I have an air flow into a system which is mixed with a separate gas. Each the air and gas has its own control valve. Once mixed, the flow then goes to 10 individual lines running in parallel each line has its own control valve to adjust flow down each line. There is then an excess line where...
I'm using Belleville washers with PTFE gaskets to account for gasket creep and handle vibrations on flanges. I want to work out torque values to use. The idea is that the Belleville washers will deflect enough to account for the gasket creep in the PTFE. I'm seeing this as springs in series and...
I have two stainless tubes which are a distance apart, separated by aluminum (i.e tubes fitted inside aluminum block). One tube has hot fluid, the other has cool fluid to remove heat from the hot tube. I know the mass flow rate, inlet and outlet temperatures for the hot side, and the amount of...
I'm designing a system housed in an enclosure (Peli case style) that will hold 1 psi (0.0069 N/mm^2) pressure with a top panel held in by a number of screws.
The top panel has a surface area of 83607mm^2, therefore, a total force of = 0.0069*83607 = 577N. At present, I have 10 screws holding...
I'm designing a system where a sea water sample must have its temperature controlled between near its freezing point (-2°C) and +30°C to simulate sea temperatures. To control it, the sample will be in contact with a block, which will be controlled by an external circulating water bath. The image...
I'm in the process of designing a part which must be submerged down to 2000m (200 bar/20 MPa/ 2900 psi). A sketch of the part has been attached. The outer housing will be titanium and the inner part aluminium. I've carried out the calcs for the outer part to withstand the external pressure, but...
Hi,
I was wondering what absolute and relative damping mean? I am looking into vibration testing methods - impact hammer testing can measure the absolute damping while shaker testing measures relative damping. Can anyone help with their definitions and possible application?
Hi,
So basically I am wondering how can you increase damping within a part, just by altering its geometry. I've researched this topic, but haven't yet found anything significant. Here are my main findings:
- Rayleigh Damping uses the equation: [C] = α[M] + β[K], which to me shows that mass and...
