Dynamic-Instability Mechanism of Double-Layer Spherical Shell under Harmonic Loading
Based on dynamic instability theory, by incremental dynamic analysis method, large-scale parameters-analysis is carried on double-layer Kiewitt shell under harmonic loading，with weight effects and double non-linear effect calculated and Failure-amplitude is determined. Further exploring on the relationship between excitation frequency changes and failure-amplitude and between initial imperfection effect and load reduction are also conducted.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
G. F. Li et al., "Dynamic-Instability Mechanism of Double-Layer Spherical Shell under Harmonic Loading", Advanced Materials Research, Vols. 197-198, pp. 736-740, 2011