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Unformatted text preview: CE 332  Introduction to Moment Distribution Method What is Moment Distribution? • An approximate method for analyzing indeterminate beams and frames • One of the most notable advances in structural analysis prior to computer analysis developed in the 1930s by Hardy Cross • Nowadays used primarily for checking computer output and preliminary design • Relatively easy to learn because it is involves "cookbook" algorithms Basic Steps to the Method 1. Calculate Flexural Stiffness (k) for each member and Distribution Factors (DF) for each joint. 2. Apply a temporary, imaginary "clamp" to each joint of the structure. 3. Determine the "Fixed End Moments" (FEM's) acting on the locked joints due to loads applied to the structure. 4. Unlock the joints one at a time and distribute the unbalanced moments in proportion to the flexural stiffness of the members. 5. Continue locking and unlocking the joints until the joints have rotated to their approximate final positions....
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 Fall '10
 Hosteng
 Moment distribution method, Hardy Cross, Joint stiffness, fixed end moments, flexural stiffness

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