scholarly journals Effect of Nano Clay and Marble Powder Waste as a Hybrid Addition on the Behavior of Normal and High Strength RC Columns Subjected to Axial Compressive Loading

2021 ◽  
Vol 6 (3) ◽  
pp. 367-384
Author(s):  
Mostafa Ahmed Mahdi ◽  
Ahmed Hassan Ghallab ◽  
El-Saaid Ibrahim Zaki ◽  
Ahmed Sayed Elmannaey
Keyword(s):  
Compressive Loading ◽  
High Strength ◽  
Rc Columns ◽  
Nano Clay ◽  
Marble Powder

scholarly journals ANALYTICAL STUDY OF BEHAVIOR OF COLD FORMED STEEL SECTIONS WITH AND WITHOUT PERFORATION UNDER COMPRESSIVE LOADING

2021 ◽  
Vol 5 (9) ◽  
Author(s):  
Majahar M. Baraskar ◽  
Pranil Shetake ◽  
Prof. V. M Bogar ◽  
Dr. Y. M Ghugal
Keyword(s):  
Construction Industry ◽  
Compressive Loading ◽  
Weight Ratio ◽  
High Strength ◽  
Cross Sectional Area ◽  
Sectional Area ◽  
Cross Sectional ◽  
Steel Sections ◽  
Cold Formed Steel ◽  
Lower Temperature

Steel is used in construction industry due to its hardness and tensile strength. Cold formed steel is type of steel which is manufactured at lower temperature. Cold form steel became more popular in twentieth century in construction industry due to its high strength to weight ratio and post-buckling strength. The purpose of this study is to study the behavior of cold-formed steel sections of different shapes but of same cross sectional area for compressive loading. Effect of lips within same cross sectional area, effect of perforation and shape stiffener is evaluated on different sections as channel section, Z section and hat section. Eigen value buckling analysis was carried out to on twelve different models to obtain the buckling load and failure pattern. ANSYS WORKBENCH software was used for numerical simulation of sections. I.S. 801:1975 has been taken under consideration wherever required. Based upon the results, optimum section in each of cases as with lips, without lips and perforated amongst all three sections is suggested. Effect of shape stiffeners provided by previous researcher P. Manikandan on solid sections is evaluated to check its suitability with perforated sections.

Preloaded RC columns strengthened with high-strength concrete jackets under uniaxial compression

2007 ◽  
Vol 41 (7) ◽  
pp. 1251-1262 ◽  
Author(s):  
Adilson Roberto Takeuti ◽  
Joao Bento de Hanai ◽  
Amir Mirmiran
Keyword(s):  
Uniaxial Compression ◽  
High Strength Concrete ◽  
High Strength ◽  
Rc Columns ◽  
Strength Concrete

PROGRESSIVE DAMAGE FAILURE ANALYSIS OF POST-BUCKLED COMPOSITE SINGLE-STRINGER PANEL WITH TEFLON INSERTS

2021 ◽  
Author(s):  
VIJAY K. GOYAL ◽  
AUSTIN PENNINGTON ◽  
JASON ACTION
Keyword(s):  
Experimental Data ◽  
Composite Structures ◽  
Laminated Composites ◽  
Compressive Loading ◽  
Weight Ratio ◽  
High Strength ◽  
Material Model ◽  
Stiffened Panels ◽  
Damage Initiation ◽  
Critical Aspects

The high strength-to-weight and stiffness-to-weight ratio materials, such as laminated composites, are advantageous for modern aircraft. Laminated composites with initial flaws are susceptible to delamination under buckling loads. PDA tools help enhance the industry’s understanding of the mechanisms for damage initiation and growth in composite structures while assisting in the design, analysis, and sustainment methods of these composite structures. The global-local modeling approach for the single-stringer post-buckled panel was evaluated through this effort, using Teflon inserts to simulate the defect of damage during manufacturing. This understanding is essential for designing the post-buckled structure, reducing weight while predicting damage initiation location, and addressing a potential design review for future aircraft repairs. In this work, the initial damage was captured with Teflon inserts as the starting configuration; and any reference to the damage initiation refers to any damage beyond the “initial unbonded region.” The effort aims to develop, evaluate, and enhance methods to predict damage initiation and progression and the failure of post-buckled hat-stiffened panels using multiple Abaqus FEA Virtual Crack Closure Technique (VCCT) definitions. Validation of the PDA using the VCCT material model was performed on a large single-stringer panel subjected to compressive loading. The compressive loading of the panel caused the skin to buckle before any damage began to occur locally. In addition, comparisons are made for critical aspects of the damage morphology, such as a growth pattern that included delamination from the skin-stiffener interface to the skin and ply interfaces. When compared against the experimental data produced through the NASA Advanced Composites Project (ACP), the present model captured damage migration from one surface to another, and model validations were ~5% of the experimental data.

Size effect tests of high-strength RC columns under eccentric loading

2016 ◽  
Vol 126 ◽  
pp. 78-91 ◽  
Author(s):  
Chengshun Xu ◽  
Liu Jin ◽  
Zixing Ding ◽  
Dong Li ◽  
Xiuli Du
Keyword(s):  
Size Effect ◽  
High Strength ◽  
Rc Columns

scholarly journals Mechanical and Durability Characteristics of Marble Powder Based High Strength Concrete

2018 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Raghunath P.N ◽  
Suguna K ◽  
Karthick J ◽  
SarathKumar B
Keyword(s):  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete ◽  
Marble Powder
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