针对调距桨轴系及轴内油管抗冲击分析中传统动态设计法（Dynamic Design Analysis Method，DDAM）精度不足、全时域法效率低的问题，提出一种DDAM-时域法耦合的计算方法。将轴内油管简化为轴系的附加质量，通过DDAM法计算基准冲击谱；构建时域冲击输入载荷，完成轴内油管精细化计算分析。以某型舰船调距桨轴系及轴内油管为对象，采用此方法对其进行抗冲击性能研究。结果表明，耦合方法计算耗时10 h，较全时域法计算时间降低67%，轴系最大综合应力响应为391.91 MPa，轴内油管最大应力响应为216.42 MPa，均低于材料许用应力值，满足抗冲击要求。为船舶推进系统抗冲击设计提供了一种“整体-分布”分层分析的高效研究方法。
Aiming at the issues of insufficient accuracy in the traditional Dynamic Design Analysis Method (DDAM) and low efficiency of full time-domain method for anti-shock analysis of controllable pitch propeller shafting and internal oil pipes, this paper proposes a coupled DDAM-time domain calculation method. The internal oil pipes are simplified as additional mass of the shafting system to calculate the benchmark shock spectrum through DDAM. Subsequently, time-domain shock input loads are constructed to perform detailed analysis of internal oil pipes. Taking a naval vessel's controllable pitch propeller shafting and its internal oil pipes as research objects, this method demonstrates: The coupled approach requires 10 hours of computation time, representing a 67% reduction compared to full time-domain method. The maximum comprehensive stress response of the shafting reaches 391.91 MPa, while the internal oil pipes show maximum stress response of 216.42 MPa, both below material allowable stress values and meeting anti-shock requirements. This study provides an efficient "integrated-distributed" layered calculation approach for shock-resistant design of marine propulsion systems.
2025,47(24): 120-125 收稿日期：2025-1-1
DOI：10.3404/j.issn.1672-7649.2025.24.018
分类号：U664.21
基金项目：国家自然科学基金重点基金项目（51839005）；高技术船舶科研专项（K24532-1-2）；中国博士后科学基金面上资助（2024M762518）
作者简介：何书浩(2001-),男,硕士研究生,研究方向为船舶动力装置性能分析及振动噪声控制。
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