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44 mm.

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## !$% & ' '

((() A.

3.03:

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( A *

x=0 (250Nm )MTAB=0

MTAB=250Nm

,) ( * C

x=0

(250Nm )+(2000Nm )MTB=0

MTB=2250Nm

/ C&

MTCDMTBC=2250Nm

,

JAB=

2c4=

2(0,015m)4

JAB=0,0795 106m

4

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c

(0,030m)

[4(0,022m)4]=0,904 106m

4

(24

c14

)=

2

JCD=

2

0' (((). ,(

! " ## !$% &

1

A=

i

TMiL

i

JiG =

1

G (M

TABLAB

JAB

+M

TBCL

BC

JBC

+M

TCDL

CD

JCD

)

A= 1

77GPa[(250Nm ) (0,4m )0,0795 106m4+(2250 ) (0,2 )

1,272106+

(2250 ) (0,6)

0,904 106 ]

A=0,01634+0,00459+0,01939=0,0403 rad

A=(0,0403 rad ) 360

2 rad=2,31

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3.5:

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& 2

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78. /

( &

(

1=

2

MT1L1

J1G1=MT2L2

J2G2

MT1(0,5m)

(2,003 106m4)(27GPa)=

MT2(0.5m)

(0,614 106m4)(77GPa)

9 ). ,(

1)alum70MPa

. ((

MT1= J1

c1

MT1=

(70MPa )(2,003 106m4 )0,038

MT1=3690Nm

MT2=0,874MT1=3225Nm

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!"#$=120MPa

MT2=!"#$J2

c2

MT2=

(120MPa )(0,614 106m4 )0.025

MT2=2950Nm

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