×
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

Calculating Stress within Beam

Calculating Stress within Beam

Calculating Stress within Beam

(OP)
I am looking to calculate normal and shear stresses within an assembly I made using Inventor. I need to calculate stresses based on assumed loadings, and I was not sure how to do that. We learned in school to use shear stress = VQ/It + Tc/J and normal stress = P/A + Mc/I, with correct definition of variables to calculate these values. Is this an accepted method in engineering? Or do I need to use some type of software for my calculations? I simply want to calculate these stresses for an assembly used to lower down and unfold a horizontal platform. I just need to know if this method is solid.

Thank you,
Alan

RE: Calculating Stress within Beam

well Inventor has it's own FEA package (which I wouldn't use).

if you're wanting to do hand calcs to verify the design, then sure. I'd simplify it to ...
1) the web needs to carry the shear load (V/dt),
2) the caps carry the bending (M/d/A), and probably the compression cap is critical,
3) buckling/crippling allowables are tricky
4) if torsion, design a closed section, stress = T/(2[A]*t)

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