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Numerical Analysis of Dowel-Socket Structure in TMSR Graphite Core

Numerical Analysis of Dowel-Socket Structure in TMSR Graphite Core. Fan Huiqing, Cai Maoyuan, Huang Chaochao, Derek Tsang. A. B. C. Aims. Results & Discussion. Model & Boundary Conditions. Contents. A. Aims.

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Numerical Analysis of Dowel-Socket Structure in TMSR Graphite Core

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  1. Numerical Analysis of Dowel-Socket Structure in TMSR Graphite Core Fan Huiqing, Cai Maoyuan, Huang Chaochao, Derek Tsang

  2. A B C Aims Results & Discussion Model & Boundary Conditions Contents

  3. A Aims To study the effect of Fillet Radius, Diameter/Length/Position of dowel on the dowel-socket structure. The Numerical Analysis results can provide designing basis for the static experiment of graphite bricks.

  4. TMSR graphite brick

  5. B Model & Boundary Conditions ϕ 90 Design of Graphite Model units: mm Model of Dowel-Socket structure

  6. Parameter considered in Dowel-Socket numerical analysis： • Length of Dowel • Diameter of Dowel-Socket • Position of Socket • Fillet Radius

  7. Table of Model Parameter Model Parameter Origin Design of Dowel/Socket ϕ 90 Position of Dowel/Socket

  8. Materials Parameter of Graphite

  9. Constraint Type Upper Brick Lower Brick Diagram of Constraint

  10. Loading Type Upper Brick Lower Brick Diagram of Loading

  11. Analysis of Grid Density • Results of Model 1 • Choose 16.5*104 Grid Quantity Mesh Generation of Upper Brick Mesh Generation of Dowel Mesh Generation of Lower Brick

  12. weakest-member? Stress Distribution of Upper Brick Stress Distribution of Lower Brick Stress Distribution of Dowel 1. Max Principal Stress located at the bottom of socket in the lower brick. 2. Max Principal Stress Distribution in Upper Surface of Lower Brick was also considered

  13. C Results & Discussion Max Principal Stress Distribution in Upper Surface of Lower Brick Length Analysis Force Length of Dowel80mm Length of Dowel100mm Length of Dowel60mm Limited change in Max Principal Stress Distribution in Upper Surface of Lower Brick.

  14. Max Principal Stress Distribution in Upper Surface of Lower Brick Diameter Analysis Diameter of Dowel80mm Diameter of Dowel90mm Diameter of Dowel100mm Smaller Diameter, Bigger Max Principal Stress.

  15. Max Principal Stress Distribution in Upper Surface of Lower Brick Position Analysis x，y x+5，y+5 x-5，y-5 Limited change in Max Principal Stress Distribution in Upper Surface of Lower Brick.

  16. Max Principal Stress Distribution of Lower Brick Length Analysis Length of Dowel80mm Length of Dowel100mm Length of Dowel60mm Longer Length, Lower Max Principal Stress.

  17. Max Principal Stress Distribution of Lower Brick Diameter Analysis Diameter of Dowel80mm Diameter of Dowel90mm Diameter of Dowel100mm Limited change in Max Principal Stress Distribution of Lower Brick.

  18. Max Principal Stress Distribution of Lower Brick Position Analysis x，y x+5，y+5 x-5，y-5 Limited change in Max Principal Stress Distribution of Lower Brick.

  19. Max Principal Stress Distribution of Lower Brick Corner Analysis Fillet Radius 1.5 mm Fillet Radius 2.5 mm Fillet Radius 3.5 mm Larger Corner radius, Lower Max Principal Stress.

  20. Stress Results

  21. Length of Dowel/Socket Analysis Longer Length, Lower Max Principal Stress in the Lower Brick but Limited change in Upper Surface of Lower Brick. The two curves tend to same value in longer length.

  22. Why? Force Transformation Length h2 h1 Different Angle Tensile Stress Longer length leads to small opening angle, which leads to smaller strain. Smaller strain results in lower Max Principal Stress.

  23. Conclusion Max Principal Stress located at the corner of socket-bottom in the lower brick. Length of Dowel/Socket and Fillet Radius have important implication for Max Principal Stress of graphite bricks. The Position and Diameter of Dowel/Socket show limited effect on Max Principal Stress of graphite Brick

  24. Thanks!

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