In this research, we described the behavior of the valve by a mathematical model of
the discharge pressure valve and then we studied the vibrations frequency of the hydraulic
system which has plotted the pressure in a short period of piston pump in
absence and in
presence of discharge pressure valve.
The results of this study showed special vibrations frequency relationship of the
discharge pressure valve and hydraulic system where this relationship could decide the
effectiveness of the protection system before loading. It also showed that dynamic pressure
factor in absence of discharge pressure valve is j1=110% while the presence of the valve
is j2 = 20%.
Raman spectra of Carbon Tetrachloride in Methanol solutions were
measured. Spectral lines n1 (symmetric stretch vibrations), n3 (asymmetric
stretch vibrations) of Carbon Tetrachloride were analyzed. The Raman spectra
were fitted using Peak-Fit sof
tware applying a sum of Gaussian and Lorentzian
components. Results indicate that, there is a clear difference in the behavior of
peak position and width of the two type of vibrations with varying the
structural composition of the surrounding environment due to varying of the
methanol concentration. On the other hand we found that a similarity in the
dependence of the intensity of spectral lines on the concentration of methanol,
with a high degree of non-linearity.
This paper deals with computer simulation methods when constructing the
equipment in iron rolling mill plants for dimensioning machines, which have become more
important in the recent years. And it determines the ideal prerequisites to simulate dri
ving
system for electrical and mechanical subsystems. The drive systems is built around several
components which have their own technology and multiple time-scales: electrical
machines, power semiconductor, control circuits from the firing sequences to the different
regulators. This requires the simulation of both the electrical and mechanical components
in one model. The use of a uniform simulation program offers the possibility to combine in
mechanical modeling with the electrical necessities. This research will be in the description
of the simulation-aided design and its relationship with vibration caused by the twisting
torque using the drive systems.
The foundations are considered an important part for optimal operation and investment, and
for increasing productivty, and getting rid of all dynamic problems.
The research aims to show that when concrete foundations are preformed in an inconsisten
t
way, it will cause damaging vibrations in the machines. That was affirmed through a practical
case.
