CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR

  • TITLE: CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR
  • AUTHOR(S): I. N. Mitev
  • ABSTRACT: CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR

CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR

  • TITLE: CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR
  • AUTHOR(S): I. N. Mitev
  • ABSTRACT: CHARACTERISTICS BY INDUCTION HEATING OF METALS IN CYLINDRICAL INDUCTOR

DIAMOND BURNISHING OF RAIL-END-BOLT-HOLES – FINITE ELEMENT SIMULATION

  • TITLE: DIAMOND BURNISHING OF RAIL-END-BOLT-HOLES – FINITE ELEMENT SIMULATION
  • AUTHOR(S): G. V. Duncheva, J. T. Maximov, V. T. Kuzmanov, A. P. Anchev
  • ABSTRACT: This article presents the outcomes from finite element (FE) simulation of the diamond burnishing of rail-end-bolt-holes. A reliable 3D FE model of the studied process has been developed with a view to fundamental understanding of the residual stress formation. The introducing of beneficial residual circumferential normal stresses around the treated hole closes the existing cracks and impedes the formation of new ones and thus enhances the fatigue life of the rail road.

FINITE ELEMENT INVESTIGATION OF BENDING LOAD-CARRYING CAPACITY OF STRUCTURAL ELEMENTS WITH NONCIRCULAR OPENINGS

  • TITLE: FINITE ELEMENT INVESTIGATION OF BENDING LOAD-CARRYING CAPACITY OF STRUCTURAL ELEMENTS WITH NONCIRCULAR OPENINGS
  • AUTHOR(S): M. D. Ivanova, G. V. Duncheva
  • ABSTRACT: The paper presents the outcomes from an investigation of bending load-carrying capacity of plate with non-circular opening. The main purpose of the investigation is directed to obtaining an assessment of the beneficial effect of applying of different methods for cold expansion of preliminarily drilled holes situated in the zones with fillets. The task is solved as series of numerical simulation are carried out. The comparative analysis is made on the basis of the residual hoop normal stress redistribution around the concentrators after positive and negative bending moment loading. The loading is applied by preliminarily determined kinematic impact. It is proved that the method called Controlled Symmetry Cold Expansion ensures the most intensive and homogeneous compressive zone around the concentrators.

SYNTHESIS AND ANALYSIS OF METHODS FOR FINISHING MACHINING OF HOLES BY SURFACE PLASTIC DEFORMATION WITH APPLICATION OF DIFFERENTIAL MORPHOLOGICAL METHOD

  • TITLE: SYNTHESIS AND ANALYSIS OF METHODS FOR FINISHING MACHINING OF HOLES BY SURFACE PLASTIC DEFORMATION WITH APPLICATION OF DIFFERENTIAL MORPHOLOGICAL METHOD
  • AUTHOR(S): M. G. Atanasova
  • ABSTRACT: SYNTHESIS AND ANALYSIS OF METHODS FOR FINISHING MACHINING OF HOLES BY SURFACE PLASTIC DEFORMATION WITH APPLICATION OF DIFFERENTIAL MORPHOLOGICAL METHOD
  1. COLLEGE STUDENTS ATTITUDE TOWARDS ENGINEERING PROFESSION, INNOVATION IN MATHEMATICS EDUCATION AND MATHEMATICAL MODELING
  2. DIRECTIONS OF IMPROVEMENT OF INNOVATIVE DEVELOPMENT OF INDUSTRY OF UKRAINE UNDER IMPERFECT COMPETITION
  3. QUALITATIVE FACTORS: ANALYSIS OF IMPACT AND CONDITIONS FOR PROVIDING THE COMPETITIVENESS OF COUNTRY
  4. THE DEVELOPMENT OF EMPLOYMENT POTENTIAL WITH THE POSITION OF SPATIAL BALANCING OF REGION

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