Response Analysis and Optimal Design of Condensate Piping Systems in Ice-region Ships under Combined Loading Conditions

doi:10.3901/JME.260530

Abstract

Abstract: To address the problem of stress concentration and structural failure in condensate piping systems of ships operating in ice-covered regions under the combined effects of static and dynamic loads, this study proposes a structural optimization and vibration mitigation strategy based on multi-condition response analysis. A dynamic model is established that incorporates impact excitation, heaving disturbances, and their coupled effects. Through static load identification, dynamic loading simulation, and support optimization, the evolution patterns and response mechanisms of stress under extreme operating conditions are investigated. The results reveal the regulatory role of support configuration and flexible release mechanisms in mitigating high-stress zones. Additionally, the influences of excitation frequency, amplitude, and loading mode on structural stability are clarified. Findings indicate that geometric discontinuities such as tees and elbows are the primary sites of stress concentration; alternating loads tend to induce multimodal coupling and nonlinear amplification; removing rigid guides and introducing flexible routing significantly reduce peak stress levels; and deploying stiffness-tuned dampers at pump inlets effectively suppresses harmonic displacement. These outcomes provide essential theoretical support and practical guidance for the structural optimization and safety design of piping systems in ice-region vessels.

Key words: piping systems of ice-region ships, impact excitation and heaving disturbances, response to combined loading conditions, support optimization, harmonic displacement vibration mitigation

CLC Number:

U674

HAN Xu, FENG Xianhua, ZHU Hongbo, ZHANG Hao, XIE Zhongliang. Response Analysis and Optimal Design of Condensate Piping Systems in Ice-region Ships under Combined Loading Conditions[J]. Journal of Mechanical Engineering, 2026, 62(15): 171-182.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.260530

http://www.cjmenet.com.cn/EN/Y2026/V62/I15/171

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