CRACKING AND FAILURE BEHAVIOR OF CONCRETE TUNNEL LINING PREDICTED BY SMEARED CRACK MODEL

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Evaluating Cracking In Concrete

تحلیل غیرخطی دینامیکی دیوار های برشی بتن مسلح با دیدگاه مکانیک آسیب و احتساب اثرات پیوستگی- لغزش

In this research, nonlinear dynamic analysis of concrete shear wall using a new nonlinear model based on damage mechanics approach and considering bond slip effects is presented. Nonlinear behavior of concrete is modeled by a rotational smeared crack model using damage mechanics approach. The proposed model considers major characteristics of the concrete subjected to two and three dimensional l...

Cracking of Prestressed Concrete Containments

Degradation of Cracked Subway Tunnel Structure by Crack Propagation and Leakage − Influence Analysis on Subway Tunnel Lining Safety Bring by Defects