耐压壳体是水下平台的关键承压结构，其可靠性直接影响装备安全性与任务成功率。针对传统可靠性分析方法难以量化含开孔、多肋布局等复杂构型耐压壳体可靠性的问题，提出一种融合有限元仿真与多约束协同建模的系统化分析方法。基于应力-强度干涉理论，构建考虑强度、稳定性及多源不确定性的串联系统可靠性模型，结合实测统计参数修正有限元仿真结果，实现复杂构型壳体的可靠性量化评估。以某AUV耐压壳体为研究对象，实例计算表明，单次任务可靠度为0.999979，全寿命周期总可靠度为0.979554，验证了方法的普适性与工程实用性。该方法可为水下装备耐压壳体的设计提供量化可靠性评估工具，具有一定的工程应用价值。
The pressure hull is a key pressure-bearing structure of underwater platforms, and its reliability directly affects equipment safety and mission success rates. Aiming at the problem that traditional reliability analysis methods are difficult to quantify the reliability of pressure hulls with complex configurations (e.g., openings and multi-rib layouts), this paper proposes a systematic analytical method integrating finite element simulation and multi-constraint collaborative modeling. Based on the stress-strength interference theory, a series system reliability model considering structural strength, stability, and multi-source uncertainties is constructed. By calibrating finite element simulation results with measured statistical parameters, quantitative reliability evaluation of complex-configuration hulls is achieved. Taking an AUV pressure hull as a case study, calculations demonstrate a single-mission reliability of 0.999979 and a total life-cycle reliability of 0.979554, verifying the universality and engineering practicality of the proposed method. This approach provides a quantitative reliability evaluation tool for the design of underwater pressure hulls, offering significant engineering application value.
2025,47(21): 20-26 收稿日期：2025-2-13
DOI：10.3404/j.issn.1672-7649.2025.21.004
分类号：U661
作者简介：冯杰熹(1998-),男,硕士,工程师,研究方向为水下机器人总体与结构设计
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