Hyper-elastic material high-speed stretching tester and experiment method

Abstract

The invention relates to a high-speed stretching tester for a hyperelastic material and an experimental method. A speed regulation motor (12) is connected with a mass disc (10) through a coupler (11); the mass disc is connected with a turnplate (8) through a clutch (9); and two ends of a haulage rope (7) are fixedly connected with the turnplate (8) and a front stretching clamp (5) respectively. A test sample (4) is arranged between the front stretching clamp (5) and a rear stretching clamp (3). The centerlines of the haulage rope (7), the front stretching clamp (5), the test sample (4), the rear stretching clamp (3) and a load sensor (2) are in the same plane. When the speed regulation motor (12) rotates at high rotational speed, the outer edge of the turnplate (8) coaxially connected with the speed regulation motor (12) has high linear velocity and drives the haulage rope (7) to be wound on the turnplate (8) at a high speed and simultaneously drives the test sample (4) to move along the direction of the haulage rope (7) to allow the test sample (4) to have deformation; and the high-speed stretching tester solves the problem that a Hopkinson pull rod and other loading devices are adopted and cannot apply large elongation on the test sample and has the characteristics of simple operation and reliable testing data.

Description

1. Technical field [0001] The invention belongs to the technical field of dynamic performance testing of materials, in particular to a high-speed tensile test device and an experimental method for superelastic materials. 2. Background technology [0002] Elastic rubber plays a role in absorbing energy during the short-distance interception process, but because the entire interception process has a short action time and is a transient process, the elastic arresting cable is subjected to dynamic loads during the arresting process, so its Tensile mechanical properties are the key to the design of the arresting mechanism. Conventional experimental methods can only obtain its mechanical properties under static loads, and the Hopkinson tension rod test device for measuring dynamic tensile mechanical properties of materials can only apply a small amount of elongation to the sample. Due to the large ultimate elongation of elastic cable-like hyperelastic materials, it is difficult f...

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Problems solved by technology

[0003] In order to overcome the deficiency in the prior art that the complete mechanical properties of elastic cord hyperelastic materials under dynamic load cannot be obtained, the present invention proposes a high-speed tensile test device and experimental method for hyperelastic materials

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