check Giuseppe Gallo Fermilab 17 Dec 2019 FEA model Mesh and BCs - PowerPoint PPT Presentation

APA shipping frame check Giuseppe Gallo Fermilab 17 Dec 2019

FEA model – Mesh and BCs FEA model Only Brick element – 30 mm size All the connections between elements are made through bonded contacts 2

FEA model – Mesh and BCs Constraint applied to the upper anchor and gravity load (2x g) 3

FEA model – Mesh and BCs Top APA – COG and Total mass 554.8kg 4

FEA model – Mesh and BCs Top APA – Reaction forces FEA sub-model of APA and Mounting points Reaction forces produced by the sub-model 5

FEA model – Mesh and BCs Bottom APA – COG and Total mass 567.5kg 6

FEA model – Mesh and BCs Bottom APA – Reaction forces FEA sub-model of APA and Mounting points Reaction forces produced by the sub-model 7

Case A – Lifting points heavily shifted from COG – (2 x gravity) Utot Ux Uy Uz 8

Case A – Lifting points heavily shifted from COG – (2 x gravity) V-Mises Stresses Local mesh need to be revised to refine the stress peaks. Current stresses value can be considered as indicative value only. 9

Case B – Lifting point almost in line to the COG – (1 x gravity) Utot Ux Uy Uz 10

Case B – Lifting point almost in line to the COG – (1 x gravity) V-Mises Stresses Local mesh need to be revised to refine the stress peaks. Current stresses value can be considered as indicative value only. 11

Case C – Lifting point almost in line to the COG with symmetric mass value – (2 x gravity) Utot Ux Uy Uz 12

Case B – Lifting point almost in line to the COG – (2 x gravity) V-Mises Stresses Local mesh need to be revised to refine the stress peaks. Current stresses value can be considered as indicative value only. 13

Disclosure Statement All the technical aspects and information discussed in this presentation have the scope to provide support and validation to the structural FEA model provided by UK group. 14