Research on the influencing factors of nonlinear dynamics in membrane antenna structures

Space membrane structures are distinguished by their low surface density, reduced rigidity, and lightweight nature. Yet, they face numerous dynamic challenges in orbital functioning, highlighting the prominent vibration issue in these membrane antenna designs. This study conducts a numerical simulation of thin-film antenna architecture using Abaqus to examine how film thickness, prestress, and various elements influence the structure's dynamic behavior. Findings indicate that film thickness primarily influences the mass matrix, while prestress impacts the stiffness matrix. Improving the matrices for mass and stiffness reduces the displacement of the mid-point, leading to a more consistent and efficient dynamic reaction of the structure in handling vibrations. The research in this paper provides an important reference for vibration control and performance optimization of thin-film antenna structures.