机构地区: 天津大学
出 处: 《应用力学学报》 1993年第2期75-79,共5页
摘 要: 本文应用Normal Form理论和退化向量场的普适开折理论研究了参数激励与强迫激励联合作用下非线性振动系统的余维2退化分叉,用Melnikov方法讨论了全局分叉的存在性. In this paper, we use normal form theory and universal unfolding theory of the degenerate vector field to study degenerate bifurcations of codimension two in nonlinear oscillator under combined parametric and forcing excitation. The existence of global bifurcation is discussed by using Melnikov's method.