TY  - JOUR
AU  - Hussein, Assal Tehseen 
PY  - 2011
TI  - Elastic-Plastic Non Linear Behaviors of Suddenly Loaded Structures
JF  - American Journal of Engineering and Applied Sciences
VL  - 4
IS  - 1
DO  - 10.3844/ajeassp.2011.89.92
UR  - https://thescipub.com/abstract/ajeassp.2011.89.92
AB  - Problem statement: The adaptively shifted integration technique was applied to the elasticplastic
analysis of framed structures under dynamic loading. Approach: This study used analysis of
linear beam element, the reshifting of the of the integration points in the element is conducted in order
to attain higher accuracy. Results: In nonlinear finite element analysis by the ASI technique, the
highest computational efficiency has been achieved by shifting the numerical integration points for
evaluation of stiffness matrices of linear Timoshenko beam element. A computer program has been
Written by VBASIC for solve the problem of the steel frame, results of numerical examples
demonstrate the validity of the computer program and study many parametric study, such as Time step
and Mass of the structure. Conclusion/Recommendations: In the elastic analysis there is no
distinction between the ASI technique and the conventional finite element method, but for elasticplastic
nonlinear analysis under dynamic load Adaptive Shifted Integration (ASI) technique is capable
of predicting with reasonable accuracy the behavior of steel frame structures.