An enhanced computational approach is formulated to assess the service performance of active phased array antenna (APAA). For this approach, the discretized system equation of the thermo-mechanical coupling analysis is firstly constructed by the node-based gradient smoothing technique. Then, the stabilization terms are introduced to further improve the computational accuracy and stability, which are related to the temperature and strain gradient of APAA. Finally, the thermo-mechanical-electromagnetic (TME) coupling model is established by quantitatively analyzing the relationship between electromagnetic performance and thermal deformation of APAA. The accuracy, efficiency, convergence speed and mesh distortion insensitivity of the developed approach are deeply studied and its effectiveness in addressing the multi-physics coupling analysis of APAA is fully demonstrated through comparisons with traditional methods.

中文翻译：

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有源相控阵天线多物理场耦合分析的增强计算方法


制定了一种增强的计算方法来评估有源相控阵天线（APAA）的服务性能。对于这种方法，首先通过基于节点的梯度平滑技术构建热力耦合分析的离散系统方程。然后，引入与APAA的温度和应变梯度相关的稳定项以进一步提高计算精度和稳定性。最后，通过定量分析APAA的电磁性能与热变形之间的关系，建立了热-机械-电磁（TME）耦合模型。对所开发方法的精度、效率、收敛速度和网格畸变不敏感度进行了深入研究，并通过与传统方法的比较，充分证明了其在解决APAA多物理场耦合分析方面的有效性。