×
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!
  • Students Click Here

*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.

Students Click Here

Jobs

Joint behavior in analysis

Joint behavior in analysis

Joint behavior in analysis

(OP)
Have a question for those who utilize truss design software for wood trusses.  How does the software handle joints in the trusses?  Typical truss theory suggests pin-type connections, but actual behavior of the metal plates used in manaufacture seems harder to predict.  All them protrusions on those gangplates sinking into the wood makes me wonder about moment releases and such that are critical when modeling structures.

RE: Joint behavior in analysis

Modeling of joints can be found in publications sold by TPI which is the organization of metal plate suppliers and developers of truss software. In the original 1970's software programs, pinned joint analysis was used combined with moment equations for chord bending and plate eccentricity factors applied at heel joints.
Today, softwares utilize stiffness/virtual work methods to analyze more complex truss designs which are often indeterminate, together with partially rigid joints and empirical formula conditions usually at short cantilever/bearing conditions.

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