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大跨越输电塔线的断线振动及控制 被引量:9
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作者 夏正春 梁政平 +1 位作者 李黎 尹鹏 《武汉理工大学学报》 EI CAS CSCD 北大核心 2008年第9期84-88,共5页
借助有限元软件ANSYS/LS-DYNA,建立塔-线耦合模型,采用显式动力分析技术,探讨塔-线体系对断线响应的仿真方法。同时,在塔头安装铅芯橡胶阻尼器,研究该阻尼器对体系断线相应的振动控制效果。通过汉江大跨越算例,验证了断线仿真方法的实... 借助有限元软件ANSYS/LS-DYNA,建立塔-线耦合模型,采用显式动力分析技术,探讨塔-线体系对断线响应的仿真方法。同时,在塔头安装铅芯橡胶阻尼器,研究该阻尼器对体系断线相应的振动控制效果。通过汉江大跨越算例,验证了断线仿真方法的实用性和铅芯橡胶阻尼器对输电塔在线路断线作用下振动控制的有效性。 展开更多
关键词 塔线耦合 断线 动力冲击作用 振动控制 铅芯橡胶阻尼器
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Localization and shock waves in curved manifolds
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作者 Claudio Conti 《Science Bulletin》 SCIE EI CAS CSCD 2016年第7期570-575,共6页
The investigation of the interplay between geometry and nonlinearity may open the road to the control of extreme waves. We study three-dimensional localization and dispersive shocks in a bent cigar shaped potential by... The investigation of the interplay between geometry and nonlinearity may open the road to the control of extreme waves. We study three-dimensional localization and dispersive shocks in a bent cigar shaped potential by the nonlinear Schro¨ dinger equation. At high bending and high nonlinearity, topological trapping is frustrated by the generation of curved wave-breaking. Four-dimensional parallel simulations confirm the theoretical model. This work may contribute to novel devices based on geometrically constrained highly nonlinear dynamics and tests and analogs of fundamental physical theories in curved space. 展开更多
关键词 Nonlinear waves Shock wavesNonlinear optics CURVATURE BOSE-EINSTEINCONDENSATION
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