A satellite layout-structure integrated optimization method based on thermal metamaterials

In the conceptual design phase of the satellite thermal management system, components layout optimization and structural topology optimization of satellite panel can meet global and local thermal management requirements, respectively. However, achieving non-interfering coupling between these two optimization processes remains a challenge. An integrated layout-structure design method based on thermal metamaterials is proposed, which comprises two design stages. In the first stage, components layout optimization is conducted to maximize temperature uniformity within the satellite module, yielding a globally optimized layout with balanced thermal characteristics. In the second stage, topology optimization guided by the design principle of thermal metamaterials is implemented in critical local panel regions to satisfy differentiated heat transfer requirements of components with diverse functional and thermal sensitivity properties. The key innovation lies in utilizing thermal metamaterials as a mediator to synergistically couple global components layout optimization with local structural topology optimization, which enables customized local heat flux manipulation without interfering with the globally optimized temperature field derived from the layout optimization. The method introduces neither additional mass nor special materials, offering advantages of low cost, high reliability, and strong versatility. It provides a new solution paradigm for the design of passive thermal management systems in satellites.