Development of methods for testing catenary cantilevers

2020 ◽  
pp. 93-97
Author(s):  
Olesya Andreevna Lukyanova ◽  
◽  
Alexander Vladimirovich Tarasenko ◽  
Ivan Evgenyevich Chertkov ◽  
◽  
...  
Keyword(s):  
Experimental Research ◽  
Spatial Position ◽  
Improved Method ◽  
Research Results ◽  
Method Of Calculation ◽  
Suspension Parameters ◽  
Number Of Factors ◽  
Environment Temperature

Catenary cantilevers are key devices that maintain the spatial position of catenary suspension wires. They determine the catenary parameters and indicators, increase of the calculation accuracy of which requires the consideration for maximum number of factors that affect the work of cantilevers in conditions of operation. The paper includes the overview of methods for testing catenary cantilevers and considers methods and devices for studying friction in cantilever connection joints, including those that consider environment temperature. As a result, the authors propose an improved method of calculation of catenary suspension parameters that is developed on the basis of experimental research results, the use of which will increase the accuracy of adjustment of wires and ropes.

EXPERIMENTAL STUDY OF THE KINEMATIC PARAMETERS OF MOVEMENT OF CARS FORCED IDLE MOTION

2018 ◽  
pp. 52-57
Author(s):  
Ivelin Kostov
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Experimental Research ◽  
Kinematic Parameters ◽  
Research Results ◽  
Software Product

In the work brought some experimental data of kinematic parameters of movement of cars forced idle, as the software product was used to diagnose 900 ATS, which recorded kinematic parameters of vehicle. On the basis of the conducted experimental research results are shown tabulated and analysed.

Experimental research control methods of the spatial position of building constructions

2017 ◽  
Vol 922 (4) ◽  
pp. 7-12 ◽  
Author(s):  
G.A. Shekhovtsov ◽  
R.P. Shekhovtsova ◽  
D.P. Ivenin ◽  
O.V. Raskatkina
Keyword(s):  
Simultaneous Determination ◽  
Experimental Research ◽  
Vertical Plane ◽  
Error Theory ◽  
Spatial Position ◽  
Bridge Crane ◽  
Building Structures ◽  
Control Methods ◽  
Engineering Geodesy

The article contains the method of discrete scanning points in the vertical plane of the columns and roof trusses for the simultaneous determination of vertical columns, the distance between them in flight at their tip and deflection farms with one point standing and only one performer. The technique is based on the use of reflectorless electronic tachymeter and its SDh key. Experimental research of methods on the elements of building structures NNGASU educational housing using electronic tachymeter SET530R. Results of the experiments were monitored by a coordinate and photographic methods, as well as with the developed at the chair of Engineering Geodesy laser-mirroring device designed to measure inaccessible or hard to reach distances. Analysis methods of error theory position and the results of its comparison with other methods have shown that it provides the required accuracy, easy to perform, does not require the output of the observer on the crane path or lift to the towers, free from the multiple engagement of the bridge crane and can be successfully applied on practice.

Improved Method Based on Fluid Mechanics Analysis for Buoy Gauge Design and Experimental Research

2012 ◽  
Vol 163 ◽  
pp. 133-137
Author(s):  
Ao Yu Chen ◽  
Xu Dong Pan ◽  
Guang Lin Wang
Keyword(s):  
Fluid Mechanics ◽  
Experimental Research ◽  
Traditional Method ◽  
New Method ◽  
Improved Method ◽  
Advanced Method ◽  
Inner Surface ◽  
Mechanics Analysis ◽  
Linear Property

Traditional method of buoy gauge design is rather complicated, so an advanced method by building and solving fluid mechanics equations is proposed in this paper. The curve of the taper pipe inner surface is calculated, according to different buoy gravity and diameter. In order to examine the effect of this improved method, an experiment is carried out. Results show that linear property of the buoy gauge improved by new method is excellent.

Research Progress on Reinforced Concrete Laminated Slab in China

2012 ◽  
Vol 174-177 ◽  
pp. 263-267
Author(s):  
Ming Li ◽  
Zhe Zhe Sun ◽  
Wei Jian Zhao ◽  
Yong Liu
Keyword(s):  
Reinforced Concrete ◽  
Experimental Research ◽  
Concrete Structure ◽  
Early Stage ◽  
Research Progress ◽  
Horizontal Load ◽  
Reinforced Concrete Structure ◽  
Research Results ◽  
Load Carrying ◽  
New Generation

The development of new generation prefabricated reinforced concrete structure is still at an early stage in China. Reinforced concrete laminated slab, as an important horizontal load carrying member, is paid much attention to in research. Based on the research results about it in China, the progress of which is summarized, including the form, characteristics and experimental research of sandwich laminated slab, anti-ribbed laminated slab, and hollow laminated slab etc. Finally, the further research is prospected.

The Ship Domain – A Criterion of Navigational Safety Assessment in an Open Sea Area

2008 ◽  
Vol 62 (1) ◽  
pp. 93-108 ◽  
Author(s):  
Zbigniew Pietrzykowski ◽  
Janusz Uriasz
Keyword(s):  
Artificial Intelligence ◽  
Safety Assessment ◽  
Research Results ◽  
Safe Navigation ◽  
Number Of Factors ◽  
Open Sea ◽  
Sea Area ◽  
Point Of Departure ◽  
Shape And Size

One of the basic tasks in shipping is to ensure safe navigation of vessels. The concept of the ship domain is of major importance in the assessment of a navigational situation and the avoidance of ship collisions. It is difficult to determine a ship domain as its shape and size depend on a number of factors. One question to be answered before the determination of the ship domain is which method to use: statistical, analytic, or expert method using artificial intelligence tools; other questions are connected with domain interpretation. The authors have analyzed the ship domain as a criterion for the assessment of ship navigational safety in an encounter situation in the open sea. The research results are used to answer some of the questions.Part 2 includes definitions of the ship domain and ship fuzzy domain. Part 3, in turn, presents methods of their determination as well as relevant questions. The results of the authors' research, described in Part 4, make up a basis for the determination of the domain and ship fuzzy domain. These have been determined with the so-called dynamic domains as a point of departure. The criteria of ship domain and closest point of approach are compared and discussed. Encounters of various size ships are considered in Part 5. The research and its results are described. Both ship domains and ship fuzzy domains of encountering ships are analyzed. Then, conclusions have been formulated in relation to the effect of the sizes of encountering ships on the shapes and sizes of their domains. Final conclusions are given in Part 6.

Research on the Characteristic of Diesel Elastic-Plate Impingement Spray

2012 ◽  
Vol 433-440 ◽  
pp. 116-122
Author(s):  
Chang Yuan Wang ◽  
Fu Shui Liu ◽  
Xiang Rong Li
Keyword(s):  
Experimental Research ◽  
Elastic Plate ◽  
High Speed ◽  
Incident Angle ◽  
Injection Pressure ◽  
High Speed Photography ◽  
Research Results ◽  
Free Jet ◽  
Constant Volume Chamber ◽  
Spray Droplets

A series of experimental research results on the characteristic of diesel elastic-plate impingement spray using High Speed Photography camera are presented in this paper. The experiments were carried out in a constant volume chamber specially designed, which can hold a high ambiance pressure. The special fixed device was designed so that the elastic-plate can be fixed on the spray path, meanwhile the spray incident angle and height can be changed. The free jet spray and elastic-plate impingement spray was compared under the same experimental condition including different injection pressure and different background pressure. Experimental research showed that impingement spray droplets diffuse more quickly than free jet spray.

Recommending suitable learning paths according to learners’ preferences: Experimental research results

2015 ◽  
Vol 51 ◽  
pp. 945-951 ◽  
Author(s):  
Eugenijus Kurilovas ◽  
Inga Zilinskiene ◽  
Valentina Dagiene
Keyword(s):  
Experimental Research ◽  
Research Results ◽  
Learning Paths
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