How to calculate the stiffness of a pipe
Thread Content
Generally, the formula for calculating the wall thickness of pipes is based on their strength. If the design pressure of a pipe is very low and its diameter is extremely large, the wall thickness calculated using the strength formula will be excessively thin. In such cases, there is concern regarding whether the stiffness of the pipe might be an issue; how this stiffness is calculated needs to be taken into account, especially when the pipe is also subject to external pressures. For example, for a pipe diameter of DN1200, what can be the minimum wall thickness? 6mm？ Thank you
It must also have something to do with the material, right?
This calculation formula must be related to the material; the strength calculation formula takes into account the allowable pressure of the material. But I’m not quite clear about this stiffness calculation formula right now.
Help lift it up,,, Looking forward to the answer
Does anyone know, or could we discuss this? This problem has been bothering me for a long time
“If the design pressure of the pipe is very low and its diameter is extremely large, then the wall thickness calculated using the strength formulas should be extremely thin; I don’t think this understanding is entirely correct. As can be seen from the formula for calculating the wall thickness of pressure pipes, as the diameter increases significantly, the wall thickness also increases, and this relationship is linear. Additionally, the design pressure is extremely low; depending on the circumstances, it might be possible to avoid classifying it as a pressure pipeline and instead use a HVAC pipeline, which is much thinner.
It is related to factors such as the spacing of stiffness root supports and hangers, as well as the medium used. Calculate the deflection; generally, there are requirements regarding deflection.
All the stiffness calculations that have been found so far are related to the calculation of the spacing between supports and hangers
This is what is done for all pipes subject to external pressure
According to clause 7.1.4 of SH/T3059, the minimum wall thickness is determined based on DO/150; stiffness should be taken into consideration in this process