Mavzu: Elastiklik chegarasidan keying hisoblar Reja: Mustahk


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Sana18.06.2023
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Bog'liq
elastiklikdan keyingi hisoblar

Yechish:

Muvozanat tenglamasini tuzamiz:




Nl
RA F RB  0 , l EA ,

l  lF  lRB  0 ,


1
lF EA2  EA ,


1
lRB   EA2  EA2  EA


1 1
l   EA2  EA2  EA EA2  EA  0
RA F RB  20011486kN

1. N bo’ylama kuchni aniqlaymiz:

1-uchastka N1 RB  0

N1  RB  114kN

2-uchastka N2 F RB  0



N2 F RB  86kN

3-uchastka N3 F RB  0



N3 F RB  86kN


N
2.  kuchlanishni aniqlaymiz:   A

1 A2  10104  11,4104 kN m2

2A2  10104  8,6104 kN m2

3 A1  15104  5,73104 kN m2


Nl
3. l mutloq deformatsiyani aniqlaymiz: l EA

l1 EA2  2108 10104  9,12104 m

l2 EA2  2108 10104  5,16104 m


1
l3 EA 2108 15104 4104 m
Tekshirish: l  0

l  l1  l2  l3  0 l  9.125.16 4  0

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