Tied Bellows Expansion Joint - Complex Model - CAESAR II - Reference Data

CAESAR II Applications Guide

Reference Data

In the example shown below, the flexible joint is between nodes 30 and 35. The flanged ends of the joint are modeled as the rigid elements in nodes 20 to 30 and nodes 35 to 45. Additional rigid elements, perpendicular to the pipe axis, extend from each flange. The tie rods are 1-inch in diameter. The following nodal layout and corresponding data input is used to build a comprehensive model of the tied bellows.

Weightless rigid elements extend from the flange centerline to the outside edge of the flanges where the tie rods are attached. Only two of eight element data inputs are shown in these examples.

Tie rod is usually at ambient temperature, but it is important to specify this correctly.