???????????????????
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??????????г????????????????????????????????????????????????????????????л?????????????????????????硢?????????????????????
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5??1800??8000 32??
8??1800??8000 90??
8??2000??8000 70??
8??2000??8000 32??
10??1800??8000 70??
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?й????е?????????
1.????????s??
???????????????????????????????????????????????????????????????????????????????Σ????????????????????????????????С?????????????
??Ps???????s??????????Fo?????????????????????s =Ps/Fo(MPa)??MPa???????????N??????/mm2????MPa=106Pa??Pa???????=N/m2??
3??6????????????24*1600*C??q550qe???????????????????г???????????λ???
