Young's modulus testing device and method based on highly nonlinear solitary wave of folding chain
A technology of Young's modulus and testing method is applied in the field of Young's modulus testing device based on highly nonlinear solitary wave of folded chain, which can solve the problem that Young's modulus technology cannot measure elastic modulus, and achieves simple structure, The effect of the equipment is convenient to manufacture and the size is easy to carry
Active Publication Date: 2022-02-08
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0005] In order to solve the above-mentioned defects existing in the prior art, the purpose of the present invention is to provide a Young's modulus based on the highly nonlinear solitary wave of the folding chain of a sphere chain structure with a certain initial preload and which can be measured in the transverse direction The test method solves the problem that the existing solitary wave test material Young's modulus technology cannot test the elastic modulus in the horizontal direction
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[0027] The invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.
[0028] like figure 1 As shown, the present invention is a Young's modulus measuring device based on the highly nonlinear solitary wave of the folding chain, including an electromagnet 1, a smooth pipe 2, a steel ball 3, a thin wire 4, a sensor 5, a thin aluminum sheet 6 and a signal acquisition device 7; Among them, 24 steel balls 3 are placed in the middle of the smooth pipe 2 to form a sphere chain, and the sphere chain forms an obtuse angle oblique chain structure. An electromagnet 1 is arranged on the top of the smooth pipe 2, and in the smooth pipe 2 on the horizontal plane A sensor 5 and a signal acquisition device 7 connected to the sensor 5 are provided. At the end of the horizontal plane of the smooth pipe 2, a thin aluminum sheet 6 on the smooth pipe is provided for the back ...
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The invention discloses a Young's modulus testing device and method based on the highly nonlinear solitary wave of the folding chain. Several steel balls are placed in the middle of the smooth pipe to form a spherical chain of the oblique folding chain, and an electromagnet is arranged on the top. A sensor connected to the signal acquisition device is installed in the smooth pipe, and a thin aluminum sheet is arranged at the horizontal end of the smooth pipe for the back cover, and the measured material is placed on the side of the thin aluminum sheet. By powering on and off the electromagnet at the end of the sphere chain, the steel ball at the top of the smooth pipe is sucked up and falls, and hits the sphere chain to generate solitary waves and reflected waves; using the relationship between relative displacement and Young's modulus, the folded chain is obtained Young's modulus for highly nonlinear solitary waves. The invention solves the problem that the existing solitary wave testing material Young's modulus technology cannot test the elastic modulus in the horizontal direction.
Description
technical field [0001] The invention relates to a method for testing the Young's modulus of an elastic material, in particular to a testing device and method for the Young's modulus based on a highly nonlinear solitary wave of a folding chain. Background technique [0002] Young's modulus of elasticity (Young's modulus for short) is one of the most important and characteristic mechanical properties of elastic materials, which marks the rigidity of materials. Young's modulus is a commonly used parameter in engineering technology design, and it is also one of the important basis for selecting the material of mechanical parts. The determination of Young's modulus is of great significance to the study of the mechanical properties of various materials such as metal materials, optical fiber materials, semiconductors, nanomaterials, polymers, ceramics, bridges, roads, etc., and is widely used in mechanical parts design, biomechanics, construction Strength testing, geology and othe...
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IPC IPC(8): G01N3/00G01H11/08
CPCG01N3/00G01H11/08G01N2203/0055G01N2203/0075G01N2203/0676
Inventor 侯宏李龙飞杨建华邓雯
Owner NORTHWESTERN POLYTECHNICAL UNIV