Error using odeset (line 231) Unrecognized property name 'mass_matr​ix_without​_tld'. Error in my_ode_sol​ver_withou​t_tld (line 8) opts = odeset('ma​ss_matrix_​without_tl​d',@(t,y)

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RAJKUMAR SAHA
RAJKUMAR SAHA 2022-3-29
编辑： Torsten 2022-3-29
function Y = mass_matrix_without_tld(t,y)
% Mass matrix function
Y = zeros(2,2);
Y(1,1) = 1;
Y(2,2) = 1;
end
clc;
clear all;
%% To run mass spring damper system
tspan = 0:0.1:20;
y = [0 0];
opts = odeset('mass_matrix_without_tld',@(t,y) mass_matrix_without_tld(t,y));
%% Solve using ode45
[tsol,ysol] = ode45(@(t,y)my_ode_without_tld(t,y), tspan, y, opts);
%% plotting
plot(tsol,ysol(:,1))
xlabel('time(sec)')
ylabel('displacement(m)')
grid on
title('Displacement response of structure')
figure
plot(tsol,ysol(:,2))
xlabel('time(sec)')
ylabel('velocity(m/s)')
grid on
title('Velocity response of structure')

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回答（1 个）

Torsten
Torsten 2022-3-29
编辑：Torsten 2022-3-29
Because the property
'mass_matrix_without_tld'
does not exist for the ODE solvers.
Maybe you mean the existing property
'Mass'
?

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