Mechanical mass-spring-damper model from IV curve

In summary, the data was gathered using a Keithley 4200, which is a semiconductor characterization system and a probe station. This curve is a force vs velocity plot, and is not linear because the nanowires behave this way. To model the non-linear spring, you have to preserve the resistance, or R.
  • #1
abburiaditya
6
0
hey guys, I have an IV cure from which i need to develop a mass-spring damper model... can somebody help me with that.

the curve has basically a 3 slopee, each linear...

if somebody has any kinda idea abt this, i can post the curve as an image...

thanks
 

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  • #2
I'm not real clear yet on what you are trying to do, but yes, any figures or more info that you can post will help.
 
  • #3
i have posted a curve that i have obtained from tests on a bunch of nanowires... i need to develop a spring-mass-damper system that best describes this curve...

the mechanical analogy for current i guess is Force and for voltage is Velocity, so this same curve is again a force vs velocity curve... so is it possbile to get a spring-mass-damper system from the curve?
 
  • #4
I'm still not clear on the mechanical analogy thing, but before that, why is that plot not linear? How was that data gathered?
 
  • #5
i guess the plot is not completely linear because this is how the nanowires behave... the data was gathered using a Keithley 4200, which is a semiconductor characterization system and a probe station
 
  • #6
abburiaditya said:
i guess the plot is not completely linear because this is how the nanowires behave... the data was gathered using a Keithley 4200, which is a semiconductor characterization system and a probe station
Fair enough. Why do you need to translate that into a spring paradim, or am I misinterpreting your question?
 
  • #7
this is basically part of my research... nobody has researched the materials i have been working on... so now that we have some data and plots, we want to get an electrical model and also into a spring paradime... we want to investigate certain efeects that might be going on in the wires... like maybe a peizo electric effect... so that is why i need to develop those models
 
  • #8
The intristic parameter you can recover from IV curve is R (resistance), which is simply V/I

The instristic parameter of a spring is of course the spring constant k.

Hooke's law is F = -k*x

so k = -F/x

Now you can substitute Volts (V) for Force (F) and current (I) for displacement (x)

That would model a non-linear spring, possible made from some weird alloys, because your data is non-linear.

BTW, this is one of many possible transformations. Whatever you do, you have to preserve R.
 

FAQ: Mechanical mass-spring-damper model from IV curve

What is a mechanical mass-spring-damper model from IV curve?

A mechanical mass-spring-damper model from IV curve is a mathematical representation of the relationship between force and displacement in a mechanical system. It consists of a mass, spring, and damper component, and is commonly used in engineering and physics to analyze and predict the behavior of systems under different conditions.

How does the mass-spring-damper model relate to IV curve?

The mass-spring-damper model is often used in conjunction with the IV (current-voltage) curve, which is a graphical representation of the relationship between voltage and current in an electrical circuit. By analyzing the IV curve, the properties of the mechanical system can be determined, such as the stiffness of the spring and the damping coefficient of the damper.

What are the key components of the mass-spring-damper model?

The key components of the mass-spring-damper model are the mass, spring, and damper. The mass represents the physical object in the system, the spring represents the stiffness or elasticity of the system, and the damper represents the resistance to motion or damping in the system.

How is the mechanical mass-spring-damper model from IV curve used in real-world applications?

The mechanical mass-spring-damper model from IV curve has various real-world applications, such as in the design of suspension systems for vehicles, shock absorbers, and building structures. It is also used in the analysis and design of electrical circuits, as the behavior of many electrical components can be modeled using the mass-spring-damper model.

Are there any limitations of the mechanical mass-spring-damper model from IV curve?

While the mechanical mass-spring-damper model is a useful tool for analyzing and predicting the behavior of systems, it does have some limitations. For example, it assumes that the system is linear, meaning that the relationship between force and displacement is constant. In real-world systems, this may not always be the case, and the model may not accurately reflect the behavior of the system. Additionally, the model does not take into account external factors such as friction, which can affect the system's behavior.

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