напружено-деформований стан

Statement of the problem and purpose of the work. The technology of machining hard-to-machine materials, which undoubtedly include high-alloy steels and chromium and nickel-based alloys, has some advantages over traditional abrasive machining methods. Among the most significant advantages, researchers note greater flexibility, faster changeover to other types of parts, the ability to combine several operations into one due to the versatility of the forming motion of the blade tool compared to the abrasive, higher productivity, and relatively low technological cost.

In the article the results of studies of stress-strained state of the crust in Chatkal`s mountain zone of west Tan-Shan are shown. In the first approximation the main and paleo-stresses for separate area of the region`s are estimated. For analysis of the stresses the methods of mathematical modeling and tectonophysical methods of stresses fields reconstructions and method of recovering of stresses by earthquakes mechanisms are used.

As a result of laboratory researches at uniaxial compression of core boring from Tashtagolsk iron-ore deposits it is established that stages of change of the deflected mode of formations confidently marks out by characteristics of electromagnetic issue. The polarisation current, which is arising in the course of deformation of rocks, correlates with changes of characteristics of dynamoelectric transformations.

A method for estimating and predicting abnormal layer and pore pressure during drilling of oil and gas wells using finite element method is elaborated. Utilizing simulated stress-strain state of a real model of a massif it is shown the qualitative agreement of results with theoretical calculations. We identified evaluation and prediction of pore and layer pressures and reservoir in the rock massif.

У статті розглядається можливість застосування методу коерцитиметрії для ідентифікації напружено-деформованих станів корпусу судна, який би ураховував невизначеність відносно миттєвого стану корпуса, вплив випадкових факторів, утому і старіння матеріалу суднових конструкцій. Проведено аналіз залежності коерцитивної сили і діючих напружень при статичному розтяганні плоских зразків конструкційних сталей, які найбільш поширені при будуванні корпусів суден. Наведені результати вимірювання коерцитивної сили матеріалу суднових конструкцій під час експлуатації судна.

Purpose. The aim of this work was to evaluate changes in the transfer characteristics of the seismic environment with additional loading of massive engineering structures. This analysis will help to more accurately assess the characteristics of sedimentary layer in the study of the transfer characteristics of environment under the engineering structures already at the design stage of construction. Methodology. Frequency characteristic of environment was obtained by solving the direct dynamic seismic problem.

On case example for the results of the geodesic control of geometric parameters ZORO is appreciated the influence of works as to pull of armatures bunches on tensely-deformed state acknowledging the effectiveness of geodesic works generally program as to ensuring of operational reliability RB APS with WWER-1000.