In past three years,we deduced the nonlinear harmonic calculator for each order through the simplified platform-ice dynamic interaction research,thus obtained the infinite-ordelr normal form. And the application of high-order normal form theory simplifled the high-dimension nonlinear dynamic system;simultaneously we did a research on the local bifurcation and the global behavior of the high-dimension nonlinear dynamic system,especlal1y the internall resonance system with the freedom greater than three,through the singularity theory.Based on the above work,we calculated the dynamic response of some large-scale flexible structures like bridges and pipelines under nonlinear wind-induced and vortex-induced vibration; furthermore we did the reliability analysis of fatigue stability.At last we did some active control research of the dynamic bifurcation on some large-scale flexible structures through the numerical and model tests
为适应海上边际油田开发的需要,本项目以简易平台为对象,研究冰激、地震等非线性动力荷载作用下的结构响应:平台结构的内共振、组合共振机理及其控制方法。它将推进我国高维大型柔性结构系统非线性动力学的研究;为简易平台的可靠性设计方法及其安全性评估方法提供理论依据
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数据更新时间:2023-05-31
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