# finite element method

## Layer and pore pressure assessment and prediction in the rock massif using numerical modeling

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.

## Computer simulation of measuring transducers used for diagnosis of icing in solidworks software package

There is a number of disadvantages in existing systems of diagnosing ice formation on overhead electric power distribution lines, under the conditions of climate change. In particular, they do not meet actual precision requirements. A 3D model of a measuring traducer being the part of an improved predictive diagnostic system was designed in the SolidWorks software environment.

## Оптимізація геометричних параметрів під час розрахунків деталей у середовищі CAD/CAE AutoCAD – Mechanical

The problems of geometric optimization of Euclidean space іn finite element method with involvement of computer means in the calculation of details in the environment of CAD/CAE AutoCAD — Mechanical.

## Computer Designing and Modeling of Technological Processes With High Speed Milling of Hardened Steel

The article presented and explained an algorithm creating a competitive manufacturing technology engineering products from hardened steel. Peculiarities treatment of hardened steel. The possibility of realization of multi-objective optimization process high-speed milling hardened steels based on the finite element method (FEM). A new method for determining the domain of existence of optimal technological modes of processing materials based on FEM.

## FEM elements enriched with meshfree functions: overview and application

A speciﬁc method of coupling FEM and meshless/meshfree methods is presented. This method is based on placing meshfree nodes inside the ﬁnite element and as a result improving the overall approximation on that element. Advantages and disadvantages of such approach are explained. It is shown that such approach is a version of a more general one. Numerical experiments are presented and analyzed.

## Analysis of forced vibrations metal mast lifting device

The analysis of forced vibrations of the mast metal construction of the building lifting device is performed in this article; the finite element method is applied in this process. The amplitude-frequency characteristics of the mast were formed by using theoretical and experimental investigations of oscillatory phenomena in the driving system of the lifting device.

## Exterior boundaries of the objects in modeling with finite element method

The problems of wave field modeling with finite element method in unbounded domains and methods to deal with them are analyzed. To obtain optimal solution, using of infinite elements is proposed on the boundaries of the modeled area combined with standard finite-element modeling inside the area. It is important however to choose the shape functions of infinite elements depended on the conditions of wave decay at infinity.

## The strain-stress state modelling of the sedimentary complex in collision zone and dynamic conditions of early thrusts formation in the Ukrainian Carpathians

Series of the finite-element 2D-models of thrusts in the flysh basin on the base of elastoplasticity equations for piecewise-homogeneous medium are proposed. Using computer modelling the formation mechanism of thrusting in the Ukrainian Carpathians during Early Cretaceous is improved. Within the framework of the complex analysis the fields of calculated stresses and strains of the sedimentary rocks in the collision zone are studied. The place of first thrusts with general Carpathian orientation, the role of tectonic displacements and paleo-basin basement morphology are determined.

## Problem of assessing of the earth’s surface strain state by geodetic data

Analysis of nature of estimation of the earth’s surface deformations by geodetic data and the methods to solve this problem has been done in recent geodynamical research. The necessity of improvement of existing methods of data processing has been substantiated. The alternative approach to solving the problem based on the theory of surface reflection and the ways of its implementations are suggested.

## Reliability of results of processing of geodetic data by finite element method

The problems of reliability of results of processing of geodetic data by finite element method are analyzed. Some optimized solutions and prospects of the method are disclosed.