Evaluation of NASA Structural Analysis (NASTRAN) to Predict the Dynamic Response of Reinforced Concrete
Final rept. 27 May-5 Aug 1981
SOUTHEASTERN CENTER FOR ELECTRICAL ENGINEERING EDUCATION INC ST CLOUD FL
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This report evaluates the ability of the finite element program, NASTRAN, to analyze reinforced concrete structures under dynamic loads. Experimental data from a quarter scale model test of an underground shelter was used to validate the computer projections. NASTRAN is a general-purpose structural analysis program containing several types of finite element and several displacement analysis approaches. For this study five different computer models for reinforced concrete were used. The models were composed of the following elements 1 Plate membrane elements, 2 Plate membrane and rod elements, 3 Plate-bending elements, 4 Plate-bending-membrane elements, 5 Plate-bending-membrane and beam elements, Static Analysis and Transient Analysis approaches were used to evaluate the computer model. Favorable results were obtained for the plate membrane and rod element model using the Transient Analysis Approach. Strain in the reinforcing rods, time to maximum strain, and time to return to zero strain were used to compare the experimental data to the computer prediction.
- Structural Engineering and Building Technology