Detection device of contact stress distribution

A distributed detection and contact stress technology, applied in the direction of measuring devices, measuring force, instruments, etc., can solve the problems of detection objects, accuracy, real-time, convenience limitations, etc., to avoid vibration interference, simple structure, good combination performance Effect

Inactive Publication Date: 2010-10-20
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have certain restrictions on detection objects, accuracy, real-time performance, and convenience.

Method used

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  • Detection device of contact stress distribution
  • Detection device of contact stress distribution
  • Detection device of contact stress distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] refer to Figure 1-4 , a contact stress distribution detection device, including an upper workbench 1, a lower workbench 9, a pneumatic vibrator 12 and a spherical indenter module, and the upper workbench 1 and the lower workbench 9 are provided with diagonal strip grooves 3, 10, connected and fixed by fixing bolts 4, 8, the upper workbench 1 and the lower workbench 9 are provided with inline array holes 2, 11 for installing the pneumatic vibrator 12, and the upper workbench 1 A circular hole 16 for installing a plane sample is opened at the position facing the spherical indenter module; the spherical indenter module includes a spherical indenter 5, and the spherical indenter 5 is installed on the upper end of the holder 6 and connected to the plane sample. In contact, the lower end of the cage 6 is attached with a pressure sensor 7 for measuring the vibration pressure of the spherical indenter module and is vertically installed on the cross-shaped array hole 17 of the ...

Embodiment 2

[0029] The difference between this embodiment and the first embodiment is that the pneumatic vibrator 12 is installed on the in-line array hole 2 of the upper worktable 1 . The rest of the structures and functions are the same.

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Abstract

A detection device of contact stress distribution is composed of an upper workbench, a lower workbench, a pneumatic vibrator and a spherical indenter module, wherein the upper workbench and the lower workbench are respectively provided with a diagonal strip-shaped groove which is connected and fixed by fixed bolts and a linear shape array hole for installing the pneumatic vibrator, the position of the upper workbench dead against the spherical indenter module is provided with a round hole for installing a plane sample, the spherical indenter module comprises a spherical indenter which is arranged on the upper end of a retainer and is contacted with the plane sample, and the lower end of the retainer is attached with a pressure sensor for measuring the vibrating pressure of the spherical indenter module and a cross-shaped array hole which is vertically arranged on the lower workbench together with the pressure sensor. The invention has the beneficial effects of simple structure, easy manufacturing and installation and good combined properties, satisfies polytrope requirements and reduces interference caused by vibration.

Description

technical field [0001] The invention relates to a contact stress distribution detection device, in particular to a stress state detection device for detecting the stress state at the contact point of a rotating body through thermoelastic effect. Background technique [0002] At present, stress distribution detection is being widely used to solve practical problems in structure and material design. For example, during the use of key components in an engineering system, the internal stress state will directly affect the performance and service life of the material. Therefore, the detection of stress distribution is a work worthy of attention. [0003] Stress distribution-related detection methods include magnetic memory detection method, photoelastic patch method, fiber Bragg grating method, surface acoustic wave elastic stress detection method, X-ray diffraction method, etc. These methods have certain restrictions on detection objects, accuracy, real-time performance, and co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/00
Inventor 计时鸣郑高安金明生张利张伟东侯海鹏
Owner ZHEJIANG UNIV OF TECH
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