Duffing系统解的转迁集的解析表达式

ANALYTICAL EXPRESSION OF TRANSITION BOUNDARIES OF THE SOLUTION OF DUFFING SYSTEMS

通过对非线性Ｄｕｆｉｎｇ方程解的稳定性进行研究，得到了其周期一解失稳的转迁集的解析表达式，同时应用广义牛顿法，得到了Ｄｕｆｉｎｇ方程对称破缺分岔转迁集的解析表达式，与Ｕｅｄａ用模拟计算机的方法和Ａ．Ｙ．Ｔ．Ｌｅｕｎｇ用增量谐波平衡数值方法的结果吻合良好，克服了用模拟计算机或数字计算机确定物理参数平面上的转迁集计算工作量十分大的困难．

The nonlinear Duffing equation is studied and fold boundaries of period T are obtained by introducing Burton's and Cheung's results and nonlinear frequency. Also, the transition boundaries of symmetric breaking are obtained by general Newton's method. Our results are in good agreement with Leung's by IHB method,and we overcome the difficulty of great quantities of computation by computer.