The maximum shear stress theory states that failure of a piping component occurs when the maximum shear stress exceeds the shear stress at the yield point in a tensile test.Read More
Tag: Stress Analysis
Out of the Six Theories of Failure, which are the 2 that are the most widely used?
The Maximum Principle Stress Theory and Maximum Shear Stress TheoryRead More
What does the Maximum Principle Stress Theory state?
This theory states that yielding in a piping component occurs when the magnitude of any of the three mutually perpendicular principal stresses exceeds the yield strength of the material.Read More
What are the 5 modes of failure of piping design?
Failure by general yielding, yielding at sub-elevated temperature, brittle fractures, and fatigue.Read More
What is the purpose of Stress Analysis?
Stress analysis ensures the safety of piping and piping components, safety of connected equipment and supporting structure, and that piping deflections are within limits.Read More
What is Stress Analysis?
A term applied to calculations, which address the static and dynamic loading, resulting from the effects of gravity, temperature changes, internal pressures, fluid flow, seismic activity, and any external loads.Read More
What is the Stress-Strain curve?
It is a visual representation of the effects of various loading conditions on a piping system between stress and strain.Read More
What are the 5 majority causes of failures (after flexibility analysis) of a system?
Vibration, thermal bowing, creep, thermal fatigue, and steam/water.Read More
What are the effects of excessive flexibility?
Excessive flexibility causes an increase in material costs, pressure drops, and loss of pump efficiency.Read More
What are the methods of incorporating flexibility in a piping arrangement?
Using flexible piping with bends and turns, use of expansion loops between fixed locations, or use of expansion joints between two anchor points of a pipe run.Read More
What is the purpose of flexibility analysis?
Flexibility analysis assures that there is not any overstress or fatigue, leakage at joints or distortions are piping connections or terminals.Read More
What is the objective of having flexibility within a piping system?
To produce neither excessive stress within the configuration and limit excessive end reaction at the piping terminal.Read More
What are some adverse operating conditions of a piping system?
Fluctuating temperatures, changes in pressure, and modification in flow rate.Read More
Does materials incompatibility play a role on stress analysis?
Usually it would show a disparity between stresses at a particular point. For example, a carbon steel element joined to a stainless steel element would show significantly different stresses over the same temperature change.
Does an anchor restrict motion in all direction that is X-Y-Z directions?
Anchors will restrict movement in all directions and will also restrict the rotation of the pipe as well. In the stress analysis, we may see loads in all three directions which will tell us how “strong” the anchor device has to be.
What is the importance of flexibility in a piping system?
Flexibility ensures that a piping system operates safely.Read More