Development of a strain-smoothed three-node triangular flat shell element with drilling degrees of freedom
Our objective is to improve the performance of the 18DOF triangular shell element. The ANDES formulation is adopted for membrane component. In order to enhance the element behavior further, a strain smoothing technique is applied. To avoid the drill rotation locking, a simple modification factor is introduced. The proposed element is validated using various benchmark problems.
drill rotation locking assumed natural deviatoric strain (andes) drilling freedom edge-based strain smoothing