44. Recording inter-nodal loading

Questions and discussion for this lecture live here. Fire away by hitting Reply below :fire:

Hi Dr Sean

  • I am wondering why we use simple formula ‘wl^2/12’ to calculate ‘Moment’ for inter-nodal loading. We solved stiffness matrix equations to calculate ‘Moment’ at primary nodes.
  • Locking the memeber with fixed-ends for inter-nodal loading is kind of standard procedure?


We use this formula because we’re calculating the fixed-end moment that the inter-nodal loading will apply at each end of the loaded element. The stiffness method can only accommodate loading at a nodal point - so this is required when we have loading between nodes that we want to consider - otherwise the influence of this loading would not be captured.