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gfraulini17-Peridot
17-Peridot
January 31, 2014
Question

Calculation of resistance in welded structures - Pro/Mechanica

  • January 31, 2014
  • 2 replies
  • 1985 views

In which manner do I have to treat the welding in Mechanica?

The welding cordons need to be modeled or not?

Can someone indicate me a book (or pdf) where I can find more information about this argument?

When I frequented the PTC course on pro mechanica, the teacher told us to model the cordons and do the analysis on the structure; but at the university (this argument on FEM was not been much pursued) the prof told us not model the cordons and use the value of tension near where the cordon should be for a "analytical calculation" with a ideal sigma.

What do you think?


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2 replies

P
ptc-38287311-Visitor
1-Visitor
January 31, 2014

Welded joints can be considered in Creo Simulate by following types:

  1. Weld joints should be modelled if the focus on analyzing 'welding strength'. So that we may get actual welding failure. Again, it calls for coorect weld properties for the material definition.
  2. If u are sure about welding size, shape and failure, we need not to do this. Eventhough stresses are high in those region they can be assumed.
  3. End Weld and Perimeter weld connections should be used only we define shell idealizations
  4. Predefined Pro/Weld features also act as shells during shell idealized analysis.

Regards,

Shiva

D
dschenken1-Visitor
1-Visitor
January 31, 2014

For welds that are not full penetration welds, it is important to analyze the stress concentration from the crack that is built into the weld, especially if the joint is subject to cyclic loading.

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