Questions tagged [engineering]

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1answer
69 views

Centroid of a cosine shaped rod

There's a problem in Hibbeler's 14th edition of Statics for Engineering that I've tried a few times and couldn't solve. The problem is shown below. It wants me to find the centroid coordinates of a ...
0
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2answers
69 views

Get the 2d plot of the intersection of 3d surfaces

I am trying to find points $(x,y)$ which satisfy the following constraint: $$1000F_r(x,y)=\frac{1000x\sqrt{1/y^2-1/A^2}}{1+x\sqrt{1/y^2-1/A^2}}=1/2$$ Where $A\simeq0.0008$. My idea was to plot $z=...
0
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1answer
280 views

Translating the Newton-Raphson method from Matlab to Mathematica

I am trying to optimize the variables of two (or three depending on how you think about it) matrices using the Newton-Raphson Method. I made the bottom code in Matlab. The code is pretty simple it ...
2
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1answer
109 views

ThermodynamicData Wrong Air Enthalpy

I'm using ThermodynamicData to do some calculation. By I found that there is a problem in the enthalpy of air. Input: ...
0
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1answer
76 views

Get temperature given pressure and enthalpy

ThermodynamicData["Ammonia", "Enthalpy", {"Temperature" -> t,"Pressure" -> p}] works fine, but how can I get temperature when pressure and enthalpy are ...
2
votes
2answers
111 views

Solving drilling positions using Solve or Trigonometry

I'm working on a profile where I need to position defined points: $ x1 $, $ x2 $, and $ x3 $ With the code below I get these values using Approximate Functions Fit....
4
votes
1answer
405 views

Solving coupled Differential equations with matching condition

I am somewhat new to using Mathematica and was wondering if it can solve the following: $(a \rightarrow h)$ are constants $a w^4[x] =-b + c(d-w[x]-e x),\hspace{2em} x_1 \leq x \leq x_g \\ a w^4[x] ...
3
votes
1answer
88 views

Controlling the motion of points in an animation

I am looking for a better way to show this behavior on a pressure-composition diagram for immiscible liquids (two black dots show behavior at different x-positions, only one is present otherwise): ...
1
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1answer
723 views

Euler-Bernoulli cantilever beam with parabolic load

How do I get the displacement in the free end of a bar with Parabolic load (I.e. in point with length L)? I found the information on a site, but only I found for uniform load. Someone who ...
-1
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1answer
126 views

How can I solve a certain statics problem [closed]

Does someone have any idea how to solve it or from where to start?
3
votes
1answer
95 views

Trouble with some optimization

I am attempting to use Mathematica to solve an optimization problem related to mechanism design (4-bar). The optimization problem is basically the following: 1) Solve these two simultaneous loop ...
16
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2answers
688 views

Heat convection differential equations from 1952 - Mathematica “fails to converge”

I am trying to solve a fundamental problem in analytical convective heat transfer: laminar free convection flow and heat transfer from a flat plate parallel to the direction of the generating body ...
0
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2answers
64 views

How to implement Y-Δ conversion?

There seems no built-in support for Y-Δ conversion (electrical engineering). Any idea on how to implement this function?
13
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3answers
878 views

Time evolution/dynamics of circular plate with hole (Biharmonic equation and stiffness)

On this Mathematica.SE form, there exists information on how to use Mathematica to demonstrate the vibration of a circular membrane and the deflection of an orifice plate (the latter I had raised ...
8
votes
1answer
688 views

Tracing the line of motion of a point in graphics

I'm a beginner in mathematica. I'm making a nb that calculates the output angle of a fourbar mechanism based on the input angle. So the input is the length of the four linkages and the input angle of ...
9
votes
3answers
866 views

FEM Solution desired for “Plate with orifice” deflection: Application of Boundary Conditions and use of Regions

I found the deflection of an orifice plate (circular plate with a hole) subject to uniform pressure using Mathematica's NDSolve functionality. The plate is fixed at its outer circumference and is ...
3
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1answer
108 views

Fourier cosine series of displacement

I'm trying to calculate a Fourier Cosine Series of displacement for general 4-bar mechanism. My code not working. I don't understand why. I need the result as this form ...
2
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1answer
255 views

Max taking too much time. (Pattern loading/frame analysis)

I'm creating a structural engineering program. It's a frame analysis program that computes the shear and moment diagrams. The frame is subjected to 2 kinds of distributed loads(only the beams(...
9
votes
1answer
360 views

Solving 2-D Mechanical Systems

I'm trying to use Mathematica to solve a particular 2-d mechanical system. The system comes from "DESIGN AND OPTIMIZATION OF AN EIGHT-BAR LEGGED WALKING MECHANISM IMITATING A KINETIC SCULPTURE, “WIND ...
9
votes
1answer
651 views

Realistic jet engine flame

I’m trying to make rocket flame and jet engine fire that is a Graphics3D object so that it can be used with a 3D rocket project. There are many types of such ...
6
votes
1answer
442 views

Book about using Mathematica in real world engineering projects

So far I've abused Mathematica by only using it as a notebook. That's a big waste since I've bought a student-life time Mathematica 9 / SystemModeler license. My problem is that I'm not inspired to ...
7
votes
1answer
1k views

Simulating a quick return mechanism

Last time, I got a satisfying answer for simulating a toggle mechanism, just as expected. NDSolve is great. I tried playing with it (as a matter of fact, @MichaelE2 ...
18
votes
3answers
1k views

How can I simulate this toggle mechanism?

I've been introduced to Mathematica very recently. Basically, I haven't actually "solved" anything in my Mathematica lifetime, but I've done some simulations. With my fractional knowledge, I tried ...