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clear
4 D4 ^! r; X* s0 ~/ E1 isyms thetal1 thetal6 thetal4 thetal5 thetal8 s r
: j; G& y8 U0 T- O& R3 dthetal1set=[90:1:120];
% A6 Z- p: n: X" k3 [thetal2=348;
, a7 q& c1 J5 T6 Sthetal3=12;
% L% i! p: u9 V4 P( X8 y- W- Fthetal8=12;+ K C) [" \' d
thetal6=zeros(size(thetal1set));% v" C+ p4 [) ~- h& R @% G
thetal4=zeros(size(thetal1set));
' [8 @3 n2 S8 J: F$ L7 ~thetal5=zeros(size(thetal1set));% g8 I( ]- I( V8 r1 Z
thetal8=zeros(size(thetal1set));9 I: j" g. ^3 i2 y+ e
s=zeros(size(thetal1set));1 C$ |$ @# i8 U- F0 ^: Q
r=zeros(size(thetal1set));) R" i1 k' m, c Y# y! R0 l
a=0.55;6 s: u4 j* _& T2 C$ q; F/ k
b=0.89;% J0 X3 a; f; `8 J! p+ w
l1=0.19;
# H9 t- R% A0 H& L! |& v! \l2=0.38;) M( b6 i2 J4 X" r7 Y- Z/ B
l4=1.007;
' Z8 V8 z3 r3 Bl5=0.15;
G) n) k* Z2 r# J+ \4 z0 Kl7=0.45;
8 v+ `7 L& k2 Y# }l8=0.22;( q3 N4 B* |' m" Q% n2 K' M
l9=0.18;
# C4 C5 l- e5 P% J' A& ~/ ef2=2034/4*cos(12*2*pi/360)*0.4*2;) C! R- B- Z3 w% y' ]- E
for i=1:1:numel(thetal1set)
- |, Q. E1 N# q& q; S$ V" i thetal1=thetal1set(i);
% B; N C# k. {+ |3 m9 \ eq1=l4.*cos(thetal6*2*pi/360)+l1.*cos(thetal1*2*pi/360)==l5.*cos(thetal4*2*pi/360)+s.*cos(thetal3*2*pi/360);0 I R, Z! ]" [; t1 V0 U6 q* z' _
eq2=l4.*sin(thetal6*2*pi/360)+l1.*sin(thetal1*2*pi/360)==l5.*sin(thetal4*2*pi/360)+s.*sin(thetal3*2*pi/360)-l8;1 [% R7 g) ]& S2 H% \& N: I, H3 V
eq3=l7.*cos(thetal4*2*pi/360)+l9.*cos(thetal5*2*pi/360)+s.*cos(thetal3*2*pi/360)==b;
; |$ [! V7 J- D5 R5 f eq4=l7.*sin(thetal4*2*pi/360)+l9.*sin(thetal5*2*pi/360)+s.*sin(thetal3*2*pi/360)==l8+a;
. D$ V9 B, l4 M4 {* h" T' {' r eq5=l4.*cos(thetal6*2*pi/360)+l5.*cos(thetal4*2*pi/360+pi)+l1.*cos(thetal1*2*pi/360)==r.*cos(thetal8*2*pi/360);
6 {: p. j/ I0 a$ f: F% w eq6=l4.*sin(thetal6*2*pi/360)+l5.*sin(thetal4*2*pi/360+pi)+l1.*sin(thetal1*2*pi/360)==r.*sin(thetal8*2*pi/360);
& `7 W- Q$ b9 Y/ X2 P- Q sol=vpasolve([eq1,eq2,eq3,eq4,eq5,eq6],[thetal6,thetal4,thetal5,thetal8,s,r])
3 x) R, y) p8 }- o9 c4 L thetal6(i)=double(sol.thetal6);: k/ n2 B) d( ]! w/ E
thetal4(i)=double(sol.thetal4);) ~1 e% S) c; L6 p: a
thetal5(i)=double(sol.thetal5);
; h. F! B2 d& [, \ W' B4 p0 r thetal8(i)=double(sol.thetal8);' B2 o; [6 @- {8 Q1 @2 t6 `
s(i)=double(sol.s);7 i* q4 p- N$ s. I7 c! ~% A
r(i)=double(sol.r);
~9 L8 E' {& D t=sqrt(l1^2+r^2-2*l1*r*cos(thetal1*2*pi/360+thetal8*2*pi/360));
& d6 ~ R5 _8 R0 Y# [ thetal7=acos((l4^2+t^2-l5^2)/(2*l4*t))+acos((l1^2+t^2-r^2)/(2*l1*t)); & h0 t+ y% f0 f7 f+ W- Z1 V# n
F1=f2*l7*sin(thetal4*2*pi/360-thetal3*2*pi/360)/((l5*sin(pi-acos((l4^2+l5^2-t^2)/(2*l4*l5)))));
* w$ d r: c6 U F=F1*l1*sin(thetal7)/(l2*sin(pi-thetal1*2*pi/360));) a) a: r0 x9 v0 t8 ?1 G
end
0 V' {5 \1 F7 g* l4 N- uplot(thetal1,F)
+ P& T% G3 g( j5 w; y+ k% lxlabel('角度/。');( W: i3 ?5 P( A* s6 l
ylabel('缓解力/N');' s0 a7 J# u4 ^2 i
hold on9 t6 J i- d5 ?* w
grid on* x( O9 B4 {* K' N2 I
6 J& n6 N6 B) h4 n& f
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发表于 2022-3-23 10:54
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