A Method for Obtaining ε~n Fatigue Curve Test of Rubber Material under Typical Loading Conditions
A rubber material, fatigue curve technology, applied in the field of ε~N fatigue curve test acquisition, can solve the problems of less test support, long test equipment time, long test cycle, etc., and achieve the effect of less test support and wide application range
Active Publication Date: 2019-06-21
ZHUZHOU TIMES NEW MATERIALS TECH
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to obtain the fatigue ε~N curve data of rubber materials completely through direct test at present, which consumes a long test cycle and takes up a long time of test equipment, and cannot provide fatigue data in time to meet the formula Insufficient development and product development needs, provide a method for obtaining ε~N fatigue curve tests under typical loading conditions of rubber materials that require less test support and have a wide range of applications
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[0040] see figure 1 , the steps of the method for obtaining the ε~N fatigue curve test under the typical loading conditions of the rubber material in this embodiment include:
[0041] 1) Determine the three basic strain ratios of the fatigue test according to the actual application conditions of the rubber material;
[0042] In this embodiment, the rubber material in step 1) specifically refers to the vulcanized rubber material. Among the three determined basic strain ratios, the first strain ratio λ is set to 0, the second strain ratio ε is set to -1, and the first strain ratio ε is set to -1. The three strain ratios β are between 0 and -1, and the specific value of the third basic strain ratio is based on the actual application conditions of the rubber material, and the approximate strain that the rubber material may bear in actual application is determined by the finite element method Than get.
[0043] 2) Three test data points are tested for each basic strain ratio, and...
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Abstract
The invention discloses a testing acquisition method of epsilon-N fatigue curve under rubber material typical bearing working conditions. The testing acquisition method comprises following steps: three basic straining ratios are determined, testing of three test data points of each of the basic straining ratio is carried out, model construction of test samples is carried out, and simulating calculation of the relation curve of the bearing of rubber test samples with principal strain is carried out; fatigue load spectrum conditions of fatigue test are determined; the relationship data of fatigue numbers with fatigue strain when fatigue failure of the rubber test samples is observed in fatigue test is recorded, and is introduced into a fatigue equation for fitting so as to obtain the fatigue parameters of the rubber material under the three basic straining ratios; the fatigue equation is used for calculating fatigue data, and obtaining the epsilon-N fatigue curve under the three basic straining ratios based on the fatigue parameters. The testing acquisition method possesses following advantages: less test support is needed, and application range is wide.
Description
technical field [0001] The invention relates to a material test and analysis technology of a rubber damping element, in particular to a method for obtaining an ε-N fatigue curve test under a typical loading condition of a rubber material. Background technique [0002] Due to its good elastic behavior and excellent fatigue performance, rubber materials are widely used in the field of vibration reduction and isolation of rail transit, automobile transportation and construction machinery, and have achieved good application results. During the actual service of rubber components, a small number of rubber components were forced to be replaced in advance due to serious fatigue damage before reaching the design life, and many rubber components were found to be The product is still in good condition and can even be used for a long time. Therefore, these two cases of large deviations from the design life have caused waste of resources and property losses to varying degrees, especiall...
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IPC IPC(8): G01N3/32
CPCG01N3/32G01N2203/0073
Inventor 黄友剑荣继纲卜继玲王进
Owner ZHUZHOU TIMES NEW MATERIALS TECH