Seung-Deog Kim - Professor, Semyung University, Jecheon ۳۹۰-۷۱۱, Korea

The characteristic of indirect snapping of shell-like structures is numerically investigated by FEM,considering geometrical nonlinearity. Analytic models are chosen from arches and EP shells which areapplied by up-and-down Step excitations. The dynamic buckling loads are compared with the staticcritical loads, and the mechanism is examined by using phase curves and running spectra of nonlineardisplacement responses

Sability, Snapping, Bifurcation, Arch, Shell