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            䓲ĵĻʽ䓘Wղ؂

            䓲ĵĻʽ䓘Wղ؂

            䓲ĵĻʽ

            =߅L*߅*0.015

            /op䓹=(⏽-ں*ں*0.02466

            =߅L*4*0.00785=L3.14

            ι=L+*2*ں*0.00785

            =*ں*0.00785

            \=*ں*0.00785*1.06

            =L***0.00785

            y=[*0.0785+0.3]*L*

            =߅*߅x*0.0065

            ˽=߅*߅x*0.0065

            P䓰=L***7.93

            A=0.00617ֱֱL

            =0.00785߅߅L

            =0.0068߅߅L

            ˽=0.0065߅߅L

            ݼy=0.00617ӋֱӋֱL

            =0.00785߅+߅-߅񣩡߅L

            =0.00785ȡ߅L

            䓹=0.02466ں⏽-ں񣩡L

            wweӋ

            ʽ s20.866H/m/k ߅߅0.866߻

            N䓹()Q㹫ʽ

            䓹ܵ=0.25С(⏽ƽ-ȏƽ)LF

            У = 3.14 L=䓹L Fȡ7.8 䓹ܵ=0.253.14(⏽ƽ-ȏƽ)L7.8 * ߴλȡ(M),tӋY鹫(Kg)

            䓵ܶȞ飺7.85g/cm3(ע⣺λQ)

            䓲ՓӋ

            䓲ՓӋӋλ鹫( kg )ʽ飺

            W(kg )=F(e mm2)L(Lm)(ܶg/cm3)1/1000

            N䓲ՓӋ㹫ʽ£

            A Plkg/m

            Ӌ㹫ʽ

            W= 0.006165 dd

            ̖x

            d = ֱmm

            Ӌe

            ֱ100 mm ĈAÿm ÿm = 0.006165 1002=61.65kg

            䓲ĈDƬ


             

            ݼy䓣kg/m

            Ӌ㹫ʽ

            W= 0.00617 dd

            ̖x

            d= ֱmm

            Ӌe

            ֱ12 mm ݼyÿm ÿm =0.00617 12 2=0.89kg

            䓲ĈDƬ


             

            䓣kg/m

            Ӌ㹫ʽ

            W= 0.00785 a a

            ̖x

            a= ߅mm

            Ӌe

            ߅20 mm ķÿm ÿm = 0.00785 202=3.14kg

            䓲ĈDƬ

             

            kg/m

            Ӌ㹫ʽ

            W= 0.00785 b d

            ̖x

            b= ߅mm   d= mm

            Ӌe

            ߅40 mm 5mm ıÿm ÿm = 0.00785 40 5= 1.57kg

            䓲ĈDƬ


             

            kg/m

            Ӌ㹫ʽ

            W= 0.006798 ss

            ̖x

            s= ߅xmm

            Ӌe

            ߅x50 mm ÿm ÿm = 0.006798 502=17kg

            䓲ĈDƬ

             

            ˽ kg/m

            Ӌ㹫ʽ

            W= 0.0065 s s

            ̖x

            s= ߅xmm

            Ӌe

            ߅x80 mm İ˽ÿm ÿm = 0.0065 802=41.62kg

            ߅ kg/m

            Ӌ㹫ʽ

            = 0.00785 [d 2b C d +0.215 R2 C 2r 2 ]

            ̖x

            b=߅ d=߅ R=Ȼ돽 r=˻돽

            Ӌe

            20 mm4mm ߅䓵ÿm ұaƷĿв4mm20 mm߅䓵R3.5r1.2tÿm =0.00785[4220C4+0.2153.52C21.22]=1.15kg

            䓲ĈDƬ

             

            ߅ kg/m

            Ӌ㹫ʽ

            W=0.00785[dB+bCd+0.215R2C2r2]

            ̖x

            B=L߅ b=߅ d=߅ R=Ȼ돽 r=˻돽

            Ӌe

            30mm20mm4mm ߅䓵ÿm ұaƷĿв30204߅䓵R3.5r 1.2tÿm = 0.00785[430+20 C4+0.2153.52C2 1.22]=1.46kg

            䓲ĈDƬ

             

            1 (m) 3.281 Ӣ

            1 Ӣ磽 25.4

            1 0.4536

            1 ˾ 28.3

            1 9.81 ţD

            1 4.45 ţD

            1 =145.161 / Ӣ

            䓵ı(ܶȣ 7.8g/cm

            P䓱أܶȣ7.78g/cm

            \أܶȣ 7.05g/cm

            Xıأܶȣ 2.7g/cm

             

            ׷NͲՓӋ㹫ʽ

            1 䓣ÿ=0.00785(߅+߅߅)߅

            2 ܲģÿ=0.02466ں(⏽ں)

            3 A䓣ÿm=0.00617ֱֱ (ݼy䓺͈Aͬ)

            4 䓣ÿm=0.00786߅߅

            5 䓣ÿm=0.0068߅ֱ߅ֱ

            6 ˽䓣ÿm=0.0065ֱֱ

            7 ߅䓣ÿm=߅߅0.015

            8 䓣ÿm=0.00785ȡ

            9 op䓹ܣÿm=0.02466ں(⏽-ں)

            10늺䓣ÿm=op䓹

            11䓰壺ÿO=7.85

            12S~ܣÿ=0.02670ں(⏽-ں)

            13~ܣÿ=0.02796ں(⏽-ں)

            14Xy壺ÿƽ=2.96

            15ɫܶȣ~8.9 S~8.5 \7.2 U11.37

            16ɫٰĵӋ㹫ʽ飺ÿƽ=ܶȡ

            17: ÿ=(߅L+߅L)20.00785

            18߅ ÿ=0.00785߅(L߅+߅--߅)

            19 ÿ=0.00785[+f(Ȍ-)]

            20䓣 ÿ=0.00785[+e(Ȍ-)]

            ע

            1䓺Ͳ䓵Ĝʴ_Ӌ㹫ʽܷкʽӋֵ

            2fֵһ̖aĞ3.34bĞ2.65cĞ2.26

            3eֵһ̖aĞ3.26bĞ2.44cĞ2.24

            4LȆλ(mm)


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