@sleepdrifter
Sorry, I confused the direction of force. Refer below:
Now considering the statement by @MintJulep that the bolts have excess strength, I try to concentrate on the expansion force below. Note: it is difficult to predict (without FEA) the distribution of stress between pipe body...
Since there is a seal, is threading of blind flange in orange required? I assumed that there in no threading in the orange blind flange.It is not clear in the drawing.
You need to run thermal and sustained load cases with the neatest standard reducer thickness and get the end forces and moments of the reducer. You can then input the same forces and moments as boundary conditions in FEA analysis with required non-standard thickness of reducer. The end forces...
This may be a problem in tightening the bolts. Refer below:
The available pressure cone is very small resulting in low stiffness of the body.
The other stresses to be checked(in addition to @Stress_Eng ) are as follows:
1. The body tearing at the outside surface due to pressure forces
2. If...
For option 1, there should be an expansion joint at the pump discharge, as the thermal expansion for the atmospheric temperature range(about 50 deg C) may be close to 35 mm. It will be difficult to provide piping loops inside mines to absorb this amount of expansion, considering it is possibly a...
Yes, correct on principle. But as per practice in power plant indistry, for such high pressures, we usually have two valves in series, mainly as protection against valve passing.
I agree. But such a theoretical analysis will be time-consuming, and I would prefer ANSYS or similar software to simulate the transients.
However, I believe that the above formula will give the order of magnitude of F.
For such a large pressure drop, a small orifice size may be required. Hence, it will be better to have a series of orifices to reduce the pressure drop per orifice.
The small orifice size will tend to be blocked by dirt, so the valve should be placed upstream of the orifice to enable cleaning...
The explanation is as follows:
Suppose P is applied in +ve x direction.
1. There will be tensile force along asymmetrical member(end co-ordinate(-.707,-0.707)) as this will try to extend.
2. This tensile force will have a vertical component, which will be neutralized by tensile and compressive...
I also ran my software for asymmetrically arranged truss. The result is given below: One can see that both the above postulates do not hold good for this case.
Today, I checked with my developed FEA program for trusses with 4 symmetrical elements. The given postulates hold good in the sense that:
1. The magnitude of displacement does not vary with the direction of the applied force.
2. The displacements are along the direction of the applied force.
AWS D 1.1 may not be applicable as the minimum yield stress for A 517 Gr F is 100 ksi and the D 1.1 is applicable only up to 100 ksi. Please check with the latest codes.
What is QT material?
The fire protection system is typically designed for the protection of occupants and buildings. Also, the equipment can be protected up to a certain extent.
Referring to ISO 834 fire temperature curve, the temperature can reach about 1000 deg C after 1 hour. It may be futile to try a...
Mostly, non-pressure parts welded to pressure parts and seal welds for pressure-retaining handholes and inspection plugs are considered non-critical, but this may depend on the code you are following.
Even if the re-hydro test may not be mandatory, there are certain restrictions in the repair...
The problem is complicated mostly because there is multiple statical indeterminacy. Also the members need to be pretensioned as compressive loads may lead to buckling. But may be we can neglect buckling.
However, it will be more convenient to use FEA.
Referring to ENDNOTE 1(at the end) :
"The water may contain additives provided the flash point of the aqueous solution at atmospheric pressure is 185°F
or higher."
Also under U1-Scope:
"(2) For the scope of this Division, pressure vessels are containers for the containment of pressure, either...
