Karpunova Y. 3. Ground of parameters of the dynamic loadings of mine metallic frame headgears, constructed of the elements of channel sections.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0406U003519

Applicant for

Specialization

  • 05.15.04 - Шахтне та підземне будівництво

22-06-2006

Specialized Academic Board

Д 08.080.04

National Technical University Dnipro Polytechnic

Essay

There is а ground for design model of the headgear in the work. The work also contains derived differential equations of а dynamic state of the lathe part of the headgear which is presented in the form of tough interrelated cores and lumped masses under the influence of the external loads by way of pulsed impact, sudden application of the constant force and during the harmonic excitation. The proper frequencies show the tendency to the formation of isolated frequency groups, arranged in the fundamentally non-covering areas. The fact of the dominant frequencies presence in the considered scheme is the evidence of the fact, that the timbers of the headgear in the node points possess the most substantial partial kinetic energy output exactly on these frequencies. This fact plays an important role for constructing of the approximate methods for studying of dynamic states of headgears and can later be а subject for further researches.

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