Recent content by amodiitm

Hi I am little confused about how to implement the x=[u;u']; x'=[u';u'']; thing in actual code. If I can solve two 2nd order differential equation in matrix form then I think I can write for the 202x202 matrix too. But I could not write the exact code... ( Hence I am not...

sorry for sounding vague , actually excerpts from my code that i pasted in previous post, I suppose is based on the same principle that u suggested but i could not go ahead with it,as in there was problem in implementing it. I could not completely write the code itself..therefore i asked for...

though the system may have initial velocity of zero, but there will be displacement of the nodes due to the exciting force that is on the right side of the equation which is a function of time which will cause displacement of the nodes with every passing time. I am interested in finding out the...

hello, Thanks for your reply,but I tried the same yesterday which did not yield any result, I will paste here the code Fo=@ (t,i) F(i).*sin((2*pi()/T)*t); Fo(1,2) tspan=[0:100]; u0=zeros(202,1); dudt0=zeros(202,1); y0=[u0;dudt0]; [t,y]=ode45(@f,tspan,y0); could you please give...

Hi every one ! I am a final year Engineering student of IIT Madras, India. I am doing a project(finite element analysis of a structure) which requires the solution of a system of second order differential equations. equation looks like below: [M][U"]+K[U]=[F(t)] M : Mass Matrix of size...