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1 Orowan Orowan Orowan Karman Karman ) Nadai Orowan Sims 5) x y.. Karman xy τ xy σ xx σ yy Orowan xy τ xy σ xy τ σ yy s Karman Karman Orowan.. 78

2 (7) ( φ ) d dφ ( φ ) sinφ m R τ cosφ = R p( φ )( sinφ µ cosφ ) = R p m 7 φ ( φ) p( φ) ±,m (7) Karman θ φ hσ xx ( φ ) dx Rd φ Karman Orowan cosθ y R φ p ( φ) τ Rdφ Rdφ ( φ ) ( φ + dφ) h h h x.3. ( φ) p( φ) 79

3 Nadai t s( p) τ θ µ s t = s k a, a (8) φ k µ τ = p φ θ (9) = r φ θ τ t s k µ k σ Mises k 5. σ Tresca k = σ a a a (8)(9) ( φ) p( φ) ( φ) t,τ t τ t Prandtl 80

4 t t ( φ) φ h t ( φ) = tcosθ d φ θ (30) 0 sin (30)(8) t hk sin φ θ φ φ ( φ) = hp a cos θθ d = hp hkϖφ (, a) φ θ ϖφ (, a) a θθ d φ cos sin 0 φ 0 (3) (3) ϖφ, ( a) s θ s = s( φ) = p( ) φ τ τ ( φ) φ h τ ( φ) = ± τsinθ d φ θ (3) 0 sin (3)(9) τ ( φ) φ µ pθ h θ d h p φ φ θ µ =± sin =± (33) 0 sin φ tan φ p φ p( φ) ( φ) ( φ) = ( φ) + ( φ) = h p( φ ) ± µ kϖφ ( a) φ φ t τ tan, (34) 8

5 π a =, ϖφ (, ) = (34)(35) 4 π = t + τ = h p k m (35) 4 φ tan φ ( φ) ( φ) ( φ) ( φ) (3) ϖφ, ( a) φ 30 ϖφ, ( a) a = ϖ a.4. (7)(34)(35) d ( φ) = F( ( φ), φ) (36) dφ Runge-Kutta-Gil (36) φ = φ 0 φ = 0 ( φ) σ b σ = h σ, = h σ ( ) b ( ) φ 0 0 N φ, φ, φ,, φ n ( φ ) n 0 n + n+ N 8

6 ( 0) 3 () ( ) ( 3) n+ n (37) 3 = F = F φn = F φn ( 0) = F( ( φ ), φ ) n n φ φn +, φn + φ φ + + (38), φn φ φ + +, φ + φ φ n () ( 0) ( ) ( ) ( 0) ( ) ( ) ( 3) () ( ) ( ) φ φ = φ i φ i φ = φ i φ i(37)(38) (34)(35) p( φ ) p( φ ) n n (37)(38).5. τ = µ p (3) ϖφ, ( a) Orowan π ϖφ (, a) ϖ( a) a (39) 4 (39)(34) a a = q + q π π 4 ( φ ) hk (40) 83

7 q m µ (4) µ φ tanφ φ n ( φ ) n (40)(4) a (34)(36) a (35)(36) Orowan R HH h h SGBSGFσ b σ kgmm - NKM k XK(I)RK0(I) x k kgmm - NUM µ XU(I)U0(I) x µ SUBROUTINE PRINT X x Oφ deg.os SL/ST NSST F ( φ) kgmm - P p( φ) kgmm - PM P/K p( φ ) PMK k SGXσ xx kgmm - SGX/K σ xx k SGXK TAUτ kgmm - 84

8 H h mm U µ RK k kgmm - p( ) A a = µ φ k W ϖφ, ( a) SUBROUTINE PRINT RRS XLmm OMdeg.OMS XN x (mm) ONdeg. FP ( φ) p( φ) PMkgmm -, CC Pkgmm - SUMP Gtonmm - SUMG A:mmTAM ( φ) p( φ), (7)(34)(37) 83(37) 8500(7)(35)(37) 99(37)

9 79 ( φ) p( φ), OROSLPFNSLIP(34) 63300OROSTKFNSTIK(34) 3038FRICTN 39335DEFOM 33635PRINT 3540SERCH

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17 mm h = 4. 5mm h mm = 95. ( ) µ = 03. σ = σ = 00. 7) Orowan Karman Orowan b Normalized rolling pressure p/σ 0 h =4.0mm, h =9.5mm, µ =0.3, σ b =σ = Orowan's theory D RPFEM (CORMILL) Rolling direction Distance rom exit x /mm 94

18 4) 7) Window or nodal values View or load characteristics and reduction View or cross section o workpiece Shohet 95

19 8) 5) 4.. ) ) 3) 4) 5) 6) 7) ))5) )5) 4.. )4) m 96

20 z j p( j) q( j) Y B () i ( i) Y W J Y BW K R CW () i ( i) K [ mm /( kg / mm) ] K = p( j) L R CB Y B () i z l B D B i Y W () i j q( j) m d B D W d W p( j) l W J 97

21 m q m ( j) z = p( j) j= j= z + J (4) () i q YB () i YW () i + YBW + = RCW + K () i R () i CB (43) j i α ( i j) α ( i j) W, B, Y W m () i + α ( i, j) q( j) z = α ( i, j) p( j) j= W m j= W z (44) m () i ( i, j) q( j) z = 0 YB α B (45) j= α( i, j) j i α 3 3 l l 3 3 ( i, j) = ( + ν ) + ( β l) + + ( 3ηβL l βη β ) 3πE d D d D (46) j i α 3 3 l l 3 3 ( i, j) = ( + ν ) + ( η l) + + ( 3ηβL l β η η ) 3πE d D d D (47) L L 5 = 5 (46)(47) η ( j 0. ) z β ( i 0. ) z α ( i j) ( i j) W, α (4)(45)3 m + B, q( j) 98

22 Y B () i ( i) Y W 3 m + Y BW p( j) 4.3. p 9) u y ( x z) p( ϕ, ψ ) ( x ϕ ) + ( z ψ ) ν, = dϕdψ (48) πe S p S u y (48) 0) Hitchcock R R p 99

23 * C * R p R h h = + (49) ( ν * 6 ) C = p * πe 4.4. ) ) L i L () i () i h () i L h = L (50) h () i (50) h T σ () i h () i z = T = h () i z σ σ i i (5) 00

24 0 0 Slit i L ( i) σ σ L () i σ σ E ε () i = (5) E 0

25 () i L ( i) L = () i L () i E L L L L h ε () i = ln ln = ln = () (53) L L L i L h E (5)(53) ε ( i) ( i) () i h σ () i = E + σ h (54) L ( ) ( ) σ i σ h (50) L h = L () i h () i = Lh (53)h (54)(5) h () i = i h h () i z 0 (55) [ h () i ] z i h = (56) h z i () i ( i) h z σ (57) i σ () i = E h () i + [ h () i ] z i 0

26 Karman(4)Orowan(36) (4)(45)(49) h () i (57) σ ( i) σ () i b h () i (57) KarmanOrowan ε t ε l ε t = ε l ξ ξ ε l = (58) ε t ξ 5) ) 75 ) 03

27 ) Karman, T.: Z. Math. Mech., 5(95), 39. ) Nadai, A.: J. Appl. Mech., 6(939), A54. 3) Bland, D.A. and Ford, H.: Proc. Inst. Mech. Engr., 59(948), 44. 4) Orowan, E.: Proc. Inst. Mech. Engr., 50(943), 40. 5) Sims, R.B.: Proc. Inst. Mech. Engr., 68(954), 9. 6) 36(970), 6. 7) (99), ) Yanagimoto, J., Karhausen, K., Brand, A.J. and Kopp, R.: Trans. ASME, J. Manuact. Sci. and Eng., 0-(998), 36. 9) Yanagimoto, J. and Liu, J.: ISIJ International, 39-(999), 7. 0) Yanagimoto, J., Ito, T. and Liu, J.: ISIJ International, 40-(000), 65. ) 4-344(975), 30. ) (999), ) (993), 34. 4) 7-78(96), ) 3-63(98), 8. 6) (997),. 7) 8(967), 44. 8) Shohet, K.N. and Townsend, N.A.: J. Iron and Steel Inst., 06-(968), ) -08(970), 9. 0) 4 (973), 9. ) 993 (983),. ) (984),. 04

φ s i = m j=1 f x j ξ j s i (1)? φ i = φ s i f j = f x j x ji = ξ j s i (1) φ 1 φ 2. φ n = m j=1 f jx j1 m j=1 f jx j2. m

φ s i = m j=1 f x j ξ j s i (1)? φ i = φ s i f j = f x j x ji = ξ j s i (1) φ 1 φ 2. φ n = m j=1 f jx j1 m j=1 f jx j2. m 2009 10 6 23 7.5 7.5.1 7.2.5 φ s i m j1 x j ξ j s i (1)? φ i φ s i f j x j x ji ξ j s i (1) φ 1 φ 2. φ n m j1 f jx j1 m j1 f jx j2. m j1 f jx jn x 11 x 21 x m1 x 12 x 22 x m2...... m j1 x j1f j m j1 x

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微分積分 サンプルページ この本の定価 判型などは, 以下の URL からご覧いただけます.   このサンプルページの内容は, 初版 1 刷発行時のものです. 微分積分 サンプルページ この本の定価 判型などは, 以下の URL からご覧いただけます. ttp://www.morikita.co.jp/books/mid/00571 このサンプルページの内容は, 初版 1 刷発行時のものです. i ii 014 10 iii [note] 1 3 iv 4 5 3 6 4 x 0 sin x x 1 5 6 z = f(x, y) 1 y = f(x)

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