Accession Number : ADA017040

Title :   An Analytical Model for Determining Energy Dissipation in Dynamically Loaded Structures

Descriptive Note : Technical manuscript

Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL

Personal Author(s) : McNamara, John F ; Sharma, Sushil K

PDF Url : ADA017040

Report Date : Oct 1975

Pagination or Media Count : 37

Abstract : An analytical procedure is developed which predicts nonlinear cyclic structural response under large reversals of plastic strains. The structure is discretized by means of the finite element approximation, and the material behavior is simulated by a refined analytical model which describes the realistic hysteretic stress-strain curves of A36 steel under arbitrary cycles of load. In order to test the validity of this material model some comparisons are made with experimental values of the inelastic response of a simply supported beam under cyclic bending. The model is subsequently used in the dynamic analysis of a portal frame subjected to a selection portion of the El Centro NS earthquake acceleration record.

Descriptors :   *CONSTRUCTION MATERIALS, *DYNAMIC RESPONSE, DYNAMIC LOADS, EARTHQUAKE RESISTANT STRUCTURES, FINITE ELEMENT ANALYSIS, NONLINEAR SYSTEMS, STEEL, STRESS STRAIN RELATIONS

Subject Categories : Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE