Trunnion on the Straight Pipe

Trunnion on the straight pipe, is a pipe connected without an opening. Trunnion on the straight pipe element can be placed into the node of intersection of three pipe elements (like a tee element). It allows to check stress and flexibility in the junction point

Properties

  

Property

Description

Name

Element name. If checked then it shown in 3D view

Branch not perpendicular to header

If checked, branch and header joint angle is not checked and analysis is header as for a slanted stub-in. If not checked, branch and header joint is checked and if it is not equal to 90 degrees, an error is displayed.

Weight

Tee weight (with flanges) without insulation and product. Value set in standards is used, without taking into account the overload factor. Product and insulation weight with corresponding overload factors is calculated automatically based on adjoining pipes

Automatic weight calculation

If selected, tee weight is calculated automatically as total volume of two header and branch cylinders

Analysis type

There are several methods to analyze trunnions. It is simplified Kellogg method, original Kellogg method and use SIF and k factors automatically calculated using integrated finite element software PASS/NOZZLE-FEM

Longitudinal Weld Joint Efficiency Factor, E

Longitudinal weld joint efficiency factor, E. More...

Pad thickness, tr (Sn)

Pad thickness

Refresh SIF and k using FEA

See Integration with Nozzle-FEM

SIF

See Integration with Nozzle-FEM

Toolbar Access

Insert > Tee > Trunnion