Model 2 unidirectional in-line shaking force – 3 minimize the maximum magnitude of shaking force (approximate) – Model 4 minimize in-line shaking force (approximate) – % shake.m - single cylinder shaking force Notes_08_04 % HJSIII, 13.03.14 clear % constants d2r = pi / 180; % geometry [inches] R = 0.985; L = 4.33; % crank speed [rad/sec] w = 104.719; % masses [lbm] m3B = 0.351; m3C = 0.111; m4 = 0.781; % crank angle th_deg = (0:360)'; th = th_deg * d2r; % piston acceleration [inch/s/s] sdd = -R*w*w*(cos(th) +R*cos(2*th)/L);
Model 2 – unidirectional in-line shaking force 3 – minimize the maximum magnitude of shaking force (approximate) Model 4 – minimize in-line shaking force (approximate) % shake.m - single cylinder shaking force Notes_08_04 % HJSIII, 13.03.14 clear % constants d2r = pi / 180; % geometry [inches] R = 0.985; L = 4.33; % crank speed [rad/sec] w = 104.719; % masses [lbm] m3B = 0.351; m3C = 0.111; m4 = 0.781; % crank angle th_deg = (0:360)'; th = th_deg * d2r; % piston acceleration [inch/s/s] sdd = -R*w*w*(cos(th) +R*cos(2*th)/L);