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

A technology of high-speed tensile and test equipment, which is applied in the direction of testing the strength of materials with one-time impact force, and can solve the problems of not being able to obtain the mechanical properties of elastic cable hyperelastic materials

Inactive Publication Date: 2009-08-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0021] In this embodiment, a high-power high-speed motor is used as the elastic cable high-speed stretching device of the loading device. Tensile jig 5 , sample 4 , post-tensile jig 3 , load sensor 2 , support 1 , continuous displacement measurement system 13 and data acquisition system 14 . In this embodiment, a laser continuous displacement measurement system is used as the continuous displacement measurement system 13 .

[0022] In a specific implementation, one end of the load sensor 2 is fixed on the support 1 , and the other end is fixedly connected to the rear tensioning fixture 3 . On the horizontal plate of the support 1, a guide groove 6 with a longitudinal section of "concave" shape is fixedly installed, and the front stretching clamp 5 is installed in the guide groove 6, and can move along the guide groove, and its upper surface exposes the guide groove the top of the top; the continuous displacement measurement system 13 is installed on both sides of the guide gr...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/31
Inventor 索涛李玉龙赵峰陈春林郭伟国
Owner NORTHWESTERN POLYTECHNICAL UNIV
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