50-using…

cohesive_strait_3D_structured.geo
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			h = 0.5;

			Point(1) = { 1, 1, -.5, h};
			Point(2) = {-1, 1, -.5, h};
			Point(3) = {-1,-1, -.5, h};
			Point(4) = { 1,-1, -.5, h};

			Point(5) = {-1, 0, -.5, h};
			Point(6) = { 1, 0, -.5, h};

			Line(1) = {1, 2};
			Line(2) = {2, 5};
			Line(3) = {5, 6};
			Line(4) = {6, 1};

			Line(5) = {5, 3};
			Line(6) = {3, 4};
			Line(7) = {4, 6};

			Line Loop(1) = {1, 2, 3, 4};
			Line Loop(2) = {-3, 5, 6, 7};
			Plane Surface(1) = {1};
			Plane Surface(2) = {2};
			Extrude {0, 0, 1} {
			Surface{1}; Surface{2};
			}

			Physical Surface("fixed") = {46};
			Physical Surface("insertion") = {24};
			Physical Surface("loading") = {16};
			Physical Surface("sides") = {1, 20, 29, 28, 50, 2, 51, 42};

			Physical Volume("body") = {1, 2};

			Transfinite Surface "*";
			Transfinite Volume "*";

			Recombine Surface "*";

			Mesh.SecondOrderIncomplete = 1;