Latvian Maritime academy
Latvian Maritime academy
Latvian Maritime academy
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(11), we shall get the following formula for time t <br />
, necessary for achievement of given compression<br />
quantity h :<br />
n<br />
or in stretch quantities (18), also<br />
we shall get:<br />
2<br />
4<br />
2 <br />
<br />
P<br />
t<br />
1<br />
1<br />
<br />
2 2<br />
2<br />
3<br />
<br />
(20)<br />
vh<br />
<br />
mH<br />
bHR<br />
m<br />
<br />
m<br />
<br />
t<br />
<br />
<br />
;<br />
1<br />
2uq<br />
1 2<br />
2<br />
4<br />
(21)<br />
3H<br />
u<br />
<br />
(22)<br />
For small quantity of stretch velocity, we shall approximately get:<br />
<br />
<br />
1<br />
<br />
1 qu<br />
(23)<br />
1<br />
q q 2<br />
u<br />
q 2 <br />
2<br />
Diagrams of dependence <br />
from the rolling velocity and for quantities q 0, 01 and q 0, 5 at<br />
0,1 are shown in fig 3.<br />
Conclusions<br />
Figure 3. Diagrams of dependence <br />
from rolling velocity and for quantities<br />
q=0,01(curve 1) and q=0,5 (curve at λ =0,1)<br />
Task on determination of achievement time of given compression of inside raised dust surface layer<br />
of bush of marine engine when rolling it with rolling arrangement is solved. Closed analytical formulas<br />
for compression quantity, its corresponding time depending on rolling velocity and force compressed the<br />
roll are obtained.<br />
References<br />
1. Баширов, Р. Дж. Повышение эффективности восстановления втулок цилиндров судовых<br />
двигателей. Диссертация на соискание учёной степени доктора наук. Баку, 2003.<br />
2. Ишлинский, А. Ю. О качении жестких и пневматических колес по деформируемому<br />
грунту. В сборнике “Прикладные задачи механики”. Часть 1 “Механика вязкопластических и не<br />
вполне упругих тел”. Москва: Наука, 1986.<br />
3. Качанов, Л. М. Основы теории пластичности. Москва, 1969.<br />
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