Experimental Research of Dynamic Parameters of Stranded-Wire Helical Springs under Impact Load

2011 ◽  
pp. 113-118
Keyword(s):  
Experimental Research ◽  
Impact Load ◽  
Dynamic Parameters ◽  
Helical Springs

scholarly journals Analysis of elevators dynamic parameters with solution of summary data acquisition during experimental research

2021 ◽  
Vol 27 (4) ◽  
pp. 141-148
Author(s):  
Radomir Đokić ◽  
Jovan Vladić ◽  
Dragan Živanić ◽  
Tanasije Jojić ◽  
Vesna Jovanović ◽  
...  
Keyword(s):  
Experimental Research ◽  
Dynamic Behaviour ◽  
Building Construction ◽  
Complex Task ◽  
Dynamic Parameters ◽  
Standard Procedures ◽  
Unique Method ◽  
Basic Parameters ◽  
Stiffness And Damping ◽  
Summary Data

Modelling of the dynamic behaviour of elevators with high lifting velocities (contemporary elevators in building construction and mine elevators) is a complex task and an important step in the design process and creating conditions for safe and reliable exploitation of these machines. Due to high heights and lifting velocities, the standard procedures for dynamic exploitation are not adequate. With the purpose of identifying the basic parameters of the dynamic model (stiffness and damping), a unique method was applied, based on experimental measures for a concrete elevator. Due to the verification of this procedure, the experiment was conducted on a mine elevator in RTB Bor, Serbia. Simulations of the dynamic behaviour of an empty and loaded cage are presented using the obtained computational-experimental results

scholarly journals EXPERIMENTAL RESEARCH OF DYNAMIC PARAMETERS OF AUTO-OSCILLATING HYDRAULIC DRIVE OF AN ASYMMETRIC ACTION

2020 ◽  
Vol 8 (1) ◽  
pp. 35-39
Author(s):  
I. Yu. Kilunin ◽  
◽  
V. N. Sorokin ◽  
Keyword(s):  
Experimental Research ◽  
Hydraulic Drive ◽  
Dynamic Parameters

В статье приводится описание автоколебательного гидравлического привода несимметричного действия и стенда для его экспериментальных исследований, позволяющего определить основные динамические параметры исследуемого привода. В работе представлены характеристики привода при работе под нагрузкой и на холостом ходу.

scholarly journals Experimental Research Regarding The Motion Capacity Of A Robotic Arm

2015 ◽  
Vol 67 (1) ◽  
pp. 25-30
Author(s):  
Violeta Cristina Dumitru
Keyword(s):  
Experimental Research ◽  
Robotic Arm ◽  
Programming Environment ◽  
Dynamic Parameters ◽  
Functional Parameters ◽  
Mechanical Structure ◽  
Spatial Movement ◽  
Force Displacement

Abstract This paper refers to the development of necessary experiments which obtained dynamic parameters (force, displacement) for a modular mechanism with multiple vertebrae. This mechanism performs functions of inspection and intervention in small spaces. Mechanical structure allows functional parameters to achieve precise movements to an imposed target. Will be analyzed the dynamic of the mechanisms using simulation instruments DimamicaRobot.tst under TestPoint programming environment and the elasticity of the tension cables. It will be changes on the mechanism so that spatial movement of the robotic arm is optimal.

Experimental research on dynamic response of PZT-5H under impact load

2020 ◽  
Vol 46 (3) ◽  
pp. 2868-2876 ◽  
Author(s):  
Ruizhi Wang ◽  
Enling Tang ◽  
Guolai Yang ◽  
Yafei Han
Keyword(s):  
Dynamic Response ◽  
Experimental Research ◽  
Impact Load

scholarly journals Experimental research on biomass cutting process

2018 ◽  
Vol 157 ◽  
pp. 07016 ◽  
Author(s):  
Dominik Wilczyński ◽  
Krzysztof Talaśka ◽  
Ireneusz Malujda ◽  
Piotr Jankowiak
Keyword(s):  
Energy Consumption ◽  
Moisture Content ◽  
Cutting Force ◽  
Experimental Research ◽  
Rake Angle ◽  
Cutting Process ◽  
Energetic Efficiency ◽  
Dynamic Parameters ◽  
Prototype Test ◽  
Cutting Knife

This paper contains the results of the biomass cutting process in which wheat straw was used. Tests were made on the prototype test stand which made it possible to control the parameters of the cutting process and based on that define its energy consumption. During the research the following parameters were measured: rotational speed of electric motor, which drives the rotor with a set of cutting knives, electric current supply and torque on the shaft. Tests were made for the variable moisture content of the biomass and with knives with three different back-rake angles 5°, 15° and 30°. Using these measured parameters it was possible to calculate the power and the cutting force necessary to disintegrate biomass. The main goal was to find out if there is any influence of moisture content and the back-rake angle of the cutting knife on the dynamic parameters of the process - power and cutting force. The presented results can be very useful in a design process for a working assembly of biomass disintegrating machines which are directed to the energetic efficiency.

scholarly journals Experimental Research on Enhanced Denitrification by Biological Agents

2019 ◽  
Vol 136 ◽  
pp. 07022
Author(s):  
Xiaoyu Liu ◽  
Ruozheng Li ◽  
Zhengkun Li ◽  
Can Wang
Keyword(s):  
Experimental Research ◽  
Significant Role ◽  
Impact Load ◽  
Sewage Treatment ◽  
Load Resistance ◽  
Biological Agents ◽  
Removal Rates ◽  
Urban Sewage ◽  
Start Up

Biological agents play a significant role in sewage treatment, with good removal effect, low sludge yield, good performance, and shorten the system start-up time, impact load resistance and stability enhancement.This paper describes the characteristics ofbiological agents and the effect of biological agents on wastewater denitrification was investigated through experiments, so as to provide effective basis support for the wide application of biological agents in the field of urban sewage treatment.The experiment showed that through reasonable addition of biological agents,the removal rates of COD,NH3-N and TNinlowpollutantsewage treatmentwere increased by 41%, 15% and 62% respectively.

scholarly journals An Impact Vibration Experimental Research on the Pretension Rectangular Membrane Structure

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jianjun Guo ◽  
Zhoulian Zheng ◽  
Song Wu
Keyword(s):  
Experimental Research ◽  
Impact Load ◽  
Biaxial Tension ◽  
Membrane Surface ◽  
Spectral Density Function ◽  
Theoretical Research ◽  
Displacement Sensor ◽  
Theoretical Formula ◽  
Time Curve ◽  
Vibration Displacement

The pretension of the membrane is applied with biaxial tension bracket; the digital dynamometer is used for measuring the change of the tension; the concentrated impact load is applied on the surface of rectangular membrane; the displacement change of each feature point on the membrane surface is measured by noncontact laser displacement sensor. Through this experiment, the vibration displacement-time curve of the rectangular membrane under the fixed boundary condition is obtained. Further, the vibration frequency is given, according to the power spectral density function. The results of the experimental research are used to verify and correct theoretical formula and make the foundation for further theoretical research.

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