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ANSYS simulations for the Drive Beam U-clamps*

This document presents a detailed analysis of U-clamps used in the CLIC Two-Beam Module, including boundary conditions and finite element analysis (FEA) results. Conducted by Nick Gazis from CERN and NTU-Athens, the case study explores three scenarios: Sliding and Fixation of U-clamps under varying loads, including gravity, vacuum, and thermal influences. The study consolidates various models to evaluate deformation and stress effects, summarizing accomplished tasks and outlining future optimization and testing objectives for DB U-clamps.

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ANSYS simulations for the Drive Beam U-clamps*

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  1. ANSYS simulations for the Drive Beam U-clamps* • * continuation of EDMS doc 1133226: • “MB U-clamps FEA” Nick Gazis, CERN-BE/RF & NTU-Athens

  2. Index • Boundary Conditions • Case Study • Cases • Results • Summary & Future Steps Nick Gazis, CERN-BE/RF & NTU-Athens

  3. CLIC Two-Beam Module DB Girder • Boundary Conditions P1 P2 P3 P4 ADB BDB CDB Q1DB DDB EDB FDB Q2DB DB type 0 II I Model Boundary Conditions • 3D layout with colored clamp cases (explanatory slide following): • Case 1 (blue): Sliding • Case 2 (green): Fixation • Case 3 (red): Sliding (Analysis simplified model) Nick Gazis, CERN-BE/RF & NTU-Athens

  4. CLIC Two-Beam Module DB Girder • Boundary Conditions for the U-clamps • Cases : • Case 1* (blue) –Sliding– • 1 DoF along the z-axis • (longitudinal dilatation of PETS) • 0 DoF along the y-axis • 0 DoF along the x-axis • Case 2 (green) –Fixation– • 0 DoF along the z-axis • 0 DoF along the y-axis • 0 DoF along the x-axis • Case 3* (red) –Sliding– • 1 DoF along the z-axis • (longitudinal dilatation of PETS) • 0 DoF along the y-axis • 0 DoF along the x-axis • *[only layout difference between cases 1 & 3, same principle for the boundary conditions] • Case Study: • U-clamp baseline material: Aluminum Alloy; • Boundary Conditions: • Gravity; • Vacuum: Pressure Load • (ΔP=1 bar); • Thermal loading for the PETS (20-40°C). Input from D. Gudkov (Analysis simplified model) Nick Gazis, CERN-BE/RF & NTU-Athens

  5. Case Study – Models & Cases Meshed Model U-clamps models Case 2: Fixation U-clamp Case 1: Sliding U-clamp Case 3: Sliding U-clamp Nick Gazis, CERN-BE/RF & NTU-Athens

  6. Results – Deformations Case 2: Fixation U-clamp Case 3: Sliding U-clamp Case 1: Sliding U-clamp Nick Gazis, CERN-BE/RF & NTU-Athens

  7. Results – Stresses Case 2: Fixation U-clamp Case 3: Sliding U-clamp Case 1: Sliding U-clamp Nick Gazis, CERN-BE/RF & NTU-Athens

  8. Summary & Future Steps • Summary of Accomplished Tasks: • Study of boundary conditions for MB and DB; • MB & DB U-clamps modelization; • MB & DB U-clamps and MB & DB RF-components simplification; • MB & DB U-clamps simulation. • Future Tasks & Testing: • DB U-clamps optimization (if needed); • Simulation of the overall subassembly of the DB components (with the fixed DB-quads supports and the interconnecting bellows). MB U-clamps FEA: EDMS 1133226 Comments are always welcome! Nick Gazis, CERN-BE/RF & NTU-Athens

  9. Thank you! Nick Gazis, CERN-BE/RF & NTU-Athens Nick Gazis, CERN-BE/RF & NTU-Athens 9

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