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Singular function model analysis method for inherent frequency of string pulling combined structure

A technology of combined structures and singular functions, which is applied in the field of model analysis and architectural structure model analysis, can solve the problems of inapplicable vibration analysis of complex string structures and cumbersome calculation process, etc.

Pending Publication Date: 2022-04-15
SHENZHEN UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, when dealing with strings with a lot of concentrated mass, the transfer matrix method needs to iteratively process the strings multiple times, the calculation process is very cumbersome, and it is not suitable for vibration analysis of complex string structures

Method used

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  • Singular function model analysis method for inherent frequency of string pulling combined structure
  • Singular function model analysis method for inherent frequency of string pulling combined structure
  • Singular function model analysis method for inherent frequency of string pulling combined structure

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Embodiment Construction

[0077] combined with Figure 1-8 The embodiments of the present invention will be described in detail.

[0078] First of all, it should be noted that the anal fistula drainage injection irrigation tube shown in the accompanying drawings is intended to describe the present invention concisely, clearly, and clearly, so the accompanying drawings cannot be used as limitations on the present invention.

[0079] In the description of the present invention, unless otherwise specified, words indicating orientation or positional relationship such as "upper", "lower", "middle", "both ends", "upper end", "lower end", and "inner" are only In order to describe the present invention more conveniently, it should not be construed as a limitation of the present invention.

[0080] Model derivation

[0081] The singular function model analysis method of the natural frequency of the stay-string combined structure of the present embodiment comprises the steps:

[0082] Step 1: Simplify the com...

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Abstract

The invention relates to a singular function model analysis method for inherent frequency of a string pulling composite structure, and belongs to the technical field of building structure model analysis. Comprising the following steps: simplifying a concentrated mass string pulling combination structure; the concentrated mass is converted into distributed mass in the cable length direction through a Dirac function; solving a function of the vibration mode of the inhaul cable relative to the time t and the position x; laplace transformation is carried out on a vibration equation of transverse free vibration in a tensioning chord plane; performing inverse Laplacian transformation on the result of the step 4; and solving to obtain a vibration mode equation of the concentrated mass pull string structure model, and obtaining a singular function model, thereby obtaining the frequency of each order of the concentrated mass pull cable combined structure. The singular function model can well predict the influence of the concentrated quality on the inherent frequency of the pull string composite structure.

Description

technical field [0001] The invention relates to a model analysis method, in particular to a singular function model analysis method of the natural frequency of a tensioned composite structure, belonging to the technical field of architectural structure model analysis. Background technique [0002] As a typical string structure, it consists of a metal string and a bow frame, which are hinged together at the junction; the bow frame tensions the wire string, and the tension force is changed by adjusting the curvature of the bow frame. If the small-sized magnet sheet is absorbed on the metal wire string of the stay string structure, then form the stay string composite structure with concentrated mass. [0003] Stayed string structures are associated with many practical engineering systems, such as stressed reinforcement in prestressed concrete, stayed string arches, and especially the stay cables of suspension bridges. As a structural form that exists in reality, some mass damp...

Claims

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Application Information

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IPC IPC(8): G06F30/20
Inventor 李大望刘德有周英武李龙元王东炜
Owner SHENZHEN UNIV
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