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Status report AHCAL Mechanics Karsten Gadow CALICE Collaboration Meeting KEK, 19.04.2015 Studies of AHCAL absorber structure stability.

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Presentation on theme: "Status report AHCAL Mechanics Karsten Gadow CALICE Collaboration Meeting KEK, 19.04.2015 Studies of AHCAL absorber structure stability."— Presentation transcript:

1 status report AHCAL Mechanics Karsten Gadow CALICE Collaboration Meeting KEK, 19.04.2015 Studies of AHCAL absorber structure stability

2 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 2 AHCAL Mechanics status report outline Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

3 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 3 AHCAL Mechanics status report Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

4 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 4 AHCAL Mechanics FE Model Parameters parameters for submodule validations: Mesh Type shell bodies for all plates solid bodies for transportation and assembly brackets Mesh Statistics ~ 575.000 nodes, 295.000 elements refined local sub-models: 1.5M nodes, 870k elements Contacts bonded contacts (all DOF fixed) on lines and faces of shell bodies bolts modeled as spring elements in refined sub-model in case of high load concentrations

5 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 5 AHCAL submodule case 0 absorber assembly and active layer integration How to support the submodule during assembly and active layer integration ?

6 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 6 AHCAL submodule case 0.1 absorber assembly and active layer integration case 0.1: support on the side plate

7 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 7 AHCAL submodule case 0.1 absorber assembly and active layer integration

8 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 8 AHCAL submodule case 0.2 absorber assembly and active layer integration case 0.2: support on absorber plate front edge

9 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 9 AHCAL submodule case 0.2 absorber assembly and active layer integration

10 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 10 AHCAL submodule case 0.2 absorber assembly and active layer integration

11 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 11 AHCAL submodule case 0.3 absorber assembly and active layer integration case 0.3: support on absorber plate 75 mm from side edge

12 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 12 AHCAL submodule case 0.3 absorber assembly and active layer integration

13 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 13 AHCAL submodule case 0.3 absorber assembly and active layer integration

14 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 14 AHCAL submodule case 0 absorber assembly and active layer integration conclusion: case 0.1 will is the best way to support the submodule supporting the submodule according case 0.2 and 0.3 will be not safe for the sensitive layers due to the local deformation of the plates to be sure, that the submodule stays on the side walls, we have to foresee an overlap of 3 mm from the edge of the side plates to the first absorber plate surface

15 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 15 AHCAL Mechanics status report Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

16 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 16 AHCAL submodule case 1 submodule transportation 10x2 M10 screws per bracket and fixed at layer 37 to 46 single crane hook

17 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 17 AHCAL submodule case 1 submodule transportation steel ropes for crane: modeled as 20mm dia. beam elements to central fixed point

18 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 18 AHCAL submodule case 1 submodule transportation

19 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 19 AHCAL submodule case 1 submodule transportation

20 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 20 AHCAL submodule case 1 submodule transportation

21 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 21 AHCAL submodule case 1 submodule transportation conclusion: the transportation with one hook is possible without a risk to destroy the absorber stack the deformation of the stack is tolerable with the current design of the sensitive layer housings the lifting device needs a special investigation

22 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 22 AHCAL Mechanics status report Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

23 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 23 AHCAL submodule case 2 submodule installation installation of submodules in front of the cryostat by crane sub module connection by plates from the front and back side

24 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 24 AHCAL submodule case 2 submodule installation 2 x 18 t capacity operation with 2 hooks precise motor controlled turning adaptation for submodules with sensitive layers 18 t lifting and turning tool for AHCAL barrel absorber sub-modules available

25 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 25 AHCAL submodule case 2 submodule installation 10x2 M10 screws per bracket layer 27 to 37 2 crane hooks submodule validation case 2.0: 0° case 2.1: 22,5° case 2.2: 45° case 2.3: 67,5° case 2.4: 90° case 2.5: 112,5° case 2.6: 135° case 2.7: 157,5° case 2.8: 180° rotation point in gravity center

26 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 26 AHCAL submodule case 2 submodule installation lifting beam for rotation and assembly: 4x100mm dia. beam elements to two fixed points

27 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 27 AHCAL submodule case 2 submodule installation case 2.0

28 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 28 AHCAL submodule case 2 submodule installation max. equivalent stress MPa ° rotation

29 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 29 AHCAL submodule case 2 submodule installation conclusion : the simulated behavior of the submodule during the rotation is in a save condition the connection to the turning tool has to be investigated more carefully during the simulation it turned out, that the connection plates of the submodules has to be modified for installation reasons

30 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 30 AHCAL Mechanics status report Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

31 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 31 AHCAL Mechanics absorber structure validation (static) gravity + 1g realistic support and displacements installed ECAL masses

32 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 32 AHCAL Mechanics absorber structure validation (static) 10,0 mm maximum deformation 50 times exaltation graphic

33 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 33 AHCAL Mechanics absorber structure validation (static) ~360 N/mm² maximum tension 50 times exaltation graphic

34 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 34 AHCAL Mechanics absorber structure validation (static) conclusion: the static model is understood all values of stress and deformation are in a acceptable (safe) range

35 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 35 AHCAL Mechanics status report Studies of AHCAL absorber structure stability Submodule assembly and active layer integration Submodule transportation Submodule installation Absorber structure validation (static) Absorber structure validation (dynamic)

36 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 36 AHCAL Mechanics absorber structure (dynamic) Absorber structure validation (earth quake) not enough detailed Information for realistic simulation !

37 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 37 AHCAL Mechanics absorber structure (dynamic) 3 Hz -> swinging structure

38 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 38 AHCAL Mechanics absorber structure (dynamic) 7.6 Hz -> swinging submodules

39 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 39 AHCAL Mechanics absorber structure (dynamic) 24,5 Hz -> swinging interconnections

40 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 40 AHCAL Mechanics absorber structure (dynamic) 45 Hz -> swinging plates

41 Karsten Gadow | CALICE Collaboration Meeting | 19.04.2015 | Page 41 AHCAL Mechanics absorber structure validation (dynamic) conclusion: start with the modal analyses for the AHCAL absorber structure only the absorber plates starts to swing in a long frequency range the calculation time for single solutions are to long, we must think about the simplification of the 3D model we are far away to understand the overall behavior of the model the safe way would be, to validate the calculations with real structures

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