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- Seismic load, horizontal and vertical | Eng-Tips
When you say "p" do you mean rho? Ev is not a resultant vertical reaction, it is a separate force in addition to any vertical reactions In software, it is common to include load combinations with (1 2+0 2Sds)D and (0 9-0 2Sds)D with seismic combinations with ELF to account for vertical seismic force I don't know why it isn't included in many examples Do these examples use full load
- Effect of Molecular Weight On Compressor Performance
Reference to the link, I think the reasoning on peripheral Mach number is more adequate than Molecular weight to explain the impact on the shape of performance curves A lighter gas may produce similar effect on curves (reduction of range, curve steepening effect) to that of heavy gas if both are associated to conditions with equivalent Mach numbers
- Torque spec changes from nut to bolt head? | Eng-Tips
In a torque spec for a typical bolt, washer and nut arrangement, is the proper torque value affected whether it is applied to the bolt head as opposed to the nut? Thanks!
- Motor Starting Power Power Factor | Eng-Tips
I think you have a misconception somewhere The starting current is still going to be 405 A (at full voltage) regardless of what assumptions you make about power factor The starting power factor has nothing to do with with running load kW 0 36 sounds a little high, but the difference between assuming 0 2 and 0 36 should not be too significant You need to pick a NEMA starting code in the
- No of Passes | Eng-Tips
The design process is an interative one, estimate the area required using a starting overall heat transfer coefficent, check tube side velocities, set number of passes for the desired velocity, check effect on the temperature difference, check effect now on heat transfer coefficient, check whether dP through tubes is okay (and if not, go to the
- Relationship between axle torque and wheel torque | Eng-Tips
I can see a momentary 'jerk' occuring at the steering wheel (as force is applied through the drive train) that might be caused by an initial difference in axle twist, but I also see the differential almost immediately 'cancelling out' this affect
- Is this application considered Single Shear or Double Shear?
The more meaningful distinction between "single shear" and "double shear" has to do with the how the fastener fits bends within the members, how the fastener and nut collar react moments, and the effect of eccentricity These conditions affect the static strength to some degree and may affect the fatigue strength to a greater degree
- Pinned Rolling support in Roof Truss (timber) | Eng-Tips
Can anybody explain in simple terms for a truss newbie What is the difference between designing a truss with two pinned supports and designing it with one pinned and one rolling?
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