Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
One-dimensional periodic cushion vibration reduction ballast bed vibration isolation frequency band regulation and control design method
The invention discloses a one-dimensional periodic cushion vibration reduction ballast bed energy band structure simplified calculation and vibration isolation frequency band design method. The methodstarts from a wave equation of continuous state parameters under assumed conditions of a one-dimensional infinite periodic structure and infinite extension of a ballast bed along a line direction, obtains a transfer matrix of a single period in combination with a section continuous condition, obtains an analytical solution of an energy band structure curve by introducing a periodic boundary condition, determines a vibration isolation frequency band according to a forbidden band distribution range, and obtains the change rule of the forbidden band and the vibration isolation frequency band along with geometry and material parameters through influence factor analysis, so that active regulation and control of the forbidden band and the vibration isolation frequency band are achieved. According to the invention, the one-dimensional periodic cushion vibration reduction ballast bed energy band structure calculation and vibration isolation frequency band design method has the beneficial effects that a theoretical basis is provided for design and engineering practice of a periodic vibration reduction ballast bed; and the method is small in calculation amount, clear in theoretical basis and convenient to use, the calculation result can completely meet the requirements of engineering design, and the method has wide applicability.
本发明公开了一种一维周期垫层减振道床能带结构简化计算与隔振频段设计方法，该方法在一维无限周期结构以及道床沿线路方向无限延申的假定条件下，从连续状态参数的波动方程入手，结合截面连续条件得出单个周期的传递矩阵，通过引入周期边界条件即可得到能带结构曲线的解析解，根据禁带分布范围可以确定隔振频段。通过影响因素分析可以获得禁带与隔振频段随几何和材料参数变化规律，实现禁带和隔振频段的主动调控。本发明的有益效果是提供一种一维周期垫层减振道床能带结构计算与隔振频段设计方法，为周期减振道床的设计和工程实践提供理论依据。该方法计算量小，理论依据明确，使用方便，计算结果完全能满足工程设计的要求，具有广泛适用性。
One-dimensional periodic cushion vibration reduction ballast bed vibration isolation frequency band regulation and control design method
The invention discloses a one-dimensional periodic cushion vibration reduction ballast bed energy band structure simplified calculation and vibration isolation frequency band design method. The methodstarts from a wave equation of continuous state parameters under assumed conditions of a one-dimensional infinite periodic structure and infinite extension of a ballast bed along a line direction, obtains a transfer matrix of a single period in combination with a section continuous condition, obtains an analytical solution of an energy band structure curve by introducing a periodic boundary condition, determines a vibration isolation frequency band according to a forbidden band distribution range, and obtains the change rule of the forbidden band and the vibration isolation frequency band along with geometry and material parameters through influence factor analysis, so that active regulation and control of the forbidden band and the vibration isolation frequency band are achieved. According to the invention, the one-dimensional periodic cushion vibration reduction ballast bed energy band structure calculation and vibration isolation frequency band design method has the beneficial effects that a theoretical basis is provided for design and engineering practice of a periodic vibration reduction ballast bed; and the method is small in calculation amount, clear in theoretical basis and convenient to use, the calculation result can completely meet the requirements of engineering design, and the method has wide applicability.
本发明公开了一种一维周期垫层减振道床能带结构简化计算与隔振频段设计方法，该方法在一维无限周期结构以及道床沿线路方向无限延申的假定条件下，从连续状态参数的波动方程入手，结合截面连续条件得出单个周期的传递矩阵，通过引入周期边界条件即可得到能带结构曲线的解析解，根据禁带分布范围可以确定隔振频段。通过影响因素分析可以获得禁带与隔振频段随几何和材料参数变化规律，实现禁带和隔振频段的主动调控。本发明的有益效果是提供一种一维周期垫层减振道床能带结构计算与隔振频段设计方法，为周期减振道床的设计和工程实践提供理论依据。该方法计算量小，理论依据明确，使用方便，计算结果完全能满足工程设计的要求，具有广泛适用性。
One-dimensional periodic cushion vibration reduction ballast bed vibration isolation frequency band regulation and control design method
一种一维周期垫层减振道床隔振频段调控设计方法
JIANG BOLONG (Autor:in) / LIU JIZHAO (Autor:in) / HU WENLIN (Autor:in) / WANG SHAOLIN (Autor:in) / HE BIN (Autor:in) / QI CHUNYU (Autor:in) / YANG BAOFENG (Autor:in) / YANG QIZHEN (Autor:in) / LIU DAOTONG (Autor:in) / TAN DAZHENG (Autor:in)
30.03.2021
Patent
Elektronische Ressource
Chinesisch
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