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????????????18*1500*6000??q420qd????????????????????

?????????2015/11/10
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????????????18*1500*6000??q420qd????????????????????

????????????????????????????????????????<BR>1?????????????1.95??105MPa???????????????????????????????<BR>??1.96 19.3 19.1??/3=1.93??105MPa?? <BR>2?????????????????μ???????????????<BR>??L=P*L*(1-e-(kx ???))/(kL ???)/Ay/Eg<br><br>?????????????<br><br>???????????????12*2200*9690<BR>16*2200*7430<BR>12*2200*978??

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1?????????????1.95??105MPa???????????????????????????????
??1.96 19.3 19.1??/3=1.93??105MPa??
2?????????????????μ???????????????
??L=P*L*(1-e-(kx ???))/(kL ???)/Ay/Eg

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12*2200*9690
16*2200*7430
12*2200*9780
28*1750*5600
18*2000*8000



????????????18*1500*6000??q420qd????????????????????

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