Abstract: The topology optimization method can find the best path of the load transmission and the best type of the load bearing on the premise of ensuring the requirements of the design specifications. The compromise programming method is a method commonly used in the topology optimization deign of the structure under multiple operating conditions. However, the designers need to perform topology optimization trial calculations under different volume fraction constraints during the topology optimization design, which often costs more time. An improved compromise programming method is then proposed to save time. The multi-operating-condition topology optimization design is carried out for the longitudinal frame of a cantilever platform in the offshore engineering structure based on the secondary development of the HyperMesh software. A clear longitudinal frame configuration is given from the perspective of structural design according to the final topology optimization configuration.

Key words: topology optimization, improved compromise programming method, multiple operating conditions, secondary development, longitudinal frame

摘要： 拓扑优化方法能够在保证设计规范要求的前提下,寻求结构传递载荷的最佳路径以及承受载荷的最佳形式。折衷规划法是结构拓扑优化设计时常用的多工况化一的方法,但在进行拓扑优化设计时,设计者需要进行不同体积分数约束下的拓扑优化试算,这往往会耗费更多的时间。为了节约时间成本,该文提出一种改进折衷规划法,基于HyperMesh软件进行了二次开发,并对海洋工程结构中某悬挑平台纵向框架进行了多工况拓扑优化设计。基于最终拓扑优化构型,从结构设计角度给出清晰的纵向框架构型。

关键词: 拓扑优化, 改进折衷规划法, 多工况, 二次开发, 纵向框架