Piping Stress Analysis

AP Dynamics Inc. can perform all types of stress analysis in piping and components. Following is a list of the types of analyses usually performed by AP Dynamics Inc. Engineers:

Thermal Stress Analysis
Where stresses produced by thermal/expansion, pressure and environmental forces are on the piping are calculated and compared to allowable stresses from applicable standards (often B31.3 for above-ground piping and Z662 for underground piping). In case of non-compliance, the design of the routing or supporting structures is modified until compliance is achieved.

 

Dynamic Analysis
In cases in which the piping is associated to rotating machinery, dynamic analysis helps to prevent the potential excitation of pipe lengths by the shaking forces in the machinery.

Local/Global Buckling Analysis
Is necessary if a muskeg type soil is present, i.e., the soil does not have adequate stiffness to prevent local lateral pipeline movement.

FEA Analysis
Detailed analysis of supports that are directly welded to the pipe ensures that at no point stress concentration becomes a problem, in particular when piping is subjected to cyclic loading.

In all cases, AP Dynamics Inc. can perform an assessment of the likelihood of failure based on fracture-mechanic criteria for the operational conditions such as fatigue, load cycles and transient conditions.

Deliverables
• In all cases a complete report of the stress levels and design changes/recommendations necessary to reduce stresses to applicable code allowable or operationally safe levels.