Abstract：Abstract: The counter-intuitive behaviors of pin-ended thin spherical shell may happen under outward radial impulse loadings, while the buckling behaviors of it may happen under inward radial impulse loadings. By a large scale of numerical analyses, this paper finds the two types of dynamic responses have many identical features besides they have their own regular characteristics. The results show that the buckling behaviors occur when the impulse loads reach critical values under the inward radial impulse loading; the counter-intuitive behaviors occur when the impulse loads reach critical value ranges under outward radial loading; the abrupt changes exist in both displacement vs. time curves of the counter-intuitive behaviors and the dynamic buckling behaviors; the anomalous final deformed shapes is in the inverse direction of loadings, while the dynamic buckling final deformed shapes in the direction of loadings; Both the counter-intuitive behaviors and the dynamic buckling behaviors are all sensitive to the micro changes of the loadings; the inner force resulting in the counter-intuitive behaviors and the dynamic buckling behaviors is mainly the membrane force; the occurrence mechanism of the counter-intuitive behaviors is similar to that of the dynamic buckling.
2010, Vol. 29 
