Method for computing equivalent Poisson ratio of concave honeycomb structure

Abstract

The invention discloses a method for computing an equivalent Poisson ratio of a concave honeycomb structure. The method for computing the equivalent Poisson ratio of the concave honeycomb structure comprises the following steps: computing a deformation delta 1 of a honeycomb cell wall so as to acquire a strain epsilon 1 of the honeycomb cell wall; and computing a deformation delta 2 of the honeycomb cell wall so as to acquire a strain epsilon 2 of the honeycomb cell wall, and then computing the equivalent Poisson ratio of the honeycomb structure through above data and a Poisson ratio formula. In the method of computing the equivalent Poisson ratio of the concave honeycomb structure, the strain epsilon 1 of the honeycomb cell wall is acquired by computing the deformation delta 1 of the honeycomb cell wall, the strain epsilon 2 of the honeycomb cell wall is acquired by acquiring the deformation delta 2 of the honeycomb cell wall, and then the equivalent Poisson ratio of the honeycomb structure is computed through the Poisson ratio formula. Compared with the prior art, the computing method is simple, and the computed data is accurate through the adoption of the computing method disclosed by the invention.

Description

technical field [0001] The invention relates to the field of honeycomb structure detection, in particular to a method for calculating the equivalent Poisson's ratio of a concave honeycomb structure. Background technique [0002] In the prior art, the negative Poisson's ratio honeycomb structure is generally concave, and the Poisson's ratio can be adjusted to suit various situations by adjusting various geometric parameters of the section. is of great significance. [0003] The traditional calculation method of Poisson's ratio of honeycomb structure directly uses beam bending theory to calculate strain and then calculate Poisson's ratio, which is cumbersome, and it is more difficult to use the above method when calculating Poisson's ratio of complex concave polygonal honeycomb structure. [0004] Therefore, it is desirable to have a technical solution to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art. Contents of the invention...

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Problems solved by technology

[0003] The traditional calculation method of Poisson's ratio of honeycomb structure directly uses the beam bending theory to calculate the strain and then calculate the Poisson's ratio, which is cumbersome, and it is more difficult to use the above method when calculating the Poisson's ratio of a complex concave polygonal honeycomb structure

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