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Hossein


TU Braunschweig

Last seen: oltre 4 anni fa |  Attivo dal 2014

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Domanda


Numerical integral with syms variables
Hi everybody, I am trying to make numerical integral from a function which consists of several symbolic. It's clear that I want...

circa 5 anni fa | 1 risposta | 0

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risposta

Domanda


writing a matrix in a .xml data
Hi, I am trying to import a pressure profile from my calculations in Matlab to Ansys. The problem begins to appear when I need ...

circa 7 anni fa | 1 risposta | 0

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Domanda


Symbolic matrix problem, how to take out the arrays of a symbolic matrix?
Hi, I have a matrix 5X1 as a Symfun data, where I want to take out the 5 elements seperately and do more calculations on them...

oltre 7 anni fa | 1 risposta | 0

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Domanda


Problem adding two symbolic functions
Hi, I have a problem adding two fuctions with deriatives of symbolic variables. The main purpose ist to solve a differential eq...

oltre 7 anni fa | 2 risposte | 0

2

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Domanda


Calculating the length of a curve
Hi everyone, can anybody tell me how to calculate the length of a curve being defined in polar coordinate system using follow...

quasi 8 anni fa | 0 risposte | 0

0

risposte

Domanda


Out of memory problem using ODE solver
Hi everyone, I have the problem of out of memory in a time domain stiff simulation using ODE15s. What I have tried to solve t...

quasi 9 anni fa | 1 risposta | 0

1

risposta

Domanda


Time normalization in FFT!
Hi everyone, I'm trying to take a FFt from a time signal being resulted from an ODE procedure for simulating an imbalance res...

quasi 9 anni fa | 1 risposta | 0

1

risposta

Domanda


FFT from a time signal with unequal time increment
Hi everyone, I am trying to take a FFT from a simulated time signal, which is resulted from an ODE simulation. The problem is t...

quasi 9 anni fa | 1 risposta | 0

1

risposta

Domanda


3D Plot from finite 2D Plots in each section!
Hi everyone, I am searching for a solution to create a 3D plot to show the whole distribution of load over a cylinder using fin...

circa 9 anni fa | 1 risposta | 0

1

risposta

Domanda


Generating a results report possible?
Hi everyone, is there any comfortable solution to print different results as a combination of different figures and tables in...

oltre 9 anni fa | 1 risposta | 0

1

risposta

Domanda


Matlab command history question
Hi everyone, is there any way to recall a command of a long time ago fast and without searching back day by day or is there a...

oltre 9 anni fa | 3 risposte | 1

3

risposte

Domanda


Is there any way to calculate the eigenvalues of Jacobian matrix in any non-stiff ODE solver like ode113?
Hi everybody, Is there any way to calculate the eigenvalues of Jacobian matrix in any non-stiff ODE solver like ode113? ma...

oltre 9 anni fa | 1 risposta | 0

1

risposta

Domanda


a well-known problem: Out of Memory during the ode process!
Hi everyone, I'm trying to run a model using ode113 with 5252 state variables, the solver works pretty well in predefined tim...

oltre 9 anni fa | 1 risposta | 0

1

risposta

Domanda


Update the variables in ODE routines?
Hi everyone, I have a question concerning the ODE routines. I should model a complicated nonlinear dynamic system in time dom...

oltre 9 anni fa | 1 risposta | 0

1

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Domanda


solving a ODE using ode45 or etc. with certain number of timestepping
Hi everybody, I want to solve an ODE using Adams-Bashforth 4th order method which needs the initial values of previous steps ...

oltre 9 anni fa | 2 risposte | 0

2

risposte

Domanda


best way to access past outputs within a function written for ode routines (like ode45)?
Hi everyone, any suggestion to save past valid outputs within a function written for ode routines considering this fact that od...

oltre 9 anni fa | 0 risposte | 0

0

risposte

Domanda


Adaptive time stepping for Adam Bashforth methode
Hi everyone, can anybody give me a suggestion for coding a alghorithm with the aim of optimal time stepping while using Adam ...

oltre 9 anni fa | 1 risposta | 0

1

risposta

Domanda


problem using ODE functions during simulation a nonlinear motion! please help!
Hi Everybody, I am trying to simulate the equation of motion for a rotor-bearing system in time-domain. the quations to solve...

oltre 9 anni fa | 0 risposte | 0

0

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Risposto
finding the roots of a nonlinear equation....faster method than the Newton-Raphson method?
u've right buddy seems there is no main solution but I'm thinking of a trick or something like that. The things that I know are ...

quasi 10 anni fa | 0

Domanda


finding the roots of a nonlinear equation....faster method than the Newton-Raphson method?
Hi everyone, I was wondering if there is any other way to find the roots of a nonlinear equation numerically which can be fas...

quasi 10 anni fa | 2 risposte | 0

2

risposte

Domanda


Simulink Error: LINK1248: image size exceeds maximum allowable size, what should be done?
Hi everyone, I should build a matrix with the size of 4851 X 4851 in my simulink model which needs much more memory size and ...

oltre 10 anni fa | 0 risposte | 0

0

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Domanda


same models in MATLAB and Simulink but different results! what would you do in this case?
Hi everyone, I am building a model in simulink which I have done it in MATLAB before. In one specific part of the model a PDE...

oltre 10 anni fa | 0 risposte | 0

0

risposte

Domanda


Switch problem in Simulink!
Hi everybody, I work with a Simulink model describing the behaviour of some kind of mechanical bearing. In latest step I'm us...

oltre 10 anni fa | 0 risposte | 0

0

risposte

Domanda


Different results from Matlab and Simulink from a same Iteration process
Hi eveyone, I'm trying to solve a PDE in Simulink which is already done by me in MATLAB code through the double-iteration for...

oltre 10 anni fa | 0 risposte | 0

0

risposte

Domanda


how to define iteration region by simulink?
Hi every body, I'm trying to rebuild a modell in Simulink which is already done as a MATLAB code. In a specific part of this ...

oltre 10 anni fa | 0 risposte | 0

0

risposte

Domanda


Fix point tool runing error by Simulink
Hi everyone, I have a Simulinik model that uses Cos block (a fix point tool). Previously it runs fine but it can't run anymor...

oltre 10 anni fa | 1 risposta | 0

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Risposto
Help Help Help...Problem with Matlab-Function Block in Simulink!
im still having the problem...any idea?

oltre 10 anni fa | 0

Domanda


Help Help Help...Problem with Matlab-Function Block in Simulink!
Hi everyone, im having trouble while using the Matlab fcn block in my Simulink model, recieving the Error: CRL: "ANSI_C" ca...

oltre 10 anni fa | 2 risposte | 0

2

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Risposto
Help Help Help...Problem with Matlab-Function Block in Simulink!
my Mex properties: Name: 'Microsoft Windows SDK 7.1 (C)' Manufacturer: 'Microsoft' Language: 'C' V...

oltre 10 anni fa | 0

Domanda


iteration in Simulink for solving Reynolds equation
Hi everybody, i have already written a code for modelling some kind of bearing in MATLAB and now i want to re-build it in sim...

oltre 10 anni fa | 0 risposte | 0

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