Finite Element Model Development with LS-PrePost

Currently in the TSC, nonlinear finite element analyses (FEA) of concrete dams are completed to better understand the nonlinear behavior of such structures. The process of FE model development for a nonlinear model is very labor intensive and time consuming; some projects last multiple years and absorb Reclamation's limited personnel resources.

The quality of the finite element (FE) mesh is a key factor affecting the accuracy of FE analysis. This research investigates a new method of developing FE models using 3D AutoCAD and LSDYNA PrePost (LS-PrePost) as an alternative program to use. The tasks included in this research are to develop a new procedure for building FE models using 3D AutoCAD and LS-PrePost, develop a procedure for inputting the terrain topography into FE models using AutoCAD Civil 3D, document the modeling procedures of using AutoCAD and LS-PrePost in a report, evaluate the ability for local mesh refinement, and describe the model self-check capacity using LS-PrePost.