Hossein

TU Braunschweig

Last seen: etwa 4 Jahre vor | Aktiv seit 2014

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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...

mehr als 4 Jahre vor | 1 Antwort | 0

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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 ...

mehr als 6 Jahre vor | 1 Antwort | 0

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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...

etwa 7 Jahre vor | 1 Antwort | 0

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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...

etwa 7 Jahre vor | 2 Antworten | 0

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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...

mehr als 7 Jahre vor | 0 Antworten | 0

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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...

etwa 8 Jahre vor | 1 Antwort | 0

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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...

etwa 8 Jahre vor | 1 Antwort | 0

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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...

etwa 8 Jahre vor | 1 Antwort | 0

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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...

mehr als 8 Jahre vor | 1 Antwort | 0

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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...

mehr als 8 Jahre vor | 1 Antwort | 0

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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...

fast 9 Jahre vor | 3 Antworten | 1

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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...

fast 9 Jahre vor | 1 Antwort | 0

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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...

fast 9 Jahre vor | 1 Antwort | 0

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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...

fast 9 Jahre vor | 1 Antwort | 0

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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 ...

fast 9 Jahre vor | 2 Antworten | 0

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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...

fast 9 Jahre vor | 0 Antworten | 0

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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 ...

fast 9 Jahre vor | 1 Antwort | 0

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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...

fast 9 Jahre vor | 0 Antworten | 0

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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 ...

mehr als 9 Jahre vor | 0

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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...

mehr als 9 Jahre vor | 2 Antworten | 0