TECHNOLOGY OF CONSTRUCTION PROCEDURES. MECHANISMS AND EQUIPMENT

Microtopographic parameters of friction surfaces of construction machinery and equipment

Vestnik MGSU 9/2012
  • Gustov Yuriy Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Department of Mechanical Equipment, Elements of Machines and Technology of Metals 8 (499) 183-94-95, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Lyubushkin Kirill Aleksandrovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Mechanical Equipment, Elements of Machines and Technology of Metals 8 (499) 183- 94-95, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Orekhov Aleksey Aleksandrovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Mechanical Equipment, Elements of Machines and Technology of Metals 8 (499) 183- 94-95, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 179 - 184

The article covers the concepts, definitions and correlations of parameters of worn surfaces
within the coordinate system of relative pressures and convergences of interacting elements of
construction machines.
The authors provide their findings based on the research of microtopographic and tribological
engineering parameters of scoop hinges of construction drags and fused crushing plates of jaw
crushers. As for the drag hinges, the friction pair is to include steel 110Г1ZL and X-5 padding that
demonstrates high resistance to friction (=1.04) and low temperature of frictional heating (ƒ= 90
°C). Mobile plates of jaw crushers need electrodes VSN-9 and TsN-16 for padding purposes, as they
demonstrate the biggest frictional fatigue values (= 2.76 and 2.62, respectively) and insignificant
temperature of heating of friction surfaces (9.4 and 4.9 °C). Electrodes TsN-16, T-590 and KBKh-45
are recommended for fixed plates.
Microtopographic parameters of worn friction surfaces are used to analyze the main tribological
engineering parameters of operating elements and joints of construction machines and items of
equipment.

DOI: 10.22227/1997-0935.2012.9.179 - 184

References
  1. Gustov Yu.I. Povyshenie iznosostoykosti rabochikh organov i sopryazheniy stroitel’nykh mashin [Improvement of Wearability of Operating Elements and Joints of Construction Machines]. Moscow, MGSU Publ., 1994, 529 p.
  2. Korobko V. I. Zolotoe sechenie i problemy garmonii sistem [The Golden Section and Problems of Harmony of Systems]. CIS ASV Publ., Moscow, 1998, 373 p.
  3. Chihos H. Sistemnyy analiz v tribonike [The System Analysis in Tribology]. Moscow, MIR Publ., 1982, 351 p.
  4. Gustov Yu.I. Tribotekhnika stroitel’nykh mashin i oborudovaniya [Tribological Engineering of Construction Machines and Equipment]. Moscow, MGSU Publ., 2011, 192 p.
  5. Hebda M., Wachal A.. Trybologja. Wydawnictwa naukowo-techniczne. Warszawa, 1980, 611 p.
  6. Petrescu Florin Nicolae. Trjbologie. Institutul de Constructii Bucuresti. 1986, 275 p.
  7. Gustov Yu.I., Gustov D.Yu., Voronina I.V. Metodologiya opredeleniya tribotekhnicheskikh pokazateley metallicheskikh materialov [Methodology of Identification of Tribological Parameters of Metal Materials]. Collected works of the 16th Slovak-Russian-Polish Seminar “Theoretical Basics of Construction”. Zilina, Slovak Republic, 2007, pp. 339—342.
  8. Babichev A.P., Babushkina N.A., Bratkovskiy A.M. Fizicheskie velichiny: spravochnik [Physical Values: Reference Book]. Moscow, Energoatomizdat Publ., 1991, 1232 p.
  9. Gustov Yu.I., Voronina I.V. Modernizatsiya i remont samokhodnykh mashin [Modernization and Repair of Self-propelled Machines]. Materials of International Scientific and Technical Conference «Interstroymekh-2007». Samara, SGASU Publ., 2007, pp. 238—242.

Download

FATIGUE STRENGTH OF A STRUCTURAL ELEMENT EXPOSED TO ICE LOADING

Vestnik MGSU 10/2012
  • Uvarova Tat'yana Erikovna - Far Eastern Federal University (DVFU) Candidate of Technical Sciences, Associate Professor, Department of Hydraulic Engineering, Theory of Buildings and Structures, School of Engineering, 8 (423) 245-16-18, Far Eastern Federal University (DVFU), Office 407, 66 prospect Krasnogo Znameni, Vladivostok, 690014, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Pomnikov Egor Evgen'evich - Far Eastern Federal University (DVFU) postgraduate student, Department of Hydraulic Engineering, Theory of Buildings and Structures, School of Engineering, 8 (423) 245-16-18, Far Eastern Federal University (DVFU), Office 407, 66 prospect Krasnogo Znameni, Vladivostok, 690014, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 116 - 121

The cyclic nature of effects of ice loading contributes to the formation of non-reversible deformations and defects of structural elements that may cause loss of the bearing capacity of the structure due to the accumulation of fatigue damages in dangerous sections. The damages in question are caused by moderate loads of multiple repeatability. In order to assess the number of cycles of ice loading that the structure may be exposed to without any substantial damages, the authors have developed a simulation model of ice load formation that serves as the basis for the analysis of the loading pattern that the structure is exposed to. This loading pattern is the initial one for the purposes of calculation of the fatigue resistance of structural elements to ice load effects. In the research, the authors provide for the joint application of the simulation model of ice load formation and the model of accumulation of fatigue damages to assess the ice resistance of a platform and its reliability from the viewpoint of its failure.

DOI: 10.22227/1997-0935.2012.10.116 - 121

References
  1. Daley C.G. Ice Edge Contact — an Iterative Failure Process Model. Report no. M-103 by the Laboratory of Naval Architecture and Marine Engineering, Helsinki University of Technology, Espoo, 1990, 65 p.
  2. K?rn? T. Finite Ice Failure Depth in Penetration of a Vertical Indentor into an Ice Edge. Annals of Glaciology, 1993, vol. 19, pp. 114—120.
  3. Timco G.W. Indentation and Penetration of Edge-Loaded Freshwater Ice Sheets in the Brittle Rang. Proceedings of the 5th Conference on Offshore Mechanics and Arctic Engineering. Tokyo, 1986, pp. 444—452.
  4. Sodhi D. Ice Structure Interaction with Segmented Indentors. Proceedings of IAHR Ice Symp., Banff, Canada, 1992, pp. 909—929.
  5. Uvarova T.E. Metodika opredeleniya kolichestva tsiklov i rezhima nagruzheniya sooruzheniya dreyfuyushchim ledyanym pokrovom [Methodology of Identification of the Number of Cycles and the Drifting Ice Cover Loading Mode That the Structure Is Exposed to]. Vladivostok, 1999, 22 p.
  6. Kogaev V.P. Raschet na prochnost’ pri napryazheniyakh peremennykh vo vremeni (Biblioteka raschetchika) [Analysis of Strength in the Event of Time-variable Stresses (Library of a Computing Engineer)]. Moscow, Mashinostroenie Publ., 1977, 232 p.

Download

Results 1 - 2 of 2