INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Aluminium fatigue design (cyclic wind loading) to Eurocode EN 1999-1-3

Aluminium fatigue design (cyclic wind loading) to Eurocode EN 1999-1-3

(OP)
I've determined the N - stress relationship (relating the maximum stress the aluminium can take for a number of load cycles), but I don't know how many load cycles the aluminium should be designed to. Can anyone help? The design life is 20 years, and it's a 100kg sign that will cantilever off a wall (about 5m in the air) in the UK.

Perhaps this is something you determine in EN 1991-1-4 (wind loading to Eurocode)?

Cheers

RE: Aluminium fatigue design (cyclic wind loading) to Eurocode EN 1999-1-3

what flavour of Aluminium ? 2024 ? 6061 ? ... ?? what temper ?

I don't know your code requirements, possibly the code specifies fatigue loads (similar to defining static loads as a 1/100 years gust). Your design life is 20 years or 7305 days or 175320 hours ... maybe designing for 1E6 cycles is adequate ? which (for 2024T3, with a healthy Kt = 3.4) would give you 10ksi (for a 1/hr load).

another day in paradise, or is paradise one day closer ?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close