Restoring of engines and generators foundation frames by means of the composite material «Multimetal Stahl 1018»
DOI:
https://doi.org/10.31498/2225-6733.32.2016.83931Keywords:
stress, turbine, diagram, foundation frame, «Multimetal Stahl 1018», algorithm, Microsoft Excel, Solid WorksAbstract
The problem as to the use of the modern composite material «Multimetal Stahl 1018» («MM Stahl 1018») to restore the frames of the foundation under the turbine generators of thermal power plants has been studied in the article. The surfaces of the supporting parts of the foundation are known to wear out and ruin under operating conditions. Substantial financing is required to restore them. The proposed «MM Stahl 1018» due to its composition and consistency makes it possible to ensure high accuracy contact of the supporting surface and the frames of the foundation, protecting the frames against corrosion as well. The polymeric cylindrical samples mounted into the grooves of the frame have been studied. The aim of the research was to study the stress-strain state of the sample under the action of uniformly distributed pressure, taking into account static and vibratory loads. The results of solving the problem of Michell elasticity theory have been used; the values of normal, shearing and principal stresses in the sample have been obtained. With the help of the Microsoft Excel program, the numerical analysis of the problem for different values of the design parameters of the sample have been carried out and the depth of the samples getting into the grooves in the foundation frames have been calculated. The results of the analysis are tabulated in a table and the strain and stress diagrams have been constructed. The diagrams of stress and strain for the model made in the program Solid Works 3D of the sample with the same parameters have been created. The algorithm of practical research of the stress-strain state of the sample, which can serve as a constructive solution for the restoring and design work at energy producing and other business enterprises has been offeredReferences
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