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Updates on DB Girder FE Analyses and Quad Weight Approximations by Nick Gazis, CERN & NTU

This update presents the latest findings from the finite element analyses of DB girders and quad weight approximations conducted by Nick Gazis from CERN-BE/RF and NTU-Athens. Key results include the deformation limits for Boostec and Epucret girders, which are ≤ 17 μm and ≤ 18.7 μm, respectively, and their corresponding eigenfrequencies of 37.7 Hz and 61.5 Hz. Future tasks include updating CLIC module weight estimations and investigating potential impacts of increased weight on reference surfaces. Constructive comments are welcome.

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Updates on DB Girder FE Analyses and Quad Weight Approximations by Nick Gazis, CERN & NTU

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  1. Update on the DB Girders FE Analyses Nick Gazis, CERN-BE/RF & NTU-Athens

  2. DB Quad Weight Approximations Nick Gazis, CERN-BE/RF & NTU-Athens

  3. FE Analysis: Boostec Girder Boostec girder Deformation ≤ 17 μm Boostec girder eigenfrequency: 37.7 Hz Nick Gazis, CERN-BE/RF & NTU-Athens

  4. FE Analysis: Epucret Girder Epucret girder Deformation ≤ 18.7 μm Epucret girder eigenfrequency: 61.5 Hz Nick Gazis, CERN-BE/RF & NTU-Athens

  5. Summary & Future Steps • Future Tasks: • Update of the CLIC module weight estimation (EDMS doc 1009300) A B C • Concern - Possible Future Task: • Epucret top reference surfaces could be affected by the increased weight? • A rupture investigation for fine ceramics (like SiC, Epument) would need thorough time-consuming simulation with fatigue time and dedicated fracture mechanics background for a specific material. Comments are always welcome! Nick Gazis, CERN-BE/RF & NTU-Athens

  6. Thank you! Nick Gazis, CERN-BE/RF & NTU-Athens Nick Gazis, CERN-BE/RF & NTU-Athens 6

  7. Weight Estimation of the CLIC-Module [Type 0] Supplementary Slide EDMS 1009300 * An average SiC density value is taken for estimation. It might change depending on particular material properties. Nick Gazis, CERN-BE/RF & NTU-Athens

  8. CLIC-Module MB & DB Baseline Girder Technical Specification: EDMS 1061067 Supplementary Slide CLIC Type 0 Supporting System (space reservation) • Girder Baseline Configuration (Nov 2009): • Max. Vertical & Lateral Deformation at 10μm • Max. Girder Weight at 240kg • Max. Girder Length of 2m • Max. Load on top of the Girder 400kg/m (distributed weight) • Rectangular Space Reservation of External Dimensions of [320*150]mm • References Surfaces (as presented in color surfaces with possibility of tolerancing ≤ 20 μm) Baseline Configuration with Reference Surfaces DB-quad: Non-concentrated weight of comparable order of magnitude 350 mm 150 mm 150 mm 350 mm • Handling Zones Nick Gazis, CERN-BE/RF & NTU-Athens

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