INVESTIGATION OF THE STRESS-STRAIN STATE OF COMPONENTS OF A HYDRAULIC IMPACT DEVICE

Abstract

One of the most important problems facing the exploration, oil, gas and mining industry is increasing productivity and quality of used machinery and technology. This paper presents the results of the study of the stress-strain state of parts of a hydraulic impact device. The investigated device has a source of low-frequency vibrations in the form of a hydraulic vibrating module, including a base machine, an actuating element, an electro-hydraulic control unit, and an electronic block for monitoring a technological process. The electronic block for monitoring of technological process receives signals from the sensor of flow and concentration of metal, installed at the outlet of the pumping well, converts them with a recorder, a decoder, and a corrector, and transmits them to the electro-hydraulic control unit, where electronic signals are transformed into hydraulic ones and transmitted to the actuator. The purpose of the study is to investigate the stress-strain state of components of a hydraulic impact device and its further use in the exploration industry in good drilling. The ANSYS Explicit Dynamics module was used to study the stress-strain state of hydraulic impact device components, which makes it possible to analyze the physical picture of high-speed processes for objects subjected to strictly non-linear, alternating dynamic loads. The strength verification was carried out using the Mises maximum stress criterion. The criteria are based on the Mises-Hencky theory, also known as the energy theory of deformation. As a result, the strength and stiffness of the hydraulic impactor element are ensured. For the more loaded element,