How to find "equivalent stiffness" of the suspension system?

In summary, the conversation is about finding the equivalent stiffness (k') and damping (c') of a given equation. The suggested method involves using potential energy methods and combining the spring energies taking into account springs in series and factoring out the variable x or theta. The possibility of factoring dampers into the stiffness is also mentioned, but not sure if it is applicable. Another approach mentioned is using the free body diagram and Laplace transform to get transfer functions, but it may not be helpful in this case. A link to supplemental notes on equivalent viscous damping is also provided.
  • #1
yunias
1
0
Dude i have a problem to find the equivalent stiffness (k') and damping (c') of this equation ? thank youvery much physics forum
 

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  • #3
You may want to look into potential energy methods
 
  • #4
You add up and combine all of the spring energies taking into account springs in series act like resistors in parallel, then you factor out your x or theta if its rotational isolating the stiffnesses. Potential energy V=k(eq)*x^2

You'll end up with something like V=( terms with k )*x^2
 
  • #5
Not sure how to factor dampers into a stiffness i feel like they would be ignored

Only other thing i know to do is to write out the fbd of your masses and the middle section on the 2nd image, laplace transform the system equations and get the transfer functions but I'm not sure if that helps you
 

1. What is "equivalent stiffness" of a suspension system?

Equivalent stiffness refers to the overall stiffness of a suspension system, taking into account all the various components and their individual stiffness values. It is a measure of how well the suspension system can resist deformation and maintain stability.

2. How is "equivalent stiffness" calculated?

The equivalent stiffness of a suspension system is calculated by adding up the stiffness values of each component in the system, such as the springs, shocks, and control arms. This can be done mathematically using formulas or through experimental testing.

3. Why is it important to determine the "equivalent stiffness" of a suspension system?

Determining the equivalent stiffness of a suspension system is important because it helps engineers and designers understand how the system will perform under different conditions. It also allows for the optimization of the system to achieve the desired level of stiffness for optimal performance and safety.

4. What factors can affect the "equivalent stiffness" of a suspension system?

The equivalent stiffness of a suspension system can be affected by various factors such as the type and quality of the individual components, the design and geometry of the system, and external forces such as weight and road conditions.

5. How can "equivalent stiffness" be improved in a suspension system?

Improving the equivalent stiffness of a suspension system can be achieved through various methods such as using higher quality components, adjusting the design and geometry of the system, and implementing advanced technologies such as active suspension systems. Regular maintenance and proper tuning can also help maintain and improve the equivalent stiffness of a suspension system.

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