FEnotes_part3

FEnotes_part3 - Truss Element cont. o The next step is to...

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1 Truss Element cont. o The next step is to assemble elements to form a structure. o The best method to show the process is through an example: 1. Label node numbers 2. Label global displacements 3. Label element numbers and orientation ( )
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2 4. Construct table Element # Start node End node 1 2 3 3 (alternate) 5. Element stiffness matrices (local coordinates) 6. Element stiffness matrices (global coordinates) 7. Introduce submatrix notation Element 1   1 1/ 2 AE k L      1 2 3 1 1 1 1 1 1 1 1 1 1 1 1 2 AE AE AE k k k LL L                   12 3 1 0 1 0 0000 1 0 1 0 2 AE AE kk AE k L 
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3 Element 2   2 1/ 2 AE k L     
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FEnotes_part3 - Truss Element cont. o The next step is to...

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