The collaborative design of maritime structures involves not only multiple disciplines, but also uncertainty of information. Collaborative optimisation (CO) is a powerful multidisciplinary design and optimisation strategy known for its two-layer structure. In the original mathematical formulation of system-level optimisation, the second-level compatibility constraints are utilised. However, this makes a system-level CO algorithm have additional non-linear characteristics. Furthermore, during design optimisation considering uncertainty, the introduction of uncertainty quantisation increases complexity. Overall, the approach can reduce accuracy and efficiency. To solve these problems, a decoupling strategy called sequential optimisation and reliability assessment is proposed in this paper together with a collaborative uncertainty design and optimisation model. Three examples are provided to show how this hierarchical strategy can be applied to modern distributed maritime engineering design processes.

中文翻译：

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使用顺序优化和可靠性评估的协同海事设计

海事结构的协同设计不仅涉及多个学科，还涉及信息的不确定性。协作优化（CO）是一种强大的多学科设计和优化策略，以其两层结构而闻名。在系统级优化的原始数学公式中，使用了二级兼容性约束。但是，这使系统级CO算法具有其他非线性特征。此外，在考虑不确定性的设计优化过程中，不确定性量化的引入增加了复杂性。总体而言，该方法会降低准确性和效率。为了解决这些问题，本文提出了一种称为顺序优化和可靠性评估的解耦策略，以及协同不确定性设计和优化模型。提供了三个示例，以说明如何将该分层策略应用于现代分布式海事工程设计过程。