R. X. Maksudov
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R. X. Maksudov
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ce-c0i cr MPa, [6.22] q0- eni 1 mm b o ‘lgan tasmalar uchun foydali kuchlanish, qiymati material turiga bogTiq b o i i b quyidagicha olinadi. Foydali kuchlanish Tasm a qatlamlarning materia i BK N L-65 Т А - 150 TK-200-2 TA-300 q0, N /m m 3 10 13 20 с a - Yetaklovchi shkiv qam rov burchagini tasmaning tortish darajasiga ta ’sirini hisobga oluvchi koeffitsiyent Q am rov burchagi a x 180 170 160 150 140 130 120 110 100 90 c ,< Y assi tasmali uzatm alarda 1.0 0.97 0.94 0.91 0.88 0.85 0.82 - Ponasim on va yarim ponasim on tasmali uzatm alarda 1.0 0.98 0.95 0.92 0.89 0.86 0.83 0.78 0.74 0.68 C,-uzatm ani tezligini hisobga oluvchi koeffitsiyent. R ezinalangan tasm alar uchun c„ = i.04-0.0004??2, sintetik tasm alar uchun c n = l.oi-o.ooo \ d \ ponasim on va yarim ponasim on tasm alar uchun C„ = 1.05 -0.0005 d'. C„ - uzatm ani gorizontga nisbatan jo y lan ish in i hisobga oluvchi koeffitsiyent, bunda a 0 -6 0 , 6 0 -8 0 , 8 0 -9 0 c„ 1.0 0.9 0.8 Ponasim on va yarim ponasim on tasmali uzatm alar uchun c„ - 1,0. 131 C P - uzatm aning ishlash rejimini va dinam ik yuklanishini hisobga oluvchi koeffitsiyent. Yuklanish xarakteri yengil o ‘rta o g ‘ir c p - 1.0 1.1 1.2 12. T asm aning eni v aniqlanadi, bun d a tasm aning qalinligi b tanlangan b o ‘lishi kerak. e = 7 ^ ] [6-23] A niqlangan qiymat standart b o ‘y ic h a yaxlitlanadi. v, mm ..... 32 40 50 63 71 80 90 100 V, m m .....40 50 63 71 80 90 100 112 bunda: V - s h k iv eni. 13. T asm aning k o ‘ndalang kesim i A, m m ': Download 5.58 Mb. Do'stlaringiz bilan baham: |
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