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Analysis of Stability on Elastic Plates with Initial Imperfections
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作者 徐凯宇 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1995年第10期951-959,共9页
On the basis of Marguerre equations,the influence on a bifurcation diagram of am elatic plate affected by initial deflection imperfection and transverse loading is studied with the help of the singularity theory .Thes... On the basis of Marguerre equations,the influence on a bifurcation diagram of am elatic plate affected by initial deflection imperfection and transverse loading is studied with the help of the singularity theory .Thes paper applies universal unfoldingprinciples,it is put forward that the unstable analysis of thes problem can transform into the study of a triple algebraic equation in the neighborhood of a simple eigenvalue .Thus the bifurcated states are decided,and the bifurcation diagrams are drawn up following distinct paramentrs. Then the quantitative series of interfering with eigenvalues are discussed. 展开更多
关键词 imperfection. universal unfolding. eigenvalue. bifurcation
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ANALYSIS OF STABILITY ON ELASTIC PLATES WITH INITIAL IMPERFECTIONS
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作者 徐凯宇 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 1995年第5期951-959,共9页
On the basis of Marguerre equations ,the influence on a bifurcation diagram of an elastic plate affected by initial deflection imperfection and transverse loading is studiedwith the help of the singularity theory This... On the basis of Marguerre equations ,the influence on a bifurcation diagram of an elastic plate affected by initial deflection imperfection and transverse loading is studiedwith the help of the singularity theory This paper applies universal unfolding principles,it is put forward that the unstable analysis of this problem can transforminto the study of a triple algebraic equation in the neighborhood of a simple eigenvalue .Thus the bifurcated stated are decided,and the bifurcation diagrams aredrawn up following distinct parameters.Then the quantitative seriesof interfering witheigenvalues are discussed. 展开更多
关键词 imperfection. universal unfolding. eigenvalue bifurcation
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具有初始缺陷弹性板的稳定性分析
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作者 徐凯宇 《应用数学和力学》 CSCD 北大核心 1995年第10期887-894,共8页
本文以Marguerre方程为基础,用奇异性理论研究了初始挠度缺陷以及横向载荷对弹性板屈曲后分叉解的影响。借助于普适开折的原理,在单特征值局部邻域内将该问题的失稳分析转化为三次代数方程的讨论,从而确定出分叉解的性态。... 本文以Marguerre方程为基础,用奇异性理论研究了初始挠度缺陷以及横向载荷对弹性板屈曲后分叉解的影响。借助于普适开折的原理,在单特征值局部邻域内将该问题的失稳分析转化为三次代数方程的讨论,从而确定出分叉解的性态。同时绘出了在不同参数下的分叉解文,讨论了几何缺陷和横向载荷对特征值的影响。 展开更多
关键词 缺陷 特征值 弹性板 稳定性 挠度
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