Method for improving rotation stress stripe level value of epoxy resin photoelastic model

A technology of epoxy resin and photoelasticity, which is applied in the field of photoelasticity testing, can solve the problems of similarity principle and test accuracy to be improved, and achieve the effects of low equipment loading capacity, high precision, and high test accuracy

Inactive Publication Date: 2020-07-10
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology

[0004] The invention provides a method for improving the rotational stress stripe level value of the epoxy resin photoelastic model, so as to solve the problem that the original photoelastic test load cannot

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  • Method for improving rotation stress stripe level value of epoxy resin photoelastic model

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] refer to figure 1 , the preferred embodiment of the present invention provides a kind of method that improves epoxy resin photoelastic model rotational stress fringe level numerical value, comprises steps:

[0033] S1. Select the local features of the rotating test piece to be studied;

[0034] S2. Design and prepare an epoxy resin photoelastic model according to the local characteristics of the selected rotating test piece;

[0035] S3. Installing multiple epoxy resin photoelastic models on the rotating disk according to the set rotation radius and layout and freezing them;

[0036] S4. Slicing each frozen epoxy resin photoelastic model, and reading the stress fringe series of each e...

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Abstract

The invention discloses a method for improving a rotation stress stripe level value of an epoxy resin photoelastic model. The method comprises the following steps: selecting local characteristics needing to be researched of a rotation test piece; designing and preparing an epoxy resin photoelastic model according to the local characteristics of the selected rotary test piece; installing a plurality of epoxy resin photoelastic models on a rotating disc according to a set rotating radius and layout, and freezing the epoxy resin photoelastic models; slicing the frozen epoxy resin photoelastic models, and reading the stress stripe levels of the epoxy resin photoelastic models. According to the invention, the real working conditions of parts are better simulated, the parts are closer to load similarity, the similarity principle is satisfied, the test precision is improved, the rotation photoelastic test of multiple local characteristics is carried out at the same time, and the test cost canbe greatly reduced.

Description

technical field [0001] The invention relates to the field of photoelasticity test, in particular to a method for improving the numerical value of rotation stress fringe of epoxy resin photoelastic model. Background technique [0002] At present, the stress distribution of the test piece obtained by the photoelastic test is the main technical means used to evaluate the working stress in the product prototype design, and plays an important role in the strength analysis of product design. The photoelastic test object is the photoelastic model. With the high-speed development of small and medium-sized aero-engines, the requirements for the photoelastic test for strength analysis are further increased, and the test is required to be closer to the real working environment. However, the test equipment has certain limitations on the applied load. Sometimes the stress stripes in the model are sparse after the test, and the highest stress stripe level value is relatively small. In thi...

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Application Information

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IPC IPC(8): G01L1/24G01L25/00
CPCG01L1/241G01L25/00
Inventor 郭天才李建华朱涛徐友良
Owner AECC HUNAN AVIATION POWERPLANT RES INST
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