建立 ROV 作业系统垂向一维动力学模型，研究随机波浪激励下的动态响应。利用振动理论对方程无因次处理，得到阻尼比和频率比与响应关系的微分方程。采用双参数的 PM 波谱作为波浪函数，并对其无因次化。运用龙格库塔法对随机波浪和运动方程进行求解，得到缆索最大张力与各参数的关系，并分析缆索出现松弛的情况，并与谐波激励的响应作对比。结果表明，随机激励下，缆索的最大张力在频域出现多个峰值，在频率很大的范围内保持较大的张力，但峰值张力小于谐波激励的峰值。
Develop a single-degree-of-freedom model for the cable-body system to analyze the dynamic response. By making the differential equation non-dimensional, the relation between excitation and drag coefficient with the response is analyzed. Non-dimensional PM Spectrum with dual parameter is used as the excitation. The differential equation is solved by using Runge-Kutta iterative algorithm to get relation between the largest tension and parameters above. These results are compared with the response under harmonic excitation. Results show that the largest tension has multiple peak values, and maintains at a high level for a wide range, while the peak tension of cable is smaller than the response under harmonic excitation.
2016,38(8): 43-46 收稿日期：2016-1-5
DOI：10.3404/j.issn.1672-7619.2016.08.009
分类号：U661.4
基金项目：国家自然科学基金资助项目(51279107)
作者简介：黄柱林(1990-),男,硕士研究生,主要从事水下工程技术方面的研究。
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