最小轴向力在不等边角钢孔型设计中的应用

(1),,,R(2),(3)R(4),,,:[1],,,1[J]1,1999,16(2):16-171[2].[M]1:,2000,70-711(,114021):,,,,715/5:;;;:TG332132:B:1003-9996(2003)06-0059-03:2003-05-19:2003-07-05:(1971-),(),,,1613/4715/5,;,,,,,,,2,,,,,(Z)Z,Z,11,ppDNpDFpDNpDZpDY[1]pDN=pDN=pcospDZ=pDNcos=pcoscosFD=hD/cos(RhD)1/2:PDZ=pDZFD=pcoshD(RhD)1/2(1),pCN=pCN=pcos95206200312©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.pCZ=pCNcos=pcoscosFC=hC/cos(RhC)1/2:PCZ=pCZFC=pcoshC(RhC)1/2(2)cos=sin():PZ=PCZ-PDZ=pcoshC(RhC)1/2-psinhD(RhD)1/2(3),;;R;hChD,hC=hDPZ=phCR1/2[(hC)1/2cos-(hD)1/2sin],hC=LCsinhD=LDcosLCLDPZ=pR1/21/2sin2[(hC)1/2LC-(hD)1/2LD]Z,():PZ=pcoshC(RhC)1/2-psinhD(RhD)1/2(4)Z,PZ,,:hC(hC)1/2cos-hD(hD)1/2sin=0:hC=hD,tan2=hC/hD(5):hChD,(LC/LD)2=hD/hC(6)3715/5,75mm50mm6mm:(1),nDnC;(2),,;(3),,,,311120mm120mm,13,6,7,8,912,,19165,11262,1312,,321245,=36+112mm,11013(75+112)11013=77mm,2715/506Vol120No16SteelRollingDec120031©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.175mm50mm6mmK1K2K3K4K5K6K7h/mm5186158101012131317142510h/mm017115212311411716n111211231128113011311143L/mm741107210071110701006814565199/mm2613525120231832616935136/mm2518626133271182912825166/mm191791915718199121484197h/mm5187139161217161721122510h/mm115213311410415318n112511321132113111271118L/mm491104716046145451214316141158/mm1417514100131121317215134/mm2710028109291002716724163/mm51854136310921221161/()90909092100115R/mm81014182436B/mm101137103100101130100110981879719895190(50+112)11013=52mm,518mm77-219=7411mm,52-219=4911mmhD=115mm,hC=017mm,(6),:PZ=0135pR12,5mm,716mm313K2K3,K4K5K6,,K2K3K4,K2:,LD=(01150145)50,18mmRD=(01500175)50,25mmLC=(01150145)75,30mm,RC3917mm518+017=615mm,518+115=713mm,211mm,115mm,K27411-211=72mm,4911-115=4716mm,,,[2](5),,,hD=213mm,hC=115mm,K2K2K3,,42002475mm50mm6mm1280t,9516%,311%,9811%,99125%74170mm,5191mm,49188mm,5172mm,,,,,,,,,,2%,:[1].[M].:,19881[2].[M].:,1992116206200312©1995-2007TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.