Investigation of stress-strain state in the beam with preformed cracks

7th International Symposium Actual Problems of Computational Simulation in Civil Engineering

土木建筑工程;计算机科学

Adishchev, V.V.^1 ; Maltsev, V.V.^1

Novosibirsk State University of Architecture and Civil Engineering (Sibstrin), Leningradskaya 113, Novosibirsk

630008, Russia^1

关键词: Applied loads;    Edge effect;    Neutral line;    Normal stress;    Polarization optical method;    Stress strain state;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/456/1/012098/pdf
DOI  :  10.1088/1757-899X/456/1/012098

来源: IOP

【 摘 要 】

An experimental study of beams with preformed cracks using a polarization-optical method was carried out. Distributions of normal stresses in the vicinity of the crack were obtained. The zone of the edge effect is determined experimentally, as well as the character of the change in the neutral line near the crack. ANSYS is used to determine the stress-strain state in the vicinity of the crack. An original way of modeling a beam with preformed cracks was proposed. Numerical simulation data confirmed the experimentally obtained result on the independence of the length of the edge effect zone from the applied load.