一种计算任意截面梁的等效截面参数的类有限元方法
By discretizing the cross-section beam using a finite element method, calculating the coordinates of the centroid and the moment of inertia, and determining the principal centroidal axis, the problem of calculating the equivalent cross-sectional parameters of beams with arbitrary cross-sections is solved. This method is applicable to both thin-walled and thick-walled cross-section beams, has small errors, and has broad application prospects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA SHIP SCIENTIFIC RESEARCH CENTER
- Filing Date
- 2023-07-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot effectively calculate the equivalent cross-sectional parameters of beams with arbitrary cross-sections, especially the complex shapes of thin-walled beams, which makes finite element analysis impossible.
The finite element method is used to discretize the cross-section beam into elements, calculate the coordinates of the centroid, establish a new coordinate system, calculate the moment of inertia and product of inertia, determine the centroid principal axis, calculate the equivalent torsional stiffness and polar moment of inertia based on the finite element algorithm, and determine the equivalent cross-section parameters.
It enables the calculation of equivalent section parameters for beams with arbitrary cross-sections, including moment of inertia and equivalent polar moment of inertia. It is applicable to both thin-walled and thick-walled beams, with small errors and broad application prospects.
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Figure CN116756853B_ABST