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: 133
Engineering news on Phys.org
Thread 'Where is my curb stop?'
My water meter is submerged under water for about 95% of the year. Today I took a photograph of the inside of my water meter box because today is one of the rare days that my water meter is not submerged in water. Here is the photograph that I took of my water meter with the cover on: Here is a photograph I took of my water meter with the cover off: I edited the photograph to draw a red circle around a knob on my water meter. Is that knob that I drew a red circle around my meter...
Hi all, i have some questions about the tesla turbine: is a tesla turbine more efficient than a steam engine or a stirling engine ? about the discs of the tesla turbine warping because of the high speed rotations; does running the engine on a lower speed solve that or will the discs warp anyway after time ? what is the difference in efficiency between the tesla turbine running at high speed and running it at a lower speed ( as fast as possible but low enough to not warp de discs) and: i...
Back
Top