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Reference Data for KEK Block Isolators: Spring Constants and Load Allowances

This document presents reference data for KEK block isolators as detailed by Yamaoka. It includes spring constant values (N/mm), allowable load capacities (N), and transmissibility factors for various configurations (EC4001 to EC4005). Key results from the ANSYS calculations demonstrate performance in the X, Y, and Z directions, with associated frequency responses from the 1st to the 16th modes. The analysis provides insights into amplitude responses, critical load conditions, and the effectiveness of isolators in vibration control applications.

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Reference Data for KEK Block Isolators: Spring Constants and Load Allowances

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  1. July 25, ’03 KEK H. Yamaoka Reference Block

  2. Al SUS

  3. Isolator

  4. No. Spring Constant (N/mm) Allowable Load (N) Z Y X Z Y X EC4001 125 98 37 490 290 195 EC4002 235 180 69 1250 735 490 EC4003 340 235 93 1850 980 635 EC4004 490 325 115 2900 1450 830 EC4005 585 400 160 4100 2050 1400

  5. = acoswt TR: Transmissibility, TR < 0.1 A : Amplitude(Response) a : Amplitude(Input)

  6. ANSYS Calculation Z Fixed!! X Y

  7. k= 98N/mm k= 37N/mm Isolators Z k= 125N/mm X Y

  8. 1st: 62Hz 4th: 263Hz 2nd: 69Hz 5th: 461Hz 3rd: 103Hz 6th: 481Hz

  9. 1st: 4.8Hz 13th: 203Hz 2nd: 5.5Hz 15th: 341Hz 3rd: 13Hz 16th: 403Hz

  10. Spectrum Analysis Input: (X, Y, Z- directions)

  11. Results(Absolute value) X-Direction C R L Z Fixed Y X Y-Direction Z-Direction

  12. C R L X-Direction k= 98N/mm k= 37N/mm Z k= 125N/mm Y X Fixed Y-Direction Z-Direction

  13. Integration Amplitude X-Direction C R L Z Fixed Y X Z-Direction Y-Direction

  14. C R L X-Direction k= 98N/mm k= 37N/mm Z k= 125N/mm Y X Fixed Y-Direction Z-Direction

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