deformation

The article considers innovative approaches to improving the accuracy of measurements of mechanical quantities by strain gauges. Particular attention is paid to sources of additional errors caused by external factors, such as temperature, vibration, power instability and structural imperfections of the sensor. An analytical review of modern methods of error compensation and promising technologies in the field of sensor measurements is presented

In two craters near Emmerting, three major processes which variably affected the original pebbles are documented in the following order: 1. Deposition of hot material which solidified to glass (usually thin and transparent) or reacted with carbonate to form expanded “pumice” on the surface of pebbles. 2. Ductile deformation of variable intensity (with limited fragile deformation but intense fracturing of mineral grains), using older as well as newly formed discontinuities; in some cases this deformation is consistent with extreme strain, rendering a human-induced origin highly improbable.

A variety of mechanisms, each designed with distinct specifications, find application in diverse sectors of the machine engineering industry. The utilisation of apparatuses comprising mechanical components in the field of medicine is also evident in the context of patient rehabilitation. These mechanisms are orthoses. The design of such systems is subject to a stringent set of specifications, which include compactness, light weight, and reliability. The purpose of orthoses is to replicate lost functions as closely as possible to a healthy human.

Mechanisms with gears are used in various fields of mechanical engineering according to the needs. Orthoses are used to rehabilitate patients in the postoperative period or during the restoration of lost limb functions. For patients to comfortably use orthoses, they must be compact, lightweight, and reliable. Gear shafts are the most loaded structural elements of such devices.

The operation of railway rolling stock under high-speed conditions is crucial for Ukraine, as it will increase the throughput and carrying capacity of the railway network and improve the mobility of people in large cities. The dynamic behavior of the pneumatic spring, as the main structural element of the suspension system of high-speed rolling stock, has been studied. It is noted that the issue of the dynamic performance of the pneumatic spring is of broad scientific interest, as it directly affects the dynamic indicators and safety of the rolling stock when interacting with the track.

The article discusses the improvement of the digital image correlation (DIC) method for analyzing deformations in RC beams, specifically focusing on the importance of zero-strain verification. This step is critical for ensuring high measurement accuracy, as it helps identify and minimize systematic and random errors. Before starting the research, system calibration is conducted, which includes the assessment of background noise and stability that influence the results.

Gear transmissions of various sizes are used in various fields of mechanical engineering, automotive, marine, and aerospace industries according to the needs. This paper presents the modeling and analysis of the modal and harmonic characteristics of a planetary gear transmission for an elbow orthosis. Orthoses are used during the rehabilitation of patients in the postoperative period or during the restoration of lost limb functions. When modeling the planetary gear, the connection elements are made of 45 steel and PLA polylactide.

The goal of the work is to develop a mathematical model of a workpiece bending process by copier to determine the necessary parameters of the process and increase its efficiency. Significance. The quality of the process of workpiece bending by copier depends on many factors and is accompanied by both elastic and plastic deformations. Therefore, a mathematical description and analysis of the workpieces is an urgent issue, because it will allow to justify the parameters of the process and increase its efficiency. Method.

Викладено підхід до розрахунку деформацій та напружень у біметалевій пластині, викликаних зміною температури. Отримані розрахункові залежності є основою при математичному моделюванні біметалевих давачів температури різноманітних конфігурацій та типорозмірів.

The approach to calculation of deformation and stresses in bimetallic plate caued by temperature changes is made. The given calculation of dependence is the basis at mathematical modelling of temperature bimetallic indication of various configuration and typemeasures.

Розглянуто методи моделювання і аналізу просторово-часових деформацій сенсорних мереж. Розглянуто властивості міри близькості отриманих від сенсорної мережі зображень при використанні методу компенсації інформаційних потоків дозволяють зменшити функціональне навантаження на підсистему класифікації.