Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Improved generalized alpha method for nonlinear dynamic analysis of complex structure

A nonlinear dynamic, complex structure technology, applied in special data processing applications, instruments, electrical and digital data processing, etc., to achieve the effect of simple steps, avoiding the amount of calculation, and ensuring unconditional stability

Active Publication Date: 2020-02-07
李鲁
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in solution efficiency when the generalized α method is used to analyze the dynamic time history of complex structures, the present invention makes two key improvements to the nonlinear iterative process of the generalized α method, and provides a method for external dynamic loads A fast analysis method for nonlinear dynamic time-history analysis of complex structures under action

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Improved generalized alpha method for nonlinear dynamic analysis of complex structure
  • Improved generalized alpha method for nonlinear dynamic analysis of complex structure
  • Improved generalized alpha method for nonlinear dynamic analysis of complex structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to these specific implementations. Those skilled in the art will realize that the present invention covers all alternatives, modifications and equivalents as may be included within the scope of the claims.

[0058] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0059] Taking the nonlinear dynamic analysis of a complex high-rise building structure under the action of an earthquake as an example, the nonlinear fast dynamic time-history analysis method of the present invention is specifically described. The complex high-rise buildings such as figure 1 As shown, the first three periods of the model are T 1 =1.815s, T 2 = 1.579s and T 3 = 0.890s. The dynamic time history analysis method comprises the following steps:

[0060] The first step ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an improved generalized alpha method for nonlinear dynamic analysis of a complex structure. The method is a fixed iteration frequency analysis method for nonlinear dynamic time-history analysis of a complex structure under the action of an external dynamic load, and comprises the following steps of: 1, performing spatial finite element discretization on the complex structure, and establishing a motion equation set of a discrete system; 2, selecting parameters and determining global invariants; 3, calculating step by step, and calculating the displacement, speed and acceleration of each time step at the end moment. According to the method, two key improvements are carried out on the nonlinear iteration process of a traditional generalized alpha method, on the premise that the calculation precision is guaranteed, the calculation workload is greatly reduced, and the calculation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of structural design, and in particular relates to an improved generalized alpha method for nonlinear dynamic analysis of complex structures under the action of external dynamic loads. Background technique [0002] In recent years, complex structures have gradually increased, such as high-rise, super high-rise, long-span civil building structures, nuclear power plant reaction shells, auxiliary plant and other industrial building structures, as well as complex bridge structures such as cable-stayed bridges and suspension bridges, etc. Comprehensive "Building Structure Load Code", "Building Seismic Design Code", "Nuclear Power Plant Seismic Design Code", "Highway Bridge Wind Design Code", "Railway Bridge and Culvert Design Code", "Railway Engineering Seismic Design Code" and other specifications According to the relevant provisions of the National Standards, the above-mentioned large-scale and complex structur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F30/20
Inventor 徐俊杰
Owner 李鲁
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products