Znn3bq.jpeg
²é¿´: 1966  |  »Ø¸´: 8

ÊÇ×îºó

гæ (³õÈëÎÄ̳)

[ÇóÖú] ¶àÔª·ÇÏßÐÔ·½³Ì×éÇó½â£¬¼±Çó ÒÑÓÐ1È˲ÎÓë

Õâ¸ö4Ôª·ÇÏßÐÔ·½³Ì×éÔõô½â°¡£¿¼±Çó¸÷λ´óÉñ
function f=fun(x0)
syms x1 x2 x3 x4
x0=[x1 x2 x3 x4];

fi=0.515;
fe=0.53;      
B=fi+fe-1;   
d=pi/180;  
a0=45*d;         
Db=7.144;      
Dm=40;         
n=1200;        
L=Db/Dm;        
Z=atan(10/(pi*40));   
p=7.801e-6;     
E1=2.07e5;      
E2=1.9e5;     
u1=0.29;   
u2=0.305;
Ro=17.15;   
Ri=24.294;  
ro=3.872;  
ri=3.872;  




g=x2/sin(x4)+x1/sin(x3);
A1=B*Db*sin(a0)+g;
A2=B*Db*cos(a0);
w1=sin(x3)*(0.03*Db+x1);
w2=A2-cos(x4)*(0.015*Db+x2);

v=atan(sin(x3)/(L+cos(x3)));   
Wm=2*pi*n/(1+(1+L*cos(x3))*(cos(x4)+tan(v)*sin(x4))/((1-L*cos(x4))*(cos(x3)+tan(v)*sin(x3))));
Wr=-Wm*(1+L*cos(x3))*cos(Z)/(L*(sin(v)*sin(x3)+cos(v)*cos(x3)));

Fc=(pi/12)*p*(Db^3)*Dm*(Wm^2);     
Mg=(1/60)*p*pi*(Db^5)*Wm*Wr*sin(v);      

Ps11=2/Db;
Ps12=2/Db;
Pn11=2/Db;
Pn12=2/Db;
Ps21=1/Ro;   
Pn21=-1/Ri;  

Ps22=-ro;      
Pn22=-ri;      
S1=Ps11+Ps12+Ps21+Ps22;
S2=Pn11+Pn12+Pn21+Pn22;

Rs1=Ps11*Ps21/(Ps11+Ps21);
Rs2=Ps12*Ps22/(Ps12+Ps22);
Rn1=Pn11*Pn21/(Pn11+Pn21);
Rn2=Pn12*Pn22/(Pn12+Pn22);

K1=1.0339*(Rs2/Rs1)^0.636;
K2=1.0339*(Rn2/Rn1)^0.636;
Ke1=1.5277+0.6023*log(Rs2/Rs1);
Ke2=1.5277+0.6023*log(Rn2/Rn1);
Ee1=1.0003+0.5968*(Rs1/Rs2);
Ee2=1.0003+0.5968*(Rn1/Rn2);

e1=(1-1/(K1^2))^0.5;
e2=(1-1/(K2^2))^0.5;

y1=(2*Ke1/pi)*((1-(e1)^2)*pi/(2*Ee1))^(1/3);
y2=(2*Ke2/pi)*((1-(e2)^2)*pi/(2*Ee2))^(1/3);

E=0.5*((1-u1^2)/E1+(1-u2^2)/E2);  
Q1=(8*(x1/y2)^3/((1.5*E)^2*S2))^0.5;
Q2=(8*(x2/y1)^3/((1.5*E)^2*S1))^0.5;

f1=(A1-w1)^2+(A2-w2)^2-(0.015*Db+x4)^2;
f2=w1^2+w2^2-(0.03*Db+x3);
f3=Q2*sin(x4)-Q1*sin(x3)-Mg/Db*(cos(x4)-cos(x3));
f4=Q2*cos(x4)-Q1*cos(x3)+Mg/Db*(sin(x4)-sin(x3))+Fc;

f=[f1; f2; f3 ;f4];

% format long;
% f=vpa(f,2);
% class(f);
end
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¶À¹ÂÉñÓî

°æÖ÷ (ÖªÃû×÷¼Ò)

ÊýÖµ¼ÆËã
2Â¥2019-08-11 15:05:19
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÊÇ×îºó

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by ¶À¹ÂÉñÓî at 2019-08-11 15:05:19
Ö±½ÓÓÃfsolveº¯Êý

fsolve£¬Çó½âµÄ²»ÊÇ×Ô¼ºÏëÒªµÄ£¬¸ú³õʼֵÉèÖÃÊýÖµ²î²»¶à£¬ÇëÎÊÓÐûÓоßÌåµÄ½â·¨¿ÉÒÔÇó
3Â¥2019-08-11 15:42:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¶À¹ÂÉñÓî

°æÖ÷ (ÖªÃû×÷¼Ò)

ÒýÓûØÌû:
3Â¥: Originally posted by ÊÇ×îºó at 2019-08-11 15:42:26
fsolve£¬Çó½âµÄ²»ÊÇ×Ô¼ºÏëÒªµÄ£¬¸ú³õʼֵÉèÖÃÊýÖµ²î²»¶à£¬ÇëÎÊÓÐûÓоßÌåµÄ½â·¨¿ÉÒÔÇó...

»»³õʼֵ¼ÆËã¡£
ÊýÖµ¼ÆËã
4Â¥2019-08-11 15:56:56
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÊÇ×îºó

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
4Â¥: Originally posted by ¶À¹ÂÉñÓî at 2019-08-11 15:56:56
»»³õʼֵ¼ÆËã¡£...

No solution found.

fsolve stopped because the relative size of the current step is less than the
default value of the step size tolerance squared, but the vector of function values
is not near zero as measured by the default value of the function tolerance.

<stopping criteria details>


x1 =

  0.264988629986718 - 0.227162298915769i  0.157276044576307 - 0.503604785301162i 53.759850087022613 - 0.866858320147245i 34.658568519774903 + 0.590132528775326i


µÃ³öµÄÊÇÕâ¸ö£¬Õâ²»ËãÇó³ö½â°¡
5Â¥2019-08-11 16:51:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¶À¹ÂÉñÓî

°æÖ÷ (ÖªÃû×÷¼Ò)

³õʼֵÉèÖò»¶Ô£¬¶àÊÔ¼¸´ÎÆäËûµÄÖµ

·¢×ÔСľ³æAndroid¿Í»§¶Ë
ÊýÖµ¼ÆËã
6Â¥2019-08-11 19:05:08
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
¶À¹ÂÉñÓî: ½ð±Ò+2, ¹ÄÀø½»Á÷ 2019-08-11 22:12:35
¹«Ê½ÓÐÎÊÌâ°É£º
rs1 = 0.0482578901650419
rs2 = 0.301774232969708
rn1 = -0.048257890165042
rn2 = 0.301774232969708

Ke2=1.5277+0.6023*log(Rn2/Rn1)

ÉÏʽÖÐRn2/Rn1Ϊ¸ºÊý£¬ÔÙÈ¡¶ÔÊý£¿ÄܼÆËãÂð£¿
7Â¥2019-08-11 21:43:49
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

southpark007

½û³æ (ÖøÃûдÊÖ)

±¾ÌûÄÚÈݱ»ÆÁ±Î

8Â¥2019-08-11 22:58:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

dingd

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¹«Ê½Âß¼­´íÎó£¬ÄÜ·ñÇó½âºÍÈí¼þÎÞ¹ØÁË¡£
9Â¥2019-08-12 09:58:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ÊÇ×îºó µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 284Çóµ÷¼Á +20 ÈÃÎÒÉϰ¶°É°¢Î÷ 2026-04-09 20/1000 2026-04-15 14:40 by ºÚ¿Æ¼¼»¨¸ÚÑÒ
[¿¼ÑÐ] 327Çóµ÷¼Á +23 Xxjc1107. 2026-04-13 25/1250 2026-04-14 18:48 by åÐÒ£ÈýÀÉ
[¿¼ÑÐ] 366Çóµ÷¼Á +11 ²»ÖªÃûµÄСئ 2026-04-11 11/550 2026-04-14 15:50 by zs92450
[¿¼ÑÐ] ¿¼ÑÐÇóµ÷¼Á +6 ban°àСÆß 2026-04-11 6/300 2026-04-14 14:06 by ¶ßÀ²AÃÎÖ»ÊǸöÃÎ
[¿¼ÑÐ] »úе¹¤³Ì313·ÖÕÒ¹¤¿Æµ÷¼Á +4 ˫һÁ÷±¾¿Æ»úе 2026-04-08 4/200 2026-04-14 07:32 by Abskk
[¿¼ÑÐ] Çóµ÷¼Á +12 Á§ÜÔÒ»¶¨Éϰ¶ 2026-04-10 13/650 2026-04-14 00:08 by Equinoxhua
[¿¼ÑÐ] 302Çóµ÷¼Á +10 Ò×£¡? 2026-04-13 10/500 2026-04-13 19:04 by lbsjt
[¿¼ÑÐ] Ò»Ö¾Ô¸ÏôóÉúÎïѧ332Çóµ÷¼Á +11 ³Ø³Ø³Ø³Ø³Ø³Ø 2026-04-08 11/550 2026-04-13 14:10 by ¿ÆÑÐÂÛ
[¿¼ÑÐ] 339Çóµ÷¼Á +8 hanwudada 2026-04-11 9/450 2026-04-12 15:36 by laoshidan
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷±±¹¤Òµ´óѧ289 085602 +33 yangæÃ 2026-04-10 34/1700 2026-04-12 08:11 by Art1977
[¿¼ÑÐ] ±¾ÈËÅ®º¢ +7 ºðºð£¬ 2026-04-10 9/450 2026-04-11 14:45 by ACS Nano¡ª¡ª
[¿¼ÑÐ] 085410-273Çóµ÷¼Á +6 X1999 2026-04-10 6/300 2026-04-11 10:32 by Delta2012
[¿¼ÑÐ] ¹ã¶«Ê¡ 085601 329·ÖÇóµ÷¼Á +14 Eddieddd 2026-04-10 14/700 2026-04-11 09:58 by bljnqdcc
[¿¼ÑÐ] 282£¬Çóµ÷¼Á +12 jggshjkkm 2026-04-09 14/700 2026-04-11 09:39 by Öí»á·É
[¿¼ÑÐ] 337Çóµ÷¼Á +4 ÑÐs. 2026-04-10 4/200 2026-04-11 08:57 by zhq0425
[¿¼ÑÐ] ±¾¿Æ211 ¹¤¿Æ085400 280·ÖÇóµ÷¼Á ¿É¿çרҵ +11 LZH£¨µÈ´ýµ÷¼ÁÖÐ 2026-04-10 11/550 2026-04-11 08:39 by zhq0425
[¿¼ÑÐ] 342µç×ÓÐÅϢר˶Çóµ÷¼Á +9 ÄãÈÃÎÒÔõôÀóÖ¦ 2026-04-10 10/500 2026-04-11 08:33 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸»¦9£¬326ÉúÎïѧÇóÏà¹Ø×¨Òµµ÷¼Á +4 Áõīī 2026-04-09 4/200 2026-04-10 12:07 by pengliang8036
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +28 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 28/1400 2026-04-09 20:08 by µ¹Êý321?
[¿¼ÑÐ] 348Çóµ÷¼Á +3 candyyyi 2026-04-09 3/150 2026-04-09 17:20 by ¶ÎΰÑÞ
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û