particle hydrodynamics for numerical modeling of ice loads
Object and purpose of research. The object of research is marine engineering structures. The purpose is to assess the outlook for application of smooth particle hydrodynamics (SPH) for numerical modeling of ice loads. Materials and methods. For this purpose an overview of the most popular methods for numerical solution of problems in fracture mechanics is given with their merits and drawbacks (finite element method, extended finite element method, discrete element method, smooth particle hydrodynamics, smoothed particle Galerkin). Main SPH relations are presented. Main results. A test problem of a cylinder leg interacting with level ice field is used to obtain a qualitative pattern of ice deformation and failure with and without ice breaking arrangements, as well as under the global ice load. Conclusion. Analysis of obtained results shows that SPH in the sliding least square method formulation is promising for numerical modeling of plastic damage in fine grained ice and definition of corresponding loads on marine structures.
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