这是第一步求气缸体积vc,ve的函数:
vclc = 8.000e-06;
vcle = 1.000e-05;
b1 = 3.540e-02;
b2 = 3.540e-02;
crank = 8.500e-03;
dcomp = 5.590e-02;
dexp = 5.590e-02;
% post traitement (geometrie)
acomp = pi*dcomp^2/4.0;
aexp = pi*dexp^2/4.0;
yoke = sqrt(b1^2 + b2^2);
ymax = sqrt((yoke + crank)^2 - b2^2);
ymin = sqrt((yoke - crank)^2 - b2^2);
vswc = acomp*(ymax - ymin); % compression swept volumes [m^3]
vswe = aexp*(ymax - ymin); % expansion swept volumes [m^3]
% partie de fonction volume.m
theta = [0,10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190,200,210,220,230,240,250,260,270,280,290,300,310,320,330,340,350,360];
for i=1:37
sinth(i) = sin(theta(i));
costh(i) = cos(theta(i));
bth(i) = (b1^2 - (crank*costh(i))^2)^0.5;
ye(i) = crank*(sinth(i) + (b2/b1)*costh(i)) + bth(i);
yc(i) = crank*(sinth(i) - (b2/b1)*costh(i)) + bth(i);
ve(i) = vcle + aexp*(ye(i) - ymin);
vc(i) = vclc + acomp*(yc(i) - ymin);
dvc(i) = acomp*crank*(costh(i) + (b2/b1)*sinth(i) + crank*sinth(i)*costh(i)/bth(i));
dve(i) = aexp*crank*(costh(i) - (b2/b1)*sinth(i) + crank*sinth(i)*costh(i)/bth(i));
fprintf('dve= %.8f\n',dve);
fprintf('dvc= %.8f\n',dvc);
fprintf('vc= %.8f\n',vc);
fprintf('ve= %.8f\n',ve);
end
plot(theta,vc)
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