The Theory of Similarity and Analysis of Dimensions for Determining the State of Operation of Structures under Difficult Loading Conditions

Materials

Vladimir Marasanov¹  Dmitry Stepanchikov²  Petr Louda³  Artem Sharko³  Aleksandr Sharko⁴ 

[1] Department of Automation and Computer-Integrated Technologies, Kherson National Technical University, 73008 Kherson, Ukraine;Department of Energetics, Electrical Engineering and Physics, Kherson National Technical University, 73008 Kherson, Ukraine;Department of Material Science, Technical University of Liberec, 461 17 Liberec, Czech Republic;Department of Transport Technology and Mechanical Engineering, Kherson Marine Academy, 73000 Kherson, Ukraine;

关键词: similarity theory;    modeling efficiency;    complex loads;    residual life;   

DOI  :  10.3390/ma15031191

来源: DOAJ

【 摘 要 】

A simulation mathematical model of the state of operability of metal structures under difficult operating conditions without stopping the equipment was developed in the form of similarity criteria found on the basis of the laws of conservation of data obtained experimentally during tensile and four-point bending tests. Criteria are proposed for the similarity of the state of the material of the samples and the products in service, in which the kinetics of destruction are determined through the rate of damage accumulation and the movement of the structural components of the material. The residual life of the equipment under conditions of complex deformation effects was determined based on the theory of similarity and the analysis of the dimensions of the parameters of acoustic emission in real time. The use of concepts and models of fracture mechanics when creating methods and criteria for assessing the results of diagnostics and monitoring allows important information about the technical state of objects to be obtained.

【 授权许可】

Unknown