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Cryostat System: FE Global Model. Outline: Introduction Boundary Conditions Load Cases Conclusions. A. Capriccioli Greifswald, 28.02.2007 Page 1 of 10. Introduction.

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Cryostat system fe global model

Cryostat System: FE Global Model

  • Outline:

  • Introduction

  • Boundary Conditions

  • Load Cases

  • Conclusions

A. Capriccioli Greifswald, 28.02.2007 Page 1 of 10


Cryostat system fe global model

Introduction

  • FE model using the 3-D structural Shell, Beam, Link, Solid and Contact elements was used to perform the global mechanical analysis of the whole 360° W7-X Load Assembly. It is constituted by:

  • - the Outer Vessel model (IGN rev. 12/2006: file “model-ov-2006-12-11.db”);

  • the Plasma Vessel model (IGN rev. 10/2006: file “gen81-1.db”);

  • the Machine Base model (ENEA rev. 11/2006: file “MB+2-Basements.db”).

A. Capriccioli Greifswald, 28.02.2007 Page 2 of 10


Cryostat system fe global model

The model consists of about 730,000 elements and nodes.

A. Capriccioli Greifswald, 09.03.2005 Page 3 of 10


Cryostat system fe global model

Boundary Conditions

  • Plasma Vessel (PV) – Outer Vessel (OV):

    - the Bellows of all the Ports (type 1 and 2) are described with “4 Beam elements” groups;

    - the horizontal forces generated by the Plasma Vessel’s fine adjustment and thermal expansion are transmitted to the OV proper AEU ports and ACS.

  • Plasma Vessel – Machine Base (MB):

    - the vertical and horizontal forces acting on the PV are supported by appropriate Beam and Contact elements between the MB and the PV itself.

  • Outer Vessel – Machine Base:

    - the OV legs are fixed to the MB Plats (nodal UX, UY, UZ degree of freedom are coupled).

A. Capriccioli Greifswald, 28.02.2007 Page 4 of 10


Cryostat system fe global model

A. Capriccioli Greifswald, 28.02.2007 Page 5 of 10


Cryostat system fe global model

PV fine adjustment (radial) Greifswald, 28.02.2007 Page 5 of 10

PV fine adjustment (toroidal)

A. Capriccioli Greifswald, 09.03.2005 Page 6 of 10


Cryostat system fe global model

A. Capriccioli Greifswald, 28.02.2007 Page 7 of 10


Cryostat system fe global model

PV vertical displacements Greifswald, 28.02.2007 Page 7 of 10

OV-MB nodal coupling

A. Capriccioli Greifswald, 28.02.2007 Page 8 of 10


Cryostat system fe global model

Load Cases Greifswald, 28.02.2007 Page 7 of 10

A. Capriccioli Greifswald, 28.02.2007 Page 9 of 10


Cryostat system fe global model

Conclusions Greifswald, 28.02.2007 Page 7 of 10

A detailed analysis is reported in the document “01_REPORT - Global Model Cryostat System - Model and Results.doc”.

In this event it is possible to summarize that no problems seem to appear for all the analyzed load cases.

A. Capriccioli Greifswald, 28.02.2007 Page 10 of 10