The optimization tag has no wiki summary.
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Finite Element, NASTRAN, how to print the differential stiffness matrix in .f06 output file [migrated]
We are working on an optimization problem in which we can approximate the eigenvalue calculation by assuming a constant eigenvector, using the formula:
$$
...
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1answer
34 views
What lifting mechanism is likely to have the best energy recovery ratio?
Suppose I was designing an apparatus which needed to lift 250kg 5cm high, hold it there for a few seconds, and then lower the object back to the original height. Such a process would need to be ...
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110 views
Utilizing maximum acceleration $a$ for displacement $d$ with initial velocity $v_0$ and final velocity $v_1$
Problem
My goal is to move an object from point a to b (displacement $d$) as fast as possible utilizing the maximum available acceleration $a_{max}$, taking into account the initial velocity $v_0$ ...
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2answers
68 views
Determining the probability of a particular site having a particular spin in an Ising model
Given an Ising model, we have the energy formula:
$E= - \sum_i h_i S_i - \sum_{i \neq j} J_{ij} S_i S_j$
and we have the probability of a given state, given the energy of that state and the ...
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62 views
Pareto efficiency and Standard Model parameters
Pareto Efficiency is a well understood concept in economics, which basically is a condition where no one actor could be made better off without some one being made worse off. This condition allows ...
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Dual methods in structure optimization
I am studying Structure Optimization, and the teacher took a few weeks to detail dual methods, but I don't get why it is useful.
From an optimization problem with ...
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0answers
79 views
How would a physicist move? [closed]
Let's assume that Johnny Physicist has decided to move from his poor dingy second story apartment, into his much deserved home. Without making modifications to the existing structures? What would be ...
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1answer
176 views
What are the optimal shapes, if any, for fractal antennae?
A DIY fractal antenna project is described at http://www.htpc-diy.com/2012/04/diy-flexible-fractal-window-hdtv.html
Mainly idle curiosity, but I was wondering what the principles behind these might ...
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1answer
118 views
Good algorithm for in-experiment 1-D optimization?
I'm running an experiment -- for the question, it doesn't matter which one, but I'm measuring an optical intensity $I$ as a function of two parameters: reflection angle $\theta$ and wavelength ...
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3answers
198 views
How does the shape (form; not cross-section) of a spring impact performance?
Cylindrical compression springs are everywhere and then some applications choose other forms like rectangular or unique polygonal form. What impact does the form of a compression spring have and how ...
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218 views
The Double Integrator: Matching velocity and position as quickly as possible with only a limited amount of force available
If a body with mass $m$ begins at position $x_0$ with velocity $v_0$ and experiences a force that varies as a function of time $f(t)$ (and we ignore gravity, friction, and everything else that might ...
