Health monitoring method for steel ring of port machinery based on unit compromise coefficient to correct residual stress

A technology of residual stress and health monitoring, applied in the health monitoring of port machinery steel rings, based on the unit compromise coefficient to correct the residual stress field, can solve the problems of low monitoring efficiency and low accuracy, improve accuracy and efficiency, and avoid limitations Effect

CN110954311BActive Publication Date: 2021-06-01YANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-06-01

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Abstract

The invention discloses a health monitoring method for a port machine steel ring based on a unit compromise coefficient to correct the residual stress, comprising the following steps: S1, residual stress measurement of the key area of ​​the port machine steel ring; S2, determination of the direction of the main unit of the residual stress; S3 . Solving the calibration coefficient of residual stress in the direction of the main unit; S4. Solving the correction value of the compromise coefficient combined with the calibration coefficient of residual stress; S5. Solving the real-time health status of the steel ring of the port machine based on the correction of the compromise coefficient of the unit. The method is accurate and efficient.
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Description

technical field

[0001] The invention relates to a steel ring health monitoring method, in particular to a port machine steel ring health monitoring method based on unit compromise coefficient correction residual stress. Background technique

[0002] At present, in industrial production, port machinery steel rings are used a lot, and the health status of port machine steel rings has attracted more and more attention from the society. Under such a background, if the health status of large-scale port machinery rims cannot be monitored in real time, accidents cannot be grasped and avoided. Therefore, real-time monitoring of the health status of large-scale port machinery rims is necessary and urgent. There are many methods for monitoring the health status of the rim of the port machine, but most of them judge the health state of the rim of the port machine by comparing the stress value of a small number of measuring points with the fracture stress limit value corresponding to th...

Examples

Embodiment Construction

[0036] Such as figure 1 As shown, this embodiment is based on the unit compromise coefficient to correct the residual stress monitoring method for the health status of the steel ring of the port machine. The method includes the following steps:

[0037] S1. Residual stress measurement of key areas of port machinery steel ring:

[0038] According to experience, the common vulnerable areas of port machine steel rings are determined, the corresponding port machine steel ring areas are marked, and X-ray residual stress measuring devices are arranged in the common damage marked areas to collect X, Y, The residual stress values ​​in the three directions of Z, namely: σ rix , σ riy , σ riz .

[0039] S2. Determination of the direction of the main element of residual stress:

[0040] On the basis of S1, substitute the following formula for the residual stress direction coefficient Q of each damaged area in the X, Y, and Z directions αi , Q βi , Q γi Perform the calculation and...