scholarly journals The Structural Behavior of Serrated Cast-In Anchor Channels - A Numerical Study on the Longitudinal Loading Close to the Edge

2016 ◽  
Author(s):  
Georg Karl Kocur ◽  
Eleni Chatzi ◽  
Frank Häusler
Keyword(s):  
Numerical Study ◽  
Structural Behavior ◽  
Longitudinal Loading

Experimental and numerical study on thermal-structural behavior of steel portal frames in real fires

2018 ◽  
Vol 98 ◽  
pp. 48-62 ◽  
Author(s):  
Guobiao Lou ◽  
Chenghao Wang ◽  
Jian Jiang ◽  
Yaqiang Jiang ◽  
Liangwei Wang ◽  
...  
Keyword(s):  
Numerical Study ◽  
Structural Behavior

Experimental and Numerical Study of Damaged Tubular Members Under Lateral Loads

2002 ◽  
Author(s):  
Claudio Ruggieri ◽  
Jose´ Alfredo Ferrari
Keyword(s):  
Oil And Gas ◽  
Numerical Solutions ◽  
Production Systems ◽  
Numerical Study ◽  
Structural Response ◽  
Local Deformation ◽  
Structural Behavior ◽  
Lateral Loads ◽  
Nuclear Facilities ◽  
Linear Behavior

Structural behavior of dent damaged tubular members by local indentation remains a key issue for the safety and failure assessment of critical structures, including marine and nuclear facilities, oil and gas pipelines. This failure mode most often arises from very large localized plastic deformations caused mainly by excessive or accidental loads such as, for example, during the collision of adjacent risers in deepwater floating production systems (FPS). The complex interaction between the local deformation in the dented region and global bending of the tubular member may severely reduce the plastic collapse load while, at the same time, strongly affecting its load-deflection behavior. This study presents an experimental and numerical investigation of the structural behavior of a dented tubular member under lateral load which is applicable to marine risers. Experimental load-deflection curves measured using a 4 1/2″ O.D. (114 mm) API N80 pipe (580 MPa yield stress) with varying length characterize the plastic response during local indentation and global bending. 3D finite element models are employed to generate numerical solutions describing the large deformation, non-linear behavior for the tested pipes. The experimental results agree well with the numerical results. The analyses provide further insight into the structural response of tubular members and risers which dent damage effects.

scholarly journals A Numerical Investigation on the Structural Behavior of Deficient Steel Frames Strengthened using CFRP Composite

2018 ◽  
Vol 20 (1) ◽  
pp. 1 ◽  
Author(s):  
Amir Hamzah Keykha
Keyword(s):  
Numerical Study ◽  
Load Capacity ◽  
Steel Frames ◽  
Steel Structures ◽  
Independent Study ◽  
Fiber Reinforced Polymers ◽  
Structural Behavior ◽  
Ultimate Load Capacity ◽  
Hollow Section ◽  
Cfrp Composite

Carbon fiber reinforced polymers (CFRP) is one of the materials that is used to strengthen steel structures. Most studies on CFRP strengthening steel on structures have been done on beams and steel columns. No independent study has studied the effect of CFRP strengthening on the structural behavior of steel frames having initial deficiency.The deficiency in steel structures may be created due to the errors caused by construction and others.This study aims to carry out a numerical study on the efficiency of CFRP sheet on strengthening square hollow section (SHS) steel frames having initial deficiency. Seven specimens, five of which were strengthened using CFRP sheets, were analyzed. ANSYS software was used to analyze the SHS steel frames. The results showed that the coverage length, the width, and the number of CFRP layers have a significant effect on increasing and recovering the ultimate load capacity of the SHS steel frames having initial deficiency.

A Numerical Study on the Structural Behavior of the Connection System between the RC and SC Structures

2016 ◽  
Vol 16 (5) ◽  
pp. 231-237
Author(s):  
Deokwoo Nam ◽  
◽  
Kapsun Kim ◽  
Jongbo Lee ◽  
Sungheum Han ◽  
...  
Keyword(s):  
Numerical Study ◽  
Structural Behavior ◽  
Connection System

NUMERICAL ANALYSIS OF SLENDER STEEL SHEAR PANELS FOR ASSESSING DESIGN FORMULAS

2007 ◽  
Vol 07 (02) ◽  
pp. 273-294 ◽  
Author(s):  
A. FORMISANO ◽  
F. M. MAZZOLANI ◽  
GIANFRANCO DE MATTEIS
Keyword(s):  
Passive Control ◽  
Numerical Study ◽  
Shear Walls ◽  
Steel Plates ◽  
Structural Behavior ◽  
Steel Plate Shear Walls ◽  
Framed Structures ◽  
The North ◽  
Control Devices ◽  
Steel Panels

In the framework of passive control devices for the seismic protection of new and existing buildings, large attention is getting more focused on Steel Plate Shear Walls (SPSW). Such a system, which is characterized by the use of slender steel panels, has been largely adopted in the last few years both in the North America and Japan. The structural behavior of slender shear walls is strongly conditioned by buckling phenomena, which may have a significant influence also on the ultimate strength of the system, despite the development of stable post-critical behavior due to tension field mechanism. In order to assess the influence of the geometry on the structural behavior of shear plates, in this paper, the theoretical behavior of steel panels in shear, based on existing simplified methodologies (PFI method and strip model theory) is analyzed and then compared to the results obtained by an extensive numerical study carried out by means of accurate finite element models. The comparison between theoretical and numerical results has been developed with reference to different values of the thickness and by varying the aspect ratio of the plate. In addition, the influence of intermediate stiffeners is investigated. On the whole, the obtained results provide useful information for the correct design of slender steel plates in shear to be used as stiffening and strengthening devices in new and existing framed structures.

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