Method for measuring bending resistant property of material and test instrument for method

Abstract

The invention relates to a method for measuring the bending resistant property of a material and a test instrument for the method and belongs to the field of research of theoretical mechanics, applied mechanics and experimental mechanics. According to the method, research is performed on the basis of an action study theory, and a conclusion that under the control of a bending action, any point P on a shaft complies with two basic equations including an unbalanced motion equation and a bending overcoming action equation which are shown in the specification is drawn. The method has the benefits as follows: the problems of unscientific parameter selection of conventional measurement of the bending resistant property and imperfection of a bending resistant theory and a test method are solved on the basis of a new theory about the relation among the bending action, bending deformation and shaft properties, a new bending property research theory and a new bending property measurement method are established, the test instrument for measuring the bending property is provided, and good foundation is laid for more scientific selection of bending resistant materials.

Description

technical field [0001] The invention relates to a method for measuring the anti-bending properties of materials and a testing instrument thereof, belonging to the research fields of theoretical mechanics, applied mechanics and experimental mechanics. Background technique [0002] Traditional theoretical mechanics, applied mechanics, and experimental mechanics lack sufficient understanding of the flexural properties of materials. At present, the selection of parameters to measure the flexural properties is based on the strength theory of traditional mechanics, and the flexural strength is used as an index to measure the flexural properties of materials. In fact, there are many indicators of bending resistance, such as bending resistance, bending degree, instantaneous bending resistance, and long-term bending resistance are all indicators to measure the bending resistance of materials. Most importantly, conventional theory has no way of predicting how much a material will bend...

AI Technical Summary

Problems solved by technology

However, due to the lack of the concept of action and the lack of the correct scale concept to measure the bending properties of materials, it is difficult to determine the limit value of material resistance action through experiments, and it is difficult to determine the scale value of material bending resistance or bendability, that is, it is difficult to determine the bending resistance of materials. Illusion and Solidity of Material in Bending Deformation

Therefore, there are certain defects in the traditional bending theory and testing methods.

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