Abstract
In connection with the global increase in the intensity of use of working equipment related to high-risk facilities and the expiry of the service life limit, the question arises of determining the actual technical condition and forecasting the residual resource. From the analysis of the approaches to determining the technical state and on the analysis of regulatory documents, it becomes clear that the regulated methods of assessing the technical state are obsolete, such that they do not ensure the reliability of the obtained control results. A new technique for determining the actual technical state through monitoring the level of stresses in the body of high-risk objects is proposed. The new technique takes into account additional physical and mechanical parameters that affect the stress-strain state, and have not yet been used. In other words, the technique of multivariable control of stress determination was proposed. Mathematical models of the process of deformation and stress for cylindrical vessels with a spherical and conic dome operating under the action of high pressure are proposed.
Highlights
The objects of increased danger are operated practically in each sector of industry, which are different in their structure and principle of operation
The main objective and mandatory requirement for the operator is the reliability of the results obtained to determine the actual technical condition of the process equipment
(2017), «EUREKA: Physics and Engineering» Number 4 technique represents mathematical models of the deformation and stress state of vessels operating under pressure, taking into account additional physical and mechanical parameters
Summary
The objects of increased danger are operated practically in each sector of industry, which are different in their structure and principle of operation. The main parameters that characterize the ability of these industrial objects to perform the tasks are strength, stability and stress, as well as the possibility of permissible displacement of structures that does not lead to violations of stable functioning All these characteristics can be combined into a single indicator that can be considered a priority for assessing the technical condition and residual life of MO: vessels that are under the influence of high pressure and SSS. When studying the stress state of vessels working under pressure, the approach modeled and justified in [11] is used According to this approach, the technique for determining the component of the stress tensor and deformations using known coordinates of a certain set of points on the surface of the object is used to evaluate the change in the SSS. The coordinates r for these two parts will satisfy the conjugation conditions RID=R’ID cosθ and ROD=R’OD cosθ
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