Dynamic Characteristics of Thin Film Structure with Concentrated Mass

Abstract

Abstract Aiming at the design and analysis of flexible film building rigid flexible large complex structure system, this paper carried out the simulation analysis of dynamic characteristics of thin film structure with concentrated mass. The structural connectors with high stiffness and relatively concentrated mass are simplified as concentrated mass. The flexible thin film structure is simplified as a biaxially tensioned cross film material sample. The influences of pretension, quality, and concentrated mass of the size on the natural frequency of cross film material samples are analyzed. The results show that the natural frequency of the sample increases with pretension, decreases with the quality of the concentrated mass, and increases with the side length of the connection between the concentrated mass and the sample. The fundamental frequency of the sample is independent of the height of the concentrated mass, but the second frequency decreases with the height of the concentrated mass. The research results provide a theoretical basis for the overall design and analysis of building film structure and the further dynamic experiments of film material samples with concentrated mass.