clc;明确;关闭;
m1 = 1;m2 = 2;m3 = 3;
c1 = 3;c2 = 1;
k1 = 2;k2 = 2;
f1 = 5;f3 = 2;
(y1 y2 y3) = func (m1, m2, m3, c1, c2, k1, k2, f1、f3)
函数[y1 y2 y3] =
func (m1, m2, m3, c1, c2, k1, k2, f1、f3)
信谊日元(t) y2 (t) y3 (t)
eqn1 = m1 * diff (y1、t、2)= = f1-c1 * (diff (y1, t)选项(y2, t) k1 * (y1 y2);
eqn2 = m2 * diff (y2、t、2)= =往上平移* (diff (y2, t)选项(t)日元)k1 * (y2-y1) c2 * (diff (y2, t)选项(y3, t)) k2 * (y2 y3);
eqn3 = m3 * diff (y3、t、2)= = -f3-c2 * (diff (y3, t)选项(y2, t) k2 * (y3-y2);
y = dsolve (eqn1 eqn2 eqn3);
日元= y.y1;
y2 = y.y2;
y3 = y.y3;
结束