为确保船舶与海洋结构安全运行，本研究提出基于应力监测与模态叠加的疲劳评估方法。通过布设少量传感器获取结构应力响应，结合基础模态线性叠加反演全域应力时程，进而实现目标区域疲劳损伤评估。结果表明，该方法在保持可靠性的同时显著降低计算资源需求，并可无缝嵌入现有监测系统进行长期疲劳评估。研究验证了该技术的可行性与可靠性，并指出进一步提升精度的优化方向，为船舶智能化运维提供了兼具安全性和经济性的解决方案。
To ensure the safe operation of ships and offshore structures, this study proposes a fatigue assessment method based on stress monitoring and modal superposition. By deploying a limited number of sensors to acquire structural stress responses, the global stress time history is reconstructed via linear superposition of fundamental modal responses, enabling fatigue damage evaluation in target areas. Results demonstrate that this approach significantly reduces computational resource requirements while maintaining reliability and can be seamlessly integrated into existing monitoring systems for long-term fatigue assessment. The research validates the technical feasibility and reliability of this methodology, while identifying optimization directions for enhanced accuracy through modal parameter refinement. This solution provides a safety-conscious and cost-effective approach for intelligent ship operation and maintenance systems.
2025,47(19): 42-47 收稿日期：2025-1-9
DOI：10.3404/j.issn.1672-7649.2025.19.007
分类号：U663
基金项目：水路交通控制全国重点实验室开放课题基金项目
作者简介：张超群(1990-),男,硕士,助理研究员,研究方向为船舶结构实船监测
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