Structural Dynamics Analysis of Endebius Florensis’ Hindwing

Focusing on the dynamic characteristics of the hindwing structure of Endebius Florensis, a finite element model was established and analyzed to determine its modal characteristics, including natural frequencies and mode shapes. This analysis further explored the harmonic response and random vibration characteristics, examining the response of the hindwing structure under stable and random vibration loading. Finally, a transient dynamics analysis was carried out to investigate the response characteristics under time-varying loads. The first two modes had the highest effective mass ratio, and the predominant mode was up-down bending deformation. Under a fixed load of 0.03 N, the harmonic response produced total displacements and equivalent stress values of 50.6 mm and 1.5 GPa, and 24.52 mm and 0.61 GPa, respectively. The second bending cycle was similar to the previous one, but with a larger maximum displacement deformation. Under load, the displacement changed 1.74 mm compared to the initial position.