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Prateek Srivastava


Active since 2017

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formula behind nlinfit function
I have used nlinfit function in my script which is part of my Master thesis and I was asked a question what is the math or the f...

mer än 6 år ago | 1 answer | 0

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Question


I want to create the surface plot by surface command for my sets of data.
In my data there is temperature in one column,speed in one column and modulus of elasticity in one column.I would like to take t...

mer än 6 år ago | 1 answer | 0

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answer

Question


How to Find the intersection coordinates from stress strain graph to find the Yield point.
I have some data from the tensile experiment.I have found the Young Modulus of Elasticity, and also drawn the offset line now I ...

mer än 6 år ago | 0 answers | 0

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Question


I have plotted the stress strain graph from the tensile experiment and now I want to find the young's modulus of elasticity,yield point and yield stress
could you please help I want to write a code in such a way that we do not have to pick the points rather every time for finding ...

mer än 6 år ago | 1 answer | 0

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Question


I am plotting a graph from strain vs stress from the tensile test experiment but it is starting form negative due to to compression forces how can I start it from positive .
please find the attached matlab script and the data from tensile test.the file which I have used is a .dat file but I was not ab...

mer än 6 år ago | 1 answer | 0

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Question


yes you are right it was named as sign_PV my mistake,actually I changed the name from sign_PV to stress_PV because it was conflicting with the Matlab command. I did what you said but still there is one error it is showing: Subscript indices must eith
yes you are right it was named as sign_PV my mistake,actually I changed the name from sign_PV to stress_PV because it was confli...

nästan 7 år ago | 1 answer | 0

1

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Question


Error using load Must be a string scalar or character vector
thanks a lot for your answer I now understand my mistake but after this when I am trying to write the rain flow script in order ...

nästan 7 år ago | 2 answers | 0

2

answers

Question


I am writing a script for rainflow algorithim I have completed can you suggest how to proceed further.
I have already find the peaks and valley for the given set of data now I have to start with the iteration and plot the final aft...

ungefär 7 år ago | 0 answers | 0

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I am trying to find the maximum and minimum values from a given set of data.
when I am using findpeaks command in Matlab I am only getting the peak value I also want the minimum value could you suggest wh...

ungefär 7 år ago | 2 answers | 0

2

answers

Question


Trying to load .dat file matlab
I am trying to use dlmread command for importing .dat file which has stress and strain values .strain values are in the range of...

mer än 7 år ago | 1 answer | 0

1

answer

Question


I am building a quarter car suspension model by writing a script in matlab and a model in simulink but my eqaution of motion and state space representation difference is not coming to zero
my state space representation equation and equation of motion difference should come close to zero something in the range of...

mer än 7 år ago | 0 answers | 0

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answers

Question


Half car suspension model matlab script and simulink
I have written a equation of motion and state space equation for a half car suspension model and I have also created a simulink ...

mer än 7 år ago | 1 answer | 0

1

answer

Question


how to transform Euler angle to loacal coordinate
I have a data from euler angles stating X,Y,Z in degree ,I want to transform this into local coordinates.

mer än 7 år ago | 0 answers | 0

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I have got data from accelerometer,gyroscope and magnetometer .It also give me Euler angle data in X,Y,Z coordinates in degree.
this is the data from hand movement where I am holding a weight in my hand and moving it up and down.I have to find out out of t...

mer än 7 år ago | 0 answers | 0

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Question


how to find mode shape and natural frequency from the below script.
f1=m1(:,1); r1=m1(:,2); i1=m1(:,3); mag1=sqrt(r1.^2+i1.^2); subplot(3, 3, 1); plot(f1,mag1); f2=m2(:,1); r2=m2(:,2)...

mer än 7 år ago | 0 answers | 0

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Answered
I have seven different graphs in one script and I want to see all seven graphs in one screen what matlab command I can Use.
I got it thanks a lot .But if you could help me once more, after this I need to find mode shapes if you could tell me how to do ...

mer än 7 år ago | 0

Question


I have seven different graphs in one script and I want to see all seven graphs in one screen what matlab command I can Use.
f1=m1(:,1); r1=m1(:,2); i1=m1(:,3); mag1=sqrt(r1.^2+i1.^2); plot(f1,mag1); figure(1); f2=m2(:,1); r2=m2(:,2); i2=m2(:,...

mer än 7 år ago | 3 answers | 0

3

answers

Question


stress = Ck45(:,1); strain = Ck45(:,2); plot(strain,stress); I am plotting a stress strain curve but the curve is not starting from zero so my professor told me to shift he curve but for that I must subtract the 1st-1st element 2nd -1st element so on
stress = Ck45(:,1); strain = Ck45(:,2); plot(strain,stress);the curve for this is not starting from zero and I need to shift i...

mer än 7 år ago | 1 answer | 0

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