ra = 0.02;
rb = 0.07;
hauteur = 0.15;
msh = 0.0075;
Point(1) = {0,0,0,msh};
Point(2) = {0,ra,0,msh};
Point(3) = {ra,0,0,msh};
Point(4) = {0,-ra,0,msh};
Point(5) = {-ra,0,0,msh};
Point(6) = {0,rb,0,msh};
Point(7) = {rb,0,0,msh};
Point(8) = {0,-rb,0,msh};
Point(9) = {-rb,0,0,msh};
Circle(1) = {5,1,2};
Circle(2) = {2,1,3};
Circle(3) = {3,1,4};
Circle(4) = {4,1,5};
Circle(5) = {6,1,7};
Circle(6) = {7,1,8};
Circle(7) = {8,1,9};
Circle(8) = {9,1,6};
Line Loop(9) = {2,3,4,1};
Plane Surface(10) = {9};
Line Loop(11) = {5,6,7,8};
Plane Surface(12) = {11,9};
Extrude Line {5, {0.0,0.0,hauteur}};
Extrude Line {8, {0.0,0.0,hauteur}};
Extrude Line {7, {0.0,0.0,hauteur}};
Extrude Line {6, {0.0,0.0,hauteur}};
Extrude Line {3, {0.0,0.0,hauteur}};
Extrude Line {2, {0.0,0.0,hauteur}};
Extrude Line {1, {0.0,0.0,hauteur}};
Extrude Line {4, {0.0,0.0,hauteur}};
Line Loop(45) = {41,37,33,29};
Plane Surface(46) = {45};
Line Loop(47) = {21,17,13,25};
Plane Surface(48) = {47,45};
Surface Loop(49) = {12,-16,-28,-24,-20,-48,32,44,40,36};
Volume(50) = {49};
Physical Surface(51) = {48};
Physical Surface(52) = {46};
Physical Surface(53) = {20,24,28,16};
Physical Surface(54) = {40,44,32,36};
Physical Surface(55) = {12};
Physical Surface(56) = {10};
Physical Volume(100) = {50};
Physical Line(105) = {31};
Physical Line(106) = {22};
Physical Surface(107) = {20,24,28,16,10,12};
Physical Surface(108) = {46,32,40,36,44,10};
