hello, Can any one tell me if it is possible to develop a simulation of the euler burnolli beam equation using the matlab partial differential equation tool box?? Umar.

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10/21/2010 11:52:04 AM

> hello, > Can any one tell me if it is possible to > sible to develop a simulation of the euler burnolli > beam equation using the matlab partial differential > equation tool box?? > > > Umar. If you can rewrite the equation as a system of second-order PDEs then: probably yes. Best wishes Torsten.

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10/21/2010 8:33:27 AM

On 10/21/2010 4:52 AM, umar wrote: > hello, > Can any one tell me if it is possible to develop a simulation of the euler burnolli beam equation > using the matlab partial differential equation tool box?? > > > Umar. I am sure you can. But isn't it a 4th order ODE? So, you really just need ode45? I did a simulation of this sometime ago, if you like to see it here is a link, the code is there, but in Mathematica. http://demonstrations.wolfram.com/AnalysisOfASingleSpanEulerBernoulliBeamUnderDifferentLoading/ --Nasser

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10/21/2010 5:56:23 PM

Hello All, I have fairly simple program in mathematica that I have been trying to write in Matlab but I have hit a bit of a wall. I much prefer Matlab and could use some help. I basically just solving two coupled differential equations but Matlab is having some trouble. My guess would be that matlab is not precise enough, but I am not sure. lam = 2.8*10^-6; lama = 10*10^-6; Kgs = 750*10^-6; Ksp = 600*10^-6; gam = 0.14; d = (8.7*10^-9)/gam; Co = 0; NN = 50; Na = 3000; DeltaG = 10; kB = 1.38*10^-23; TT = 293; delta= NN*kB*TT/(Kgs*d); A = exp((DeltaG + Kgs*d^2/(2*NN*kB*TT))); fmax=330*10^-12;...

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Hello. I have a multi-domain simulation developed visually using SimMechanics, SimPowerSystems, Stateflow (2007b), etc. Is it possible for Matlab/Simulinks to generate the corresponding differential equations or dynamical systems models automatically? Thanks. ...

--=-=-= Content-Transfer-Encoding: quoted-printable I really rather like the Euler font, which I'm using with \usepackage{ccfonts,eulervm} \usepackage[T1]{fontenc} =20 except for one minor niggle: I think the set membership operator from \in is really big! I realise this is an intentional decision on the part of the person who designed the font, but I was wondering if there was a TeX hack to make it smaller. I understand that one would have to somehow tell TeX to use a smaller font for that symbol, and presumably to reposition it, but my mojo stops at \usepackage and I'm not sure w...

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Hi all, Does an automatic method exist to check if a label of an equation is referred in the text? If yes does an antomatic method exist to remove the tag of an unreferred equations? Thanks nunzio -- ----------------------------------------------------------------- Ing. Nunzio Visciano Dipartimento di Ingegneria dell'Informazione Facolt� di Ingegneria Seconda Universit� degli Studi Di Napoli Via Roma 29 - 81031 Aversa (Ce) Italy Tel. +39 081 5010252 Fax. +39 081 5037042 E-Mail: nunzio.visciano@unina2.it ----------------------------------------------------------------- "Ing....

**** Post for FREE via your newsreader at post.usenet.com **** I'd like to write a short function/program which will find the z value of the normal distribution given P(X>z), e.g. f(0.158655) will give 1. How could I do this? I know that StatPro can do this, but I'm interested in the educational value of knowing how to do this myself. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *** Usenet.com - The #1 Usenet Newsgroup Service on The Planet! *** http://www.usenet.com Unlimited Download - 19 Seperate Servers - 90,000 groups - Uncenso...

Hi, What is the best solver for a large system of linear equations in Matlab, in terms of speed, memory utilization and convergence, and the name of the corresponding function? Thanks Chris chris wrote: > > > Hi, > What is the best solver for a large system of linear equations in > Matlab, in terms of speed, memory utilization and convergence, and > the name of the corresponding function? There is no "best" solver. What is the best way to travel between two arbitrary cities? Consider time of travel, cost, convenience, the existence of mass transit lines, health...

Hi everyone, I have been trying to solve a problem where the aim is to find a Euler path in a graph taking input as the edges. The basic idea is to keep removing cycles from the graph and finding paths in the remaining graph.. but I am not able to implement it. Could anyone tell how to go about implementing/any easier way. Thanks in advance for any help, Bhaskara Aditya bhaskaraaditya@msn.com (Bhaskara Aditya) wrote in news:4aae922e.0401280327.1be8cd4f@posting.google.com: > Hi everyone, > I have been trying to solve a problem where the aim is to find a > Euler path in a graph ta...

Hellow! Anyone can tell me how to solve a linear equation with complex number coeffiency as following (1+i)*x+(2+3i)*y=0; (2+5i)*x+(3+30i)*y=0; I try to use null(A), but it seems not working. Thanks! Mike In article <ef4363d.-1@webcrossing.raydaftYaTP>, Mike <mainstream11@hotmail.com> wrote: > Hellow! > Anyone can tell me how to solve a linear equation with complex number > coeffiency as following > (1+i)*x+(2+3i)*y=0; > (2+5i)*x+(3+30i)*y=0; > > I try to use null(A), but it seems not working. > Thanks! > Mike ------------------- null(A) will only g...

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How to generate the following format for a equation. The symbol '=' are aligned. 'a','+','c','+','e','+' are aligned. fx = aaaaaaaaaaaaaaaaaaaaaaaaaaa + bbbbbbbbbbbbbbbbbb = ccccccccccccccccccccccccccccc + ddddddddddddddddddddd = eeeeeeeeeeeeeeeee + ffffffffffffff thanks -- ZHANG Yan http://www.ntu.edu.sg/home5/pg01308021 "ZHANG Yan" <buaanupt@sina.com> writes: > How to generate the following format for a equation. The symbol '=' are > aligned. 'a','+','c...

I have two equations: 0 = 1000*X1^2*X2^-1+1000*X2^-1-X1*X3*X4 %X3 and X4 are changing parameter 0 = X1^2+1000-X2 and I want to know the solution of X1 and X2, so I write the following codes, f = {'1000*X1^2*X2^-1 + 1000*X2^-1 - X1*X3*X4'; 'X1^2 + 10000 - X2'}; sol = solve(sym(f)); fX1 = matlabFunction(sol.X1(sol.X1~=0)); fX2 = matlabFunction(sol.X2(sol.X2~=0)); [X3,X4] = ndgrid(pvals.X3,pvals.X4); % change the value of X3 and X4 according to pvals X1 = fX1(X3,X4); and matlab returns an error: ??? Undefined function or variable 'I'. Error i...

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im trying to come up with an algorithm to output an euler tour, given an undirected eulerian graph G. Can someone give me of a counter example of a graph for which my algorithm below does not find the tour even though there is one: 1. Do Depth-First Search traversal of G and number the vertices in DFS-preorder 2. Reinitialize all vertices and edges of G as unused. 3. Produce a cycle by: start from vertex with preorder number 1 computed in step 1, and repeatedly go to the vertex with highest preorder number possible along an unused edge. Stop when all edges incident to the current vertex a...

Hi, I'm preparing my thesis and I want to use the Euler font. For the body text I think palatino is a good chose. I have find the following example of font mixture: % Euler for math | Palatino for rm | Helvetica for ss | Courier for tt \renewcommand{\rmdefault}{ppl} % rm \linespread{1.05} % Palatino needs more leading \usepackage[scaled]{helvet} % ss \usepackage{courier} % tt \usepackage{eulervm} % a better implementation of the euler package (not in gwTeX) \normalfont \usepackage[T1]{fontenc} Is it necesary to change font for ss and tt? It is not enough changin the rm with \rene...

i need to make a particle effect like "the star trek beaming" top half of the person should be particles is there a way to morph the mesh in to particles? or any other way is wellcome /svb svb wrote: > > i need to make a particle effect like "the star trek beaming" > top half of the person should be particles > is there a way to morph the mesh in to particles? > or any other way is wellcome > /svb There is probably a plugin that will let you do that - I'd do a search on the www for it, but my ISP is a bit fried right now and I'...

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