Pipeline Longitudinal Stress Modules

Calculate pipeline longitudinal stress, Tresca combined stress, and Von Mises equivalent stress checks. Hoop stress is calculated using either Barlow's equation (suitable for thin wall pipes), the log equation (suitable for thick wall pipes), or Lame's equation (suitable for thick wall pipes).

The axial load is calculated using the thick wall formula (API RP 1111 and DNV OS F101). For onshore and offshore pipelines the internal pressure is assumed zero during installation. For offshore pipelines, the external pressure is assumed constant for installation and operation. For onshore pipelines external pressure should be ignored. The design factor should include all relevant factors (eg quality factor E and stress factor F etc).

Change Module :

• Lame's Equation Compound Cylinder Or Pipe Calculation Module
• Lame's Equation Thick Wall Pipe Stress Calculation Module
• Pipeline Allowable Stress Calculation Module
• Pipeline Axial Load Calculation Module
• Pipeline Collapse Pressure Calculation Module
• Pipeline Expansion Spool Calculation Module
• Pipeline Fluid Velocity And Flowrate Calculation Module
• Pipeline Fluid Volume And Mass Calculation Module
• Pipeline Hoop Stress Calculation Module
• Pipeline Local Pressure Calculation Module
• Pipeline Maximum Allowable Design Pressure Calculation Module
• Pipeline Natural Vibration Frequency Calculation Module
• Pipeline Test Pressure Calculation Module
• Pipeline Wall Thickness Calculation Module
• Pipeline Yield Stress And Tensile Stress Calculation Module
• All

Related Modules :

• Beam Bending Calculation Module
• More Combined Stress Modules

Calculate ASME B31.4 flexibility

• stress intensity factors
• allowable cyclic stress
• stress range factor
• longitudinal stress
• expansion stress

Refer to the figures for symbols.

Reference : ANSI/ASME B31.4 : Liquid Pipelines

Change Module :

• ASME B31 Pipe Diameter And Wall Thickness Schedule Calculation Module
• ASME B31 Stress Intensity Factor Calculation Module
• ASME B31.1 Power Piping Flexibility And Stress Factor Calculation Module
• ASME B31.3 Process Piping Flexibility And Stress Factor Calculation Module
• ASME B31.5 Refrigeration Piping Flexibility And Stress Factor Calculation Module
• ASME B31.8 Gas Pipeline Flexibility And Stress Factor Calculation Module
• All

Related Modules :

• ASME B31.4 Oil And Liquid Pipeline Calculation Module
• More Fatigue Damage Modules

Calculate DNVGL RP F101 pipeline longitudinal stress from axial stress and bending stress.

The longitudinal stress is calculated from the nominal diameter and wall thickness. The axial stress can either be calculated from the pipeline temperature and pressure, or user defined.

Reference : DNVGL-RP-F101 : Corroded Pipelines (Download from the DNVGL website)

Change Module :

• DNVGL RP-F101 Single Corrosion Defect Calculation Module
• DNVGL RP F101 Complex Corrosion Defect Calculation Module
• DNVGL RP F101 Corrosion Line Pipe Schedule Calculation Module
• DNVGL RP F101 Interacting Corrosion Defect Calculation Module
• DNVGL RP F101 Local Incident Pressure Calculation Module
• DNVGL RP F101 Maximum Defect Depth Calculation Module
• DNVGL RP F101 Temperature Derating Calculation Module
• All
• More Corrosion Modules