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Afișează articolele 461-470 of 1945
Study on the Relationship Between Stability and Energy Efficiency of Hydraulic Excavators
(Universitatea "Dunărea de Jos" din Galați, 2014)
The cycle of operation of hydraulic excavators has a series of steps in
which large masses are accelerated and then braked. The presence of
additional masses on the excavators improves stability but reduces energy
efficiency. ...
Some Aspects Regarding the Working Periods of Mechanical Systems Driven with Hydraulic Feedback
(Universitatea "Dunărea de Jos" din Galați, 2014)
The mechanisms of mechanical systems, driven by hydraulic feedback systems, have two degrees of mobility. Between the power system and the feedback system there is a hydraulic connection whose behavior is affected by a ...
A Study of Hand-Arm Vibrations for the Foresters Workers
(Universitatea "Dunărea de Jos" din Galați, 2012)
The foresters workers are especially exposed to hand-arm transmitted vibrations.
These vibrations can cause the complex of vascular, neurological and
musculoskeletal disorders, collectively named hand-arm vibration ...
The Nonlinear Behavior Identification of the Dynamic Insulation Systems Used in Viaduct Structure
(Universitatea "Dunărea de Jos" din Galați, 2012)
Because of the destructive effects of seismic movements on bridges and
viaducts, it was required to embed the structure of seismic devices with the
role of maintaining structural integrity and post-seismic functionalit ...
Comparative Study of "Revolve" Command in the Average-Class Design Software Taught in the Higher Education
(Universitatea "Dunărtea de Jos" din Galați, 2012)
The paper aims to present a comparative study of "Revolve"
control/command or equivalent controls that are found in the following
design software, namely Mechanical Desktop 6, Inventor 2011 and Solid
Works 2008. In other ...
On the Use of Approximate Numerical and Analytical Methods in Order to solve the Differential Equations that Describe Vibrations of the Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2012)
The paper makes a comparative study on the approximation errors of the
solutions of the differential equations of second order using different
numerical methods, a study which is assessed by the necessity of numerical
solving ...
The Possibilities of Increasing Efficiency and Confidence of the Calculations for Hydraulic Cylinders Provided with Cushioning System at System at end of Race
(Universitatea "Dunărea de Jos" din Galați, 2012)
Working with specialized software, fluid flow analysis has the disadvantage
of being time-consuming. Also, modern computers are needed. This paper
presents a way of combining simulation with specialized programs of ...
Comparative Study on the Applicability of "Extrusion" Command in the Design Software Taught in Higher Education Institutions
(Universitatea "Dunărea de Jos" din Galați, 2012)
The paper aims to present a comparative study of "Extrude"
control/command or equivalent controls that are found in the following
design softwares: Mechanical Desktop 6, Solid Edge v. 20 and Solid Works
2008. In other ...
Comparative Analysis Between Operational Performances of Motor Grader Equipments
(Universitatea "Dunărea de Jos" din Galați, 2012)
This paper generally deals with technological equipments for construction
and agricultural works, and evaluated the operational performances for
motor-grader equipments. Starting from a large review of modern ...
Non-Linear Dynamic Behavior of a Ball Float Valve
(Universitatea "Dunărea de Jos" din Galați, 2012)
The dynamic behavior of the spherical body floating in a liquid, part of a
ball float valve, is analyzed from the point of view of the dynamic systems
theory. The study of the motion illustrates the differences between ...