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针对水下拖曳与系泊系统中常见的缆索触底问题,建立了符合海底真实物理特性的弹塑性数值模型,并结合水下缆索动态运动分析中常用的集中质量方法,研究了缆索与海底接触时的运动响应。仿真分析了各类海洋工程应用中缆索-海底交互作用对缆索姿态、张力等的影响,结果表明:在弹性阻尼力与摩擦力作用下,缆索与海底的交互作用时刻变化并呈现出明显的非线性特征,海底对触底部分缆索的动力学响应影响显著并使其呈现较为复杂的运动状态。
Aiming at the common problem of bottoming of cables in underwater towing and mooring system, an elasto-plastic numerical model is established which is in accordance with the real physical characteristics of the seafloor. Combined with the mass concentration method commonly used in the dynamic analysis of underwater cables, When the motion response. The influence of the cable-seafloor interaction on the cable attitude and tension in various offshore engineering applications is simulated and analyzed. The results show that the interaction between the cable and the seafloor changes momentarily and shows obvious non-linearity under the action of elastic damping force and frictional force Linear characteristics, the bottom of the sea bottom of the dynamic response of the cable significant impact and make it show a more complex state of motion.