小水线面船单点搁浅损伤特性分析

小水线面船吃水较深，极易与海底擦碰而搁浅，从而带来搁浅强度问题。小水线面船搁浅时，潜体和连接桥结构受载的严酷程度以单点搁浅最为严重且单点搁浅模式（即单点搁浅模式）发生的概率最大。基于非线性有限元理论，应用商用大型有限元软件建立小水线面的整船搁浅有限元模型，研究小水线面船分别触礁石和泥沙底以单点搁浅模式搁浅时的搁浅特性。通过仿真分析，获得小水线面船搁浅的时序损伤特性、搁浅载荷及小水线面船各部分结构在搁浅载荷作用下的强度性能。本文对SWATH的搁浅特性进行了初步的研究，所得结论对小水线面船结构设计和小水线面船搁浅强度的评估具有一定的参考价值。

Research of grounding characteristics of SWATH

As the SWATH have deep sea gauge, it can be easily scraped by seabed so as to run aground, It will bring grounding strength out. In all of possible grounding modes of the SWATH, The load applied to the submarine and the crosstructure is most dangerous in single-point grounding, and single-point grounding is most easily to happen. On the base of the nonlinear finite element theory, using the large-scale commercial finite element codes, the finite element models of the whole SWATH grounding are built, grounding characteristics of the SWATH which contact with reef or sands in the mode of single-point grounding respectively is studied. The history of damage characteristics, the grounding load and the strength capability of each part bearing grounding load are obtained. This paper is the pilot study on grounding characteristics of SWATH, the results have certain reference importance in the structure design and grounding strength assessment of SWATH.