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haohaoxuexi1


Last seen: en dag ago Active since 2021

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Bifurcation diagram of friction induced vibration system
Anyone has idea how to plot the bifurcation diagram of the above 2dof friction induced vibration system? Or have any genera...

ungefär en månad ago | 0 answers | 0

0

answers

Question


cumsum function question for integration
The code is below. close all; clear all; clc; format long; syms t; inter_val = 0.0001; tn=0:inter_val:20; t=tn; y_c...

2 månader ago | 2 answers | 0

2

answers

Question


How to change the font size of xtick and ytick with scientific notation on the side?
xticklabel_fs = get(gca,'XTickLabel'); set(gca, 'XTickLabel', xticklabel_fs, 'FontName', 'Times New Roman', 'fontsize', 12); y...

4 månader ago | 2 answers | 0

2

answers

Question


ode45 and rungekutta yield different result
I am using ode45 and rungekutta script to solve some piecewise differential equations. But the result is a bit different. Can a...

5 månader ago | 2 answers | 0

2

answers

Question


Can anyone help to see what is wrong with this function to solve a DAE problem
dx(1)=x(2); dx(2)=k1*(x(3)-x(1))-(knl_1*x(1)+knl_3*x(1)^3); dx(3)=x(4); dx(4)=(-c*x(4)-k1*(x(3)-x(1))+kAmp*cos(w*t)+theta_p*x...

11 månader ago | 0 answers | 0

0

answers

Question


Frequency sweep for DAE question
%% close all; clear all; clc; format long; k1=25000; knl_1=300; knl_3=2000000; m=0.1; c=1; w0=20; kAmp = 0.5; ...

ungefär ett år ago | 0 answers | 0

0

answers

Question


ODE45/ODE15 inquiry about nonlinear spring
Is there anyone can help me on how to get an ODE45/ODE15 program to solve the above equation? I want to get the value of y1 and...

ungefär ett år ago | 2 answers | 0

2

answers

Question


How to input a "sym" type equation into ODE45 to solve first order differential equation?
% Sample close all; clear all; clc; syms t tt; a=1; b=2; c=3; fs_d=50*t^2+60*t^4+70*t^9; fd_d=diff(fs_d,t); dT...

ungefär ett år ago | 1 answer | 0

1

answer

Question


How to check the symbolic engine of matlab2018?
I have intalled maple (maple toolbox as well) in my computer. And I am trying to switch the engine between in order to get bette...

mer än ett år ago | 1 answer | 0

1

answer