How to Calculate Damper Specifications to Absorb Energy and Manage Load?

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In summary, the conversation is about designing a damper with specific specifications. The layout and specifications are described, and the person is seeking help with the dynamics calculations and equations needed to design the damper.
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mholland
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Homework Statement


I am trying to design a damper but am struggling with some calculations.
The layout is shown below
damperlayout.jpg

The two red beams are fixed length, with the longer beam rotating clockwise around the blue pivot
The specification I have to go on is that the damper has to absorb 4500J in a 15mm stroke, and the load should not exceed 400kN


Any help with some of the dynamics calculations would be massively appreciated or just pointers/hints
 
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on what equations to use Homework EquationsThe Attempt at a SolutionI haven't been able to start any calculations yet as I am not sure what equations to use.
 

FAQ: How to Calculate Damper Specifications to Absorb Energy and Manage Load?

1. How does a damper work?

A damper is a mechanical device that is designed to absorb and dissipate energy from a moving system, such as a building or a vehicle. It works by converting kinetic energy into heat, which is then dissipated into the surrounding environment.

2. What factors should be considered when designing a damper?

There are several factors that should be considered when designing a damper, including the mass of the moving system, the maximum expected velocity, the type of motion (e.g. horizontal or vertical), and the desired level of damping.

3. What is the equation for calculating the damping coefficient?

The equation for calculating the damping coefficient is: c = (2 * m * wn * zeta), where c is the damping coefficient, m is the mass of the moving system, wn is the natural frequency, and zeta is the damping ratio.

4. How do you determine the natural frequency of a system?

The natural frequency of a system can be determined by dividing the stiffness of the system (k) by the mass (m) using the equation: wn = √(k/m), where wn is the natural frequency, k is the stiffness, and m is the mass of the system.

5. What is the purpose of a damper in a building?

A damper is used in buildings to reduce the amount of movement caused by external forces, such as wind or earthquakes. It helps to stabilize the building and prevent damage or collapse by absorbing and dissipating the energy from these forces.

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