Experimental device for obtaining basic performance parameters of pipe hydraulic bulging

Abstract

The invention provides an experiment device for acquiring pipe hydro-bugling basic property parameters. The experiment device can acquire accurate material performance parameters. The experiment device for acquiring pipe hydro-bugling basic property parameters comprises a base and two end clamping devices, the end clamping mechanism comprises a fixing body and a movable body, the movable body can axially move in the fixed body, and the movable body has a structure capable of clamping a pipe end so that two ends of the pipe can be respectively clamped by the two end clamping mechanisms.

Description

Technical field [0001] The invention relates to an experimental device for pipe hydraulic bulging, in particular to an experimental device for obtaining basic performance parameters of pipe hydraulic bulging. Background technique [0002] The liquid-filled bulging technology of pipes has a great relationship with pipe performance parameters, such as strain hardening index n, anisotropy index r, etc., and the accuracy of these parameters affects the accuracy of finite element simulation technology and the process of thin-walled structural parts. Optimization has a significant impact, so it has become an urgent problem in the automotive industry and aerospace industry. [0003] At present, there are two main methods to obtain the performance parameters of pipes: one is to use the single tensile test of the plate to determine the material parameters. The test method is simple, but the result data is directly applied to the finite element simulation of the pipe liquid-filled bulging, w...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main methods to obtain the performance parameters of the pipe: one is to use the single-tension test of the plate to determine the material parameters. The test method is simple, but the result data is directly applied to the liquid-filled bulging finite element simulation of the pipe, which will produce large deviations

The other is the traditional pipe bulging test, but due to problems such as sealing and rigid mold clamping, the flow of materials in the radial direction is blocked, friction, etc., and more accurate material performance parameters cannot be obtained.

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