Hydroelastic analysis of ice shelves under long wave excitation
Hydroelastic analysis of ice shelves under long wave excitation
复制标题
长波激励下冰架的水弹性分析
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
K. Belibassakis
中科院分区：
文献类型：
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作者：
T. Papathanasiou;A. Karperaki;E. Theotokoglou;K. Belibassakis
抽象的。本文用有限单元法分析了冰架在长波激励下的瞬态水弹性响应。简单的模型，在这项工作中，被用于模拟所产生的运动学和应力场的冰架，当后者与海啸波相互作用。冰架，是大的长度相比，其厚度，被建模为弹性欧拉-伯努利梁，约束在接地线。水动力场由线性化的浅水方程表示。数值解是基于一个特殊的水弹性有限元方程的控制系统的发展。受2011年苏兹贝格冰架（SIS）崩解事件及其与本州海啸的相关性的启发，研究了SIS稳定构型。在空间和时间的弯矩分布的极值进行了检查。最后，这些极值的位置进行了研究，为不同的冰架厚度和海啸波长的值。
Abstract. The transient hydroelastic response of an ice shelf under long wave excitation is analysed by means of the finite element method. The simple model, presented in this work, is used for the simulation of the generated kinematic and stress fields in an ice shelf, when the latter interacts with a tsunami wave. The ice shelf, being of large length compared to its thickness, is modelled as an elastic Euler-Bernoulli beam, constrained at the grounding line. The hydrodynamic field is represented by the linearised shallow water equations. The numerical solution is based on the development of a special hydroelastic finite element for the system of governing of equations. Motivated by the 2011 Sulzberger Ice Shelf (SIS) calving event and its correlation with the Honshu Tsunami, the SIS stable configuration is studied. The extreme values of the bending moment distribution in both space and time are examined. Finally, the location of these extrema is investigated for different values of ice shelf thickness and tsunami wave length.