tribologie laboratoare unitbv
TRANSCRIPT
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Transilvania University of
Brasov
Faculty of Mechanical Enginnering
Tribology Laboratory
Student: Thierheimer Alexandru
Year I, group 19!,"A#
$oord%: &rof% #r% Ing% "elicu 'adu (a)riel
Academic Year 2015-2016
Semester I
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Lab1. Chain rig
Chain rig components:
1 Electrical engine;
2 Torquemeter (torque sensor);
3 Torsional coupling;
4 Lower earing o!;
" #pper earing o!;
$ Chain %ri&e;
' Tensioning orce sensor;
Tensioning control electrical engine* worm gear* screw+nut transmission;
, Chain lurication circuit;
1- .earings lurication circuit;
11 /ain oil tan0 (chain lurication) with heater;
12 .earing oil tan0;
13 Cooling circuit or oil
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Lab2. Global Chain Drive Friction Measurements vs.Rotation anTensioning
* ** 1*** 1** +*** +***
**
1***
1**
+***
+**
***
**
Testing !rogram
Te-ting &rogram
t" sec
n r#m
1*** 1+** 1.** 1!** 1/** +*** ++** +.** +!** +/** ,***
1
1%1
1%,
1%.
1%!
Friction tor$ue vs. Rotation % &'
Acceleratie #eceleratie
n" r#m
Mf" 'm
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1+** 1+* 1,** 1,* 1.** 1.* 1** 1*1%*.
1%*.
1%*
1%*
1%*!
1%*!
1%*0
1%*0
1%*/
1%*/1%*9
Mf vs. Time %&' %((( r#m
Mf -% Time
tim#" s
Mf" 'm
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1** 1* 1!** 1!* 10** 10* 1/**1%.
1%.1
1%.+
1%.,
1%..
1%.
1%.!
Mf vs. Time 2(((r#m
Mf -% Time +***rpm
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1/** 1/* 19** 19* +*** +** +1**1%!.
1%!
1%!!
1%!0
1%!/
1%!9
1%0
1%01
1%0+
1%0,
Mf vs. Time %&' )(((r#m
Time" s
Mf" 'm
* 1** +** ** .** ** !** 0** /** 9** 1****
**
1***
1**
+***
+**
***
**
Testing *eries )&'
t" sec
m" r#m
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9** 11** 1,** 1** 10** 19** +1** +,** +** +0** +9** ,1** ,,**1%0
1%/
1%9
+
+%1
+%+
+%,
+%.
+%
+%!
Friction tor$ue vs. Rotation ) &'
Acceleratie #eceleratie
n" r#m
Mf" 'm
* * 1** 1* +** +* **1%0
1%0
1%0!
1%0!
1%00
1%00
1%0/
1%0/
1%09
1%091%/
Mf vs. Time )&' %(((r#m
Time" s
Mf" 'm
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** * .** .* ** * !**+%*/
+%1
+%1+
+%1.
+%1!
+%1/
+%+
Mf vs. Time )&' 2(((r#m
Time" s
Mf" 'm
!** !* 0** 0* /** /* 9** 9*+%!
+%/
+%.
+%.+
+%..
+%.!
+%./
+%
Mf vs. Time )&' )(((r#m
Time" s
Mf" 'm
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9** 1.** 19** +.** +9***
*%
1
1%
+
+%
Friction tor$ue vs. Rotation
F 2 134 F 2 34
n" r#m
Mf" 'm
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Lab). Global Chain Drive Friction Measurements vs.
Tem#erature
* +** .** !** /** 1*** 1+***
1*
+*
,*
.*
*
!*
0*
Tem# Ulei
T!:Temp ulei lant T0:Temp ulei lagar
Time" sec
T" gr C
* .* . * 1%1
1%+
1%+
1%
1%
1%.
Friction Tor$ue vs. Tem#
$re-tere Temperatura #e-cre-tere Temperatura
Tem#" gr C
Mf" 'm
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Lab4. Chain Friction vs. Bearing Friction
ier%erile prin recare %in lagare si lant sunt %irect proportionale cu paramtrii (n* * T)
%ata cu cresterea &ite5ei %e rotatie* a ortei %e tensionare in lant sau a temperaturii uleiuluipier%erile prin recare cresc
Cel mai mare contriutor la pier%eri este orta %e tensionare a lantului urmata %e &ite5a %e
rotatie* in unctie %e uleiul olosit temperature acestuia este un actor care inluentea5a %estul %eputin pier%erile prin recare
La orte mici %e tensionare lagarele se ala in 5ona %e luriiere mi!ta sau hi%ro%inamica* o%ata
cu cresterea ortei %e tensionare luriierea poate tin%e spre limita
La &ite5e oarte mici lagarele se ala in luriiere limita spre mi!ta* iar cu cat &ite5a creste
lu&riierea intra in %omeniul mi!t sau hi%ro%inamic* la cresteri oarte mari ale &ite5ei* poate trece
in %omeniul %e luriiere limita
La temperaturi normale %e unctionare uleiul se ala in %omeniul %e luriiere mi!ta si
hi%ro%inamica Cu cat temperature creste sau sca%e %rastic* luriierea poate trece in %omeniul
limita
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Tribometru
Se cere (ra5c $6F7"ite8a
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