f.e.t.s. rfq support structure by peter savage 21 st october 2009
DESCRIPTION
F.E.T.S. RFQ Support Structure by Peter Savage 21 ST October 2009. The welded RFQ section support frame. Made from box section mild steel. EN24 flat blocks x 2 EN24 vee blocks x2. Tops of strips and bottoms of feet to be machined flat and parallel. Total weight = 60kg. - PowerPoint PPT PresentationTRANSCRIPT
The welded RFQ section support frame
Tops of strips and bottoms of feet to be machined flat and parallel.Total weight = 60kg
EN24 flat blocks x 2EN24 vee blocks x2
Made from box section mild steel
What is the load on each support structure?
Component # Weight (kg) Total weight (kg)
Major vane 2 60 120
Minor vane 2 30 65
Static tuner 15 2 30
Dynamic tuner 1 5 5
Vacuum pump 1 30 30
Cooling manifolds 4 4 16
Cooling water 1 5 5
Hanging pipes etc 10
Kinematics 1 12 12
Cradle 1 22 22
320kg
FEA for the RFQ support frame – using quarter model
Component Yield strength (MPa)
Ultimate strength (MPa)
Density (g/cm3)
ASTM A36 steel 250 400 7.80
Nodes: 22500Elements: 9857Quarter load: 75kg (300/4)Load applied: Top faces of padsSupport 1: Frictionless at
2 symmetry planes.Support 2: Fixed under footMaterial: Structural steelMass: 60kg
Results:Total deformation: 0.0027 mmMax equ. stress: 12MPaSafety factor: 20
Stress and deformation due to weight of RFQ
The kinematic mount for the RFQ section
Complete kinematic assembly can be positioned by adjusting these screws
Screw jacks allow for RFQ height adjustment and tilt by resting in:1.cone – allows rotation only2.flat – allows movement in horizontal plane3.vee – allows movement in one axis
1
23
Springs reduce judder when re-positioning RFQ sections
RFQ welded steel support cradle
Cradle must:1.Support the RFQ section2.Allow RFQ section to be mounted to the kinematics3.Allow the RFQ section to be lifted by crane.
Total weight = 22kg
Cradle + kinematics + main support
Here the cradle is shown placed onto the kinematic system which in turn sits on the main frame. To adjust for height or tilt the screw
jacks must first be unlocked by undoing the 3 nuts shown.
To move the entire kinematic assembly in the horizontal plane these four nuts must first be undone
Case1: Under weight of RFQ
Nodes: 31838Elements: 12022Half load: 150kgLoad applied: Top of dummy RFQ.Support 1: Frictionless at
symmetry plane.Support 2: Fixed at screw jack
domes.Material: Structural steelMass: 22kg (cradle + jacks)
Results:Total deformation: 0.007 mmMax equ. stress: 11MPaSafety factor: 22
Case 2: Lifting RFQ
Nodes: 31838Elements: 12022Half load: 150kgLoad applied: Under hooksSupport 1: Frictionless at
symmetry plane.Support 2: Fixed at dummy RFQ
top (not shown).Material: Structural steelMass: 22kg (cradle + jacks)
Results:Total deformation: 0.007 mmMax equ. stress: 10MPaSafety factor: 25