Poisson's ratio testing method and device and computer readable storage medium
A test method and Poisson's ratio technology, which is applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of difficult measurement and calculation of elastic-plastic Poisson's ratio and plastic Poisson's ratio, and achieve improvement Test efficiency and accuracy, easy automated test and calculation, high versatility
Pending Publication Date: 2022-01-28
NAT POLYMER MATERIALS IND INNOVATION CENT CO LTD
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[0005] Embodiments of the present invention provide a Poisson's ratio test method, device, and computer-readable storage medium, which overcomes the problem that the elastic-plastic Poisson's ratio and plastic Poisson's ratio are difficult to directly measure and calculate the results
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[0051]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0052] see figure 1 , is a schematic flow chart of a Poisson’s ratio test method provided by an embodiment of the present invention, comprising the following steps:
[0053] S1. Perform a deformation test on the sample to be measured by the test equipment, and measure a plurality of strain force data of the sample to be measured that changes with the test time during the deformation test; wherein, the plurality of strain force data includes stress...
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The invention relates to the technical field of material testing, and particularly discloses a Poisson's ratio testing method and device and a computer readable storage medium. The method comprises the following steps: carrying out the deformation testing of a to-be-measured sample, and measuring a plurality of strain data of the to-be-measured sample changing along with the testing time in the deformation testing process; according to the multiple pieces of strain force data, a longitudinal strain-stress value curve of the to-be-measured sample is obtained through calculation, elastic deformation stages are distinguished according to curve slope changes, and an elastic modulus value is calculated; and calculating a longitudinal plastic strain value according to the strain force data and the elastic modulus value, and calculating and outputting an elastic Poisson's ratio value, an elastic-plastic Poisson's ratio value-longitudinal strain relation curve and a plastic Poisson's ratio value-longitudinal plastic strain curve. According to the invention, a direct testing method for the elastic Poisson's ratio, the elastic-plastic Poisson's ratio and the plastic Poisson's ratio is established by combining theoretical and actual testing, the testing efficiency and accuracy are improved, and automatic testing and operation are easy to realize.
Description
technical field [0001] The invention relates to the technical field of material testing, in particular to a Poisson's ratio testing method, equipment and computer-readable storage medium. Background technique [0002] Poisson's ratio is a material parameter that must be involved in industrial design. It refers to the ratio of the absolute value of the transverse normal strain to the axial positive strain when the material is under unidirectional tension or compression. It is also called the transverse deformation coefficient. The elastic Poisson's ratio is commonly used in daily life, which is an elastic constant that reflects the lateral deformation of the material; at present, there are mature testing methods and testing equipment for the measurement of the elastic Poisson's ratio of the material. The strain variable, and then calculate the ratio to get. [0003] However, when the material enters the plastic deformation stage from elastic deformation, Poisson's ratio is n...
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IPC IPC(8): G06F30/20G06F30/17G06F119/14
CPCG06F30/20G06F30/17G06F2119/14
Inventor 陈涛吴博匡莉戴婷庞承焕叶海华李卫领黄克凡
Owner NAT POLYMER MATERIALS IND INNOVATION CENT CO LTD