Collaborative maritime design using sequential optimisation and reliability assessment

摘要

The collaborative design of maritime structures involves not only multiple disciplines, but also uncertainty ofinformation. Collaborative optimisation (CO) is a powerful multidisciplinary design and optimisation strategy knownfor its two-layer structure. In the original mathematical formulation of system-level optimisation, the second-levelcompatibility constraints are utilised. However, this makes a system-level CO algorithm have additional non-linearcharacteristics. Furthermore, during design optimisation considering uncertainty, the introduction of uncertaintyquantisation 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 togetherwith a collaborative uncertainty design and optimisation model. Three examples are provided to show how thishierarchical strategy can be applied to modern distributed maritime engineering design processes.