| Applies To | ||

| Product(s): | AutoPIPE, | |

| Version(s): | ALL | |

| Area: | Modeling | |

| Original Author: | Bentley Technical Support Group |

What are some typical modeling approaches for Viking Johson Couplings?

Follow the steps to model the Viking Johson Couplings:

1. Simply model a piping element with user defined properties having started from a Achor point at A00 and then insert a piping element to A01 of certain length suppose 1000mm.

2. Insert a piping element which length suppose 1250mm to A02 and A02 is the point from where the coupling starts supposing I am taking **long sleeve L03** coupling.

3. Then insert a pipe run equal to 50mm till node no. A03. Now insert an expansion joint of length 150mm to A04 (considering setting gap max.X as per catalogue)

4. Now the user has to define the stiffness (Axial, bending & torsional) values of expansion joint, that totally depends on the user. And the pressure trust area is the pipe area. As shown in below screenshot.

5. Similarly, insert a point at 50mm from A04 to A05 and then insert pipe element of 1250mm to A6 and then 1000mm to A07.and insert an anchor point at A07 to close the system.

6.Now insert a guide support at A02 connected to A05,define zero gaps for all the direction and then the friction coefficient is the value which is between the compressed gasket and pipe surface. This value will provide the resistance bending force between the coupling and pipe. Stiffness of the bolts user has to define as the support stiffness. As shown in screenshot below.

**Note:** 1. Better to get the bolt stiffness values, friction values between the gasket and Pipe OD from the vendor.

2. Define the stiffnesses of the expansion joint as per the requirement.

**Model Different Types of PIPING Components**