Updates & Finalization for the ANSYS simulations of the Vacuum System 28 March 20111Nick Gazis, CERN-BE/RF & NTU-Athens

28 March 20112Nick Gazis, CERN-BE/RF & NTU-Athens Index  Simplifications & Setup Conditions  Cases, Models & Results  Cases & Models  Results  Summary & Future Tasks

28 March 20113Nick Gazis, CERN-BE/RF & NTU-Athens  Bellows geometry complexity  Need of simplified model with same properties: i.Vacuum Force (via the mean diameter); ii.Bellows stiffness. (input form A. Samochkine & C. Garion) Bellows convoluted part  Equivalent Pipe I.Pressure mbar; II.Gravity (component weight); III.Supports environment. Boundary Conditions Loads I.Forces Application Pressure Load of ΔP = 1 bar Simplification & Setup Conditions

28 March 20114Nick Gazis, CERN-BE/RF & NTU-Athens Vacuum Tank BellowsRF Network BellowsVacuum Network Bellows BOA HB (ST from ST ) BOA SAG 57.4 (ST from ST ) BOA Di 24 (ST from ST ) OD (outer diameter) [mm]78OD (outer diameter) [mm]77OD (outer diameter) [mm]34.4 ID (internal diameter) [mm]60ID (internal diameter) [mm]57.4ID (internal diameter) [mm]24 Dm Cylinder (convoluted part diameter) [mm] 69 Dm Cylinder (convoluted part diameter) [mm] 67.2 Dm Cylinder (convoluted part diameter) [mm] 29.2 Rm34.5Rm33.6Rm14.6 Lb Cylinder (lenth) [mm]41.8Lb Cylinder (lenth) [mm]35.44Lb Cylinder (lenth) [mm]20.39 E (elasticity modullus) [StSt in Gpa] 200 E (elasticity modullus) [StSt in Gpa] 200 E (elasticity modullus) [StSt in Gpa] 200 Sint (cross section) = (pi*Dm*Dm)/4 [mm^2] Sint (cross section) = (pi*Dm*Dm)/4 [mm^2] Sint (cross section) = (pi*Dm*Dm)/4 [mm^2] Kax (axial stiffness) [N/mm]75Kax (axial stiffness) [N/mm]62Kax (axial stiffness) [N/mm]217 (StSt BOA DN60 page 49) (StSt BOA DN57 page 47) (StSt BOA DN24 page 41) Seq (section) = (Kax*Lb)/E [mm^2] Seq (section) = (Kax*Lb)/E [mm^2] Seq (section) = (Kax*Lb)/E [mm^2] Seq (section) = pi*Dm*Ep [mm^2] (verification) Seq (section) = pi*Dm*Ep [mm^2] (verification) Seq (section) = pi*Dm*Ep [mm^2] (verification) Ep Cylinder (thickness) [mm] Ep Cylinder (thickness) [mm] Ep Cylinder (thickness) [mm] Simplification & Setup Conditions

28 March 20115Nick Gazis, CERN-BE/RF & NTU-Athens CLIC prototype module Type 0 Case 1: Vacuum Tank Case 3: RF Network Case 2: Vacuum Network Case Study – Simplified Subassemblies for analysis (Accomplished)

28 March 20116Nick Gazis, CERN-BE/RF & NTU-Athens Case Study – Simplified Subassemblies for analysis (Accomplished) CLIC prototype module Type 0 Case 1: Vacuum Tank Case 2: Vacuum Network Case 3: RF Network

28 March 20117Nick Gazis, CERN-BE/RF & NTU-Athens Case Study – Simplified Subassemblies for analysis (Accomplished) CLIC prototype module Type 0 Case 1: Vacuum Tank Vacuum Tank Bellows Max Deformation: < 40 μm Vacuum Tank Bellows Max Stress: < 30 MPa Vacuum Tank Bellows Max Deformation: < 40 μm Vacuum Tank Bellows Max Stress: < 30 MPa Vacuum Network Bellows Max Deformation: < 15 μm Vacuum Network Bellows Max Stress : < 5 MPa Vacuum Network Bellows Max Deformation: < 15 μm Vacuum Network Bellows Max Stress : < 5 MPa Case 2: Vacuum Network RF Network Bellows Max Deformation: < 25 μm RF Network Bellows Max Stress : < 10 MPa RF Network Bellows Max Deformation: < 25 μm RF Network Bellows Max Stress : < 10 MPa Case 3: RF Network

Combined Cases 1 & 2: Vacuum Tank & Vacuum Network Case 3: RF Network (updated reinforced configuration) 28 March 20118Nick Gazis, CERN-BE/RF & NTU-Athens CLIC prototype module Type 0 Case Study – Subassemblies for analysis (Updated)

Combined Cases 1 & 2: Vacuum Tank & Vacuum Network 28 March 20119Nick Gazis, CERN-BE/RF & NTU-Athens Setup Mesh Combined Cases 1& 2: Vacuum Tank & Vacuum Network

28 March Nick Gazis, CERN-BE/RF & NTU-Athens Vacuum Tank Bellows Max Deformation < 165 μm Vacuum Tank Bellows Max Deformation < 165 μm Vacuum Tank Bellows Max Stress < 45 MPa Vacuum Tank Bellows Max Stress < 45 MPa *Sizes vastly influenced by previous used geometry for modelization  supporting conditions limited Comparison of FE analyses Bellows (modelized) MAX Deformation (μm)MAX Stress (MPa) Updated Realistic Conditions Jan *25.159* Nov Combined Cases 1& 2: Vacuum Tank & Vacuum Network

28 March Nick Gazis, CERN-BE/RF & NTU-Athens Setup Mesh Case 3: RF-Network Case 3: RF Network (updated reinforced configuration)

28 March Nick Gazis, CERN-BE/RF & NTU-Athens RF Network Bellows Max Deformation < 175 μm RF Network Bellows Max Deformation < 175 μm RF Network Bellows Max Stress < 85 MPa RF Network Bellows Max Stress < 85 MPa *Sizes vastly influenced by previous used geometry for modelization  supporting conditions limited Comparison of FE analyses Bellows (modelized) MAX Deformation (μm)MAX Stress (MPa) Updated Realistic Conditions Jan *9.6331* Nov Case 3: RF-Network

Summary of Accomplished Tasks: Calculation of bellows simplification for each case; Modelization of simplified bellows; Modelization of simplified vacuum subassemblies configurations; Simulation of all subassemblies; Comparison of results; Simulation of entire modelized subassembly for each case; Simulation of optimized (reinforced) modelized subassembly for each case; Simulation of less simplified models. Summary & Future Steps 28 March Nick Gazis, CERN-BE/RF & NTU-Athens Comments are always welcome! Future Tasks: Modelization & simulation of updated configurations (when & if existing); Modelization & simulation of the overall vacuum assembly. Additional Task: Future longitudinal extremity support for the test module blank flanges (to be FE analyzed).

Thank you! 14Nick Gazis, CERN-BE/RF & NTU-Athens28 March Nick Gazis, CERN-BE/RF & NTU-Athens