A Finite Element Analysis Method for the Dynamic Response of Plate and Shell Structures with Large Rotational Deformation

A technology of plate and shell structure and analysis method, applied in the field of finite element analysis, can solve the problems that important conservation characteristics are not reflected
CN104281730BInactive Publication Date: 2018-01-02NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2018-01-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a finite element analysis method for the dynamic response of a plate shell structure with large rotational deformation, and belongs to the field of calculating nonlinear structural dynamics. The method comprises the following steps: 1. Establishing a geometric model of the plate and shell structure in computer-aided design software, and then importing it into computer-aided engineering software for mesh division; 2. Establishing a plate and shell element analysis model that takes into account the effect of large rotation deformation ;3. Introduce the time integration algorithm and iterative technology to establish the calculation and analysis model for the dynamic response analysis of the plate and shell structure; 4. Compile the finite element analysis program; 5. Configure the computing environment to calculate the dynamic response of the plate and shell structure. The invention provides an effective calculation and analysis tool for the calculation of the dynamic response of the plate shell structure involving large rotational deformation. For the structural system without external force, this method can not only conserve the structural energy, but also conserve the structural momentum, which makes up for the shortcomings of the existing analysis techniques.
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Description

technical field

[0001] The invention relates to a finite element analysis method for the dynamic response of a plate shell structure with large rotational deformation, and belongs to the field of calculating nonlinear structural dynamics. Background technique

[0002] Plate and shell structures are widely used in various structural projects due to their excellent mechanical properties. Since they are often accompanied by nonlinear dynamic phenomena of large displacement and large rotation when subjected to external loads, efficient and practical analysis techniques are developed to calculate their The nonlinear dynamic response has important research significance and wide application value for its design and vibration control.

[0003] Finite element analysis is a computer-aided solution method that uses numerical simulation techniques to find approximate solutions to partial differential equations that describe the mechanics of a structure under load. With the continuous a...

Claims

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