What does Damage Equivalent Load (DEL) mean?

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SUMMARY

Damage Equivalent Load (DEL) is a critical concept in structural engineering and fatigue analysis, particularly when using open-source software like openFAST. DEL quantifies the effects of cyclic or repetitive loading on materials and structures, allowing engineers to assess potential fatigue damage. In this discussion, a Python script is utilized to calculate DEL, with a specific frequency of 2.1 Hz and a time period of 60 seconds. Understanding DEL is essential for evaluating the durability and longevity of engineering designs subjected to dynamic forces.

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  • Understanding of structural engineering principles
  • Familiarity with fatigue analysis techniques
  • Knowledge of openFAST software for wind energy simulations
  • Proficiency in Python programming for data analysis
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  • Research the calculation methods for Damage Equivalent Load in structural engineering
  • Explore fatigue analysis techniques specific to wind turbine blades
  • Learn about the openFAST software capabilities and outputs
  • Investigate the relationship between frequency and fatigue life in materials
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Structural engineers, fatigue analysts, software developers using openFAST, and researchers in wind energy applications will benefit from this discussion on Damage Equivalent Load.

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Hello all, I am using an open source software called openFAST, and it shows various outputs such as the force along the x axis as the blade rotates around.

I then use a python script that uses the following equation:
del.PNG

where:
neq.PNG


and feq = 2.1Hrz for my example and T is 60 seconds

This is what is called Damage Equivalent Load, but im not sure what that actually means? Equivalent to what? What exactly is DEL? is it based off of cycles or something?
thanks
 

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