Acceleration output in dynamic calculations

1

Hello,

I’ve noticed that there is not acceleration output for dynamic calculations. What do you do if you need them? Numerical derivative of displacements/velocities…? Anyone has already addressed the issue?

Regards

2

I have requested an enhancement in github

3

octave (Matlab clone) to obtain accelerations from disp. curve (similar from velocities):

Disp = csvread('transient_disp.txt',1,0);
t=Disp(:,1);
U3=Disp(:,2);
U3=U3*0.001;
V3 = gradient(U3(:)) ./ gradient(t(:));
V3=V3;
A3 = gradient(V3(:)) ./ gradient(t(:));
A3=A3*(1/9.81);
plot(t,U3,'-')
    xlabel('t [s]')
    title('movement Z')
    ylabel('Z [m], Vz [m/s], Az [g]')
    grid on
hold on
plot(t,V3,'-')
plot(t,A3,'-')
 h = legend ("U3","V3", "A3");
 legend (h, "location", "northeastoutside");
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