Creep compression fixture

Abstract

The invention provides a creep compression fixture which comprises a commutator. The commutator comprises an upper pressing block and a lower pressing block. The bottom surface of the upper pressing block and the top surface of the lower pressing block are provided with triangular prism-shaped upper and lower positioning holes into which the tail ends of samples extend respectively. Upper and lower fastening holes which run through the upper and lower positioning holes from the outside are arranged in positions corresponding to the upper and lower positioning holes on the side walls of the upper and lower pressing blocks respectively. Abutting members for abutting against the samples in the transverse direction of the samples are arranged in the upper and lower fastening holes. According to the invention, the parallelism of the samples with the center of the compression fixture during an installation process is optimized; the alignment of the samples during a compression process is ensured; difference in left and right deformation is reduced; the test accuracy is improved; the test stress range is expanded to ensure the repeatability and integrity of test data and the operation safety; test steps are simplified; the test time is saved; used samples and the number of times of use of a machine are greatly reduced; and the creep compression fixture has the advantages of energy saving and environmental protection.

Description

technical field [0001] The invention relates to creep test equipment, in particular to a creep compression fixture. Background technique [0002] With the rapid development of my country's industry, creep age forming technology is also making continuous progress. Creep age forming technology is the main forming technology for large-scale panels such as aircraft and rockets. In the actual creep age forming of aluminum alloy and other materials Previously, finite element software was generally used for creep aging forming simulation, and the most suitable actual forming scheme was determined through software simulation. Before the creep aging forming simulation of the material, the creep performance of the material should be tested. A creep testing machine is commonly used. The material to be tested is processed into a sample, and the sample is clamped in the creep testing machine. Between the upper and lower tensile rods, the creep tension or compression test is carried out o...

AI Technical Summary

Problems solved by technology

Since there is also an installation gap when the thread is screwed, there is still a possibility that the sample may shake slightly left and right during the compression process, and the neutrality is not good enough, and the left and right deformation of the sample during the creep aging test There is a certain difference in the amount, which affects the accuracy of the test data. Therefore, a better solution is needed in the prior art to solve this problem

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