What does Damage Equivalent Load (DEL) mean?

  • Thread starter Thread starter LT72884
  • Start date Start date
  • Tags Tags
    Software
AI Thread Summary
Damage Equivalent Load (DEL) is a concept used in structural engineering and fatigue analysis to quantify the impact of cyclic or repetitive loading on materials and structures. It helps in assessing how different loading conditions can lead to similar damage effects over time. In the context of openFAST software, DEL is calculated based on specific parameters, such as frequency and time duration, to evaluate the forces experienced by components like wind turbine blades. Understanding DEL is crucial for predicting structural integrity and lifespan under varying operational conditions. This metric ultimately aids in designing more resilient structures by accounting for fatigue effects.
LT72884
Messages
335
Reaction score
49
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
 

Attachments

  • del.PNG
    del.PNG
    2.7 KB · Views: 139
Engineering news on Phys.org

Thread '2:1 Pulley Question'

I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
View full post »

Similar threads

How Do I Calculate Actual Frequency from Wind Turbine Simulation Data?
Replies
11
Views
2K
Vertical wind turbine with two concentric rotors
Replies
7
Views
3K
What does it mean that MySQL is a server application?
Replies
16
Views
3K
ABC reference frame synchronous generator modelling in Ltspice
Replies
1
Views
3K
Model Pulley: Understanding System Physics
Replies
27
Views
10K
Job Skills What Positions Can I Apply for With a PhD in Electrical Engineering?
Replies
5
Views
3K
What does SIGMA mean in mathematics?
Replies
3
Views
5K
Requesting suggestions for languages, libraries, and architectures for parallel (and sometimes non parallel) numerical and scientific computations
Replies
8
Views
4K
What Does Mathematical Sameness Mean?
Replies
7
Views
3K
What Does Sink Eight TTL Inputs Mean in the Context of AT89C51's Port 0?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top