中原工学院毕业设计说明书
b=1105; c=2400; L=4815; l=2700; ms=1200; me=1990; q=9.8;
F1=3179.65; F2=12451.35; x1=0:5:1010;
M1=-ms*q*(x1.*x1)/L/4; x2=1010:5:2415;
M2=F1*(x2-a)-ms*q*(x2.*x2)/L/4; x3=2415:5:3710;
M3=F1*(x3-a)-ms*q*(x3.*x3)/L/4-me*q*[(x3-2132).*(x3-2132)]/c/4; x4=3710:5:4815;
M4=-(ms/L/4+me/c/4)*q*[(L-x4).*(L-x4)]; x5=0:5:4815; M5=0*x5;
plot(x1,M1,'b-',x2,M2,'b-',x3,M3,'b-',x4,M4,'b-',x5,M5,'k-') xlabel('弯矩图');ylabel('M');
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