Trapezoidal straight corrugated plate production method

Abstract

A trapezoidal straight corrugated plate production method includes: dividing a trapezoidal straight corrugated plate into a plurality of calculation units; establishing a strain energy equation of thecalculation units; solving a periodic function of the calculation units; on the basis of the periodic function of the calculation units, calculating equivalent plate tensile rigidity, equivalent plate bending rigidity and equivalent plate stretch bending coupling of the calculation units; by analysis software, calculating tensile rigidity, stretch bending rigidity and tensile coupling of the trapezoidal straight corrugated plate on the basis of the equivalent plate tensile rigidity, equivalent plate bending rigidity and equivalent plate stretch bending coupling of the calculation units. By replacement of the trapezoidal straight corrugated plate with a flat plate in corresponding equivalent rigidity, unit amount and the total degrees of freedom of finite element models in global analysisare sharply decreased, and equivalent rigidity is obtained through section analysis of the trapezoidal straight corrugated plate. By finite element analysis or closed analytical solution for calculating integral performances of the trapezoidal straight corrugated plate, efficiency in performance calculation of the trapezoidal straight corrugated plate is remarkably improved, and accordingly trapezoidal straight corrugated plate production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of production methods, in particular to a production method of trapezoidal straight corrugated boards. Background technique [0002] A plate shell is a thin three-dimensional body composed of two approaching curved or plane surfaces. In engineering applications, the lack of resistance to shear, compression and bending loads of thin plates can be compensated by corrugated structures. Compared with the flat plate, the corrugated plate has repeated curvature along a certain direction on the plane, and its macroscopic behavior is mainly controlled by this curvature. Generally speaking, the bending of corrugated plates cannot be separated from its stretching in a certain direction, which makes its structural analysis more complicated than that of flat plates. [0003] In the production process of the trapezoidal straight corrugated board, it is necessary to carry out the structural design of the trapezoidal str...

AI Technical Summary

Problems solved by technology

In the prior art, the designed trapezoidal straight corrugated plate structure is usually directly subjected to finite element analysis. However, this method requires a large-scale finite element model, and the calculation amount is large and the efficiency is low.

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