It is proved that the extensible beam equation in Ball's model admits periodic solutions near equilibrium states if subject to external periodic force of high frequency. The approach is based on translation along trajectories, averaging method and homotopy invariants such as topological degree and fixed point index.
机构:
Dipartimento di Matematica, Università degli Studi di Parma, Viale Parco Area delle Scienze 53/A,43124 Parma, ItalySchool of Mathematical Sciences, Xiamen University
Luca LORENZI
Gregory I.SIVASHINSKY
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机构:
School of Mathematical Sciences, Tel Aviv UniversitySchool of Mathematical Sciences, Xiamen University
机构:
Zhejiang Sci Tech Univ, Fac Sci, Hangzhou 310018, Zhejiang, Peoples R China
Nanjing Normal Univ, Sch Math Sci, Nanjing 210046, Jiangsu, Peoples R ChinaZhejiang Sci Tech Univ, Fac Sci, Hangzhou 310018, Zhejiang, Peoples R China