Ship stern bearing interference press-fitting quality prediction method considering complex meteorological conditions
By establishing a multi-physics coupling model that considers ambient temperature, solar radiation, and wind speed, the problem of inaccurate prediction of stern bearing press-fit quality in existing technologies has been solved, a four-dimensional evaluation system has been realized, hidden risks have been identified, and assembly accuracy and reliability have been improved.
CN121997651APending Publication Date: 2026-05-08WUHAN UNIV OF TECH
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Patent Information
- Application Number
- CN202610066705.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-19
- Publication Date
- 2026-05-08
AI Technical Summary
Technical Problem
Existing ship stern bearing press-fitting methods fail to accurately simulate complex weather conditions in open-air environments, leading to inaccurate press-fitting quality predictions and posing a high risk.
Method used
A multiphysics coupling model was established, taking into account ambient temperature, solar radiation and wind speed. Through fluid calculation and structural coupling simulation, the pressing force, contact area, energy consumption and cylindricity error were evaluated, and a four-dimensional evaluation system was constructed.
Benefits of technology
It enables accurate prediction of pressing quality under complex weather conditions, identifies hidden risks, avoids pressing failures, and improves assembly accuracy and reliability.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a ship stern bearing interference press-fitting quality prediction method considering complex meteorological conditions. The method comprises the following steps: constructing a full-size multi-physical field simulation model; establishing a fluid calculation environment considering solar radiation; loading temperature field data for structural calculation; simulating a nonlinear contact interference press-fitting process; the press fitting curve, the press fitting contact area, the energy consumption in the press fitting process and the cylindricity error of the stern bearing after press fitting are used as evaluation indexes, and the press fitting failure risk is subjected to multi-dimensional quantitative evaluation. According to the method, the variable characteristics of the real environment temperature and the wind speed serve as the time-varying boundary conditions to be dynamically applied to the model, and quantitative evaluation of the dynamic change of the wind speed on the press-fitting quality is achieved; a solar radiation model and a DO radiation model are set in fluid calculation to realize accurate loading of non-uniform radiation heat flow, so that temperature field distribution of the stern shaft tube is accurately predicted; by constructing a multi-dimensional quantitative evaluation system, various failure risks in the press-fitting process are comprehensively identified.
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