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Design method of hybrid active tuned mass damper based on controllable stroke

A technology of tuned mass damping and hybrid active, which is applied to building components, earthquake resistance, etc., and can solve the problems that the structure does not meet the use function and safety

Active Publication Date: 2017-07-25
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high uncertainty of seismic load, the nonlinearity of materials and the variation of performance during use, as well as the limitations of existing structural analysis and design methods make it possible that the structure does not meet the requirements of function and safety.

Method used

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  • Design method of hybrid active tuned mass damper based on controllable stroke
  • Design method of hybrid active tuned mass damper based on controllable stroke
  • Design method of hybrid active tuned mass damper based on controllable stroke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] like figure 1 As shown, the hybrid active tuned mass damper design method based on controllable stroke includes the following steps:

[0065] 1) Establish the mechanical model of the structure-CS-HATMD system: from the mass m of the structure itself s , damping c s and stiffness k s , to establish the mechanical model of the structure-based hybrid active tuned mass damper (ie structure-CS-HATMD) system with controllable stroke;

[0066] 2) Establish structure-CS-HATMD system dynamic equation: According to the principle of structural dynamics, analyze the force of the structure and the first active tuned mass damper (ATMD1) and the second active tuned mass damper (ATMD2), and establish Structure—CS-HATMD system equation;

[0067] 3) Optimize the vibration control parameters of the structure-CS-HATMD system;

[0068] 4) Design CS-HATMD: By comparing the structures, consider the effectiveness of the control and the effectiveness of the stroke control of the damping sy...

Embodiment 2

[0069] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0070] like figure 2 As shown, the mechanical model of the structure-CS-HATMD system is established in the step 1): the structure is regarded as a single-degree-of-freedom particle, and its damping c is determined according to its material characteristics s and stiffness k s , install an ATMD1 on the structure, with an active force u T (t) control, then install an ATMD2 on ATMD1, with an active force u t (t) control, add a damper c between ATMD2 and the structure L The linear additional damper; thus constitute the structure-CS-HATMD system.

[0071] Described step 2) set up the dynamical equation of structure-CS-HATMD system: carry out force analysis to structure, ATMD1, ATMD2 respectively, according to structural dynamics theory, list its system equation as:

[0072]

[0073]

[0074]

[0075] In the formula, is the earthquake ground motion a...

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Abstract

The invention discloses a method for designing hybrid active tuned mass dampers with controlled stroke. The method includes operation steps of 1), building mechanical models of structure-CS (controlled stroke)-HATMD (hybrid active tuned mass dampers) systems; 2), creating kinetic equations of the structure-CS-HATMD systems; 3), optimally computing the CS-HATMD by the aid of genetic algorithms; 4), comparing parameters and designing the novel hybrid active tuned mass dampers by the aid of selected optimal combination parameters. The method has the advantages that the novel hybrid active tuned mass dampers are applicable to all structures, the effectiveness of the CS-HATMD is nearly identical to the effectiveness of HATMD, but the stroke of the CS-HATMD is obviously shorter than the stroke of the HATMD.

Description

technical field [0001] The invention relates to a controllable stroke-based hybrid active tuned mass damper (Hybrid activetuned mass damper with controlled stroke, CS-HATMD) vibration design method. Background technique [0002] As a natural disaster that seriously threatens the safety of human life and property, earthquake has caused huge disasters to human beings. It is one of the many earthquake-prone countries, such as the Wenchuan earthquake, Japan earthquake, and Ya'an earthquake that occurred in recent years. These major earthquakes not only caused great economic losses, but also brought great grief and serious psychological damage to people. In the 21st century, with the rapid development of the world economy, people have put forward higher and higher requirements for the safety and disaster prevention of engineering structures, requiring engineering structures not to be damaged when natural disasters (such as strong earthquakes and typhoons) occur damage, and requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98
Inventor 李春祥曹黎媛迟恩楠
Owner SHANGHAI UNIV
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