scholarly journals Ferrocement as a Retrofitting Material for Beam Column Joint

Author(s):  
Twinkle Yadav

Abstract: Structure safety is of utmost importance in modern days. Now- a- days ferrocement is gaining popularity as a retrofitting material due to ease of its application and availability. The most critical location of failure in any structure is beam column joint. The aim of this paper is to analyse the effect of retrofitting on beam column joint using ferrocement as a retrofitting material. Square wire mesh and triangular wire mesh was used for retrofitting beam column joint. Beam column joint is designed using ductile detailing code IS 13930:2016. Axial and reverse cyclic displacement load is applied on the specimen. Further unstrengthen and strengthened specimen were analysed using ANSYS software. A comparative study was done and it was concluded that after retrofitting, the specimen shows considerable decrease in total deformation. It shows that retrofitted beam column joint was more stable than the unstrengthened beam column joint. So, to increase the serviceability of any structure it is recommended to retrofit the structure. Keywords: BCJ, ferrocement, wire mesh, retrofitting

During the serviceable life of R.C.C structures they are found to show evidence of distress due to various reasons. To bring such structures back to their functional/serviceable condition these structures need urgent attention and enquiry for finding out reasons of distress along with appropriate remedial treatments so as to increase serviceable life of such structures and bring them back to their functional use. So the process of retrofitting involves upgrading and enhancing the strength of deficient structures and their components. Safety of life is a priority issue to be addressed in process of retrofitting. For preventing injury and death of occupants and for preventing damage to structural components and collapse of structure as a whole, some retrofitting techniques try to deal with the issue to avoid damage. As a retrofitting technique, ferrocement technique is one of commonly used procedure of improving strength which is due to their good durability, less cost, easy availability and ease in application with requirement of intricate formwork. Application of ferrocement can be quickly done on the damaged structural elements without any requirements of chemical bonding agents. Also the ferrocement application requires less skill labour in comparison to other retrofit solutions available these days. Ferrocement is light in weight, easy to construct & have low self weight which is why it is preferred to other techniques of retrofitting. It has higher tensile strength then R.C.C. Also the thickness of ferrocement is a fraction of thickness of R.C.C. structural elements which makes it a complementary material for prefabricated structures. In the present study six R.C.C. Beam column joint specimens were casted. Two controlled specimens were initially stressed to ultimate load (100% damage) and other four specimens are stressed to prefixed percentages of ultimate load. All six specimens were then retrofitted using ferrocement for upgrading the strength of Beam column joints in flexure and shear. Chicken wire mesh is wrapped all around the specimen. From the study it is observed that retrofitted specimens has shown considerable decrease in deflection if we compare them to controlled specimens. Also the percentage decrease in deflection for specimens subjected to 75% and 50% of ultimate loads is considerably higher to those specimens which are subjected to 100% damage i.e. ultimate load.


Author(s):  
M. Amarnath ◽  
K. Sriram Prasad ◽  
Jeevan Babyloni

Every All-Terrain vehicle right now uses independent suspension system which consists of double wishbones connected to all the tires. As All-Terrain vehicles generally operated on different road conditions it is an absolute necessity to have a robust design of wish bones. A good deformation rate and good FOS determines how good a design. In this study we have designed three types of upper wishbones in Solid Works whose suspension geometry based on wheel base, track width, roll center and pith center of the vehicle is validated in LOTUS software and the following graphs of camber, castor, toe, kingpin inclination are obtained. Linear static structural analysis is performed on all the three types designed in Ansys software and total deformation rate, equivalent stresses generated and FOS is calculated and the based on the results the best design is used for the vehicle. The design provided greater suspension travel, reducing the un-sprung mass of the vehicle, maximizing the performance of the suspension system of the vehicle and better handling of vehicle while cornering. The design is used in SAE BAJA 2020 competition Conducted in Chitkara University Punjab.


2011 ◽  
Vol 71-78 ◽  
pp. 3280-3283
Author(s):  
Xian Yan Zhou ◽  
Qian Wang ◽  
Jing Hao Li ◽  
Zhong Feng Zhang

In order to select the optimal reinforcing material to reinforce structural lumber for timberwork, the properties and mechanics of experimental samples made by galvanized steel wire mesh and GFRP reinforced wood from Chinese plantation were analyzed. The experiment results showed that two kinds of reinforcing materials could reinforce lumber, and galvanized steel wire mesh had better mechanics than fiberglass mesh. Furthermore, the glued structural lumber had enough bonding strength which was fit to make structural composite lumber for timber bridge.


Author(s):  
N.Elumalai, Et. al.

The material comparative study of the product is used to reduce the weight of the product and then structural strength improvement, four stage gear box mostly used in the light vehicles like car and small Omni vehicles, gear box is the component give the more weight in the vehicle, gear box weight reduction and structural stability can be analyze through FEA methodology in ANSYS software


Author(s):  
Dattaraj Raikar

Abstract: Double Wishbone suspension systems are by far the best choice of suspension systems recommended for sports vehicles. It is more stable and stiffer when compared to the other suspension geometries. In this report a brief study of how a double-wishbone suspension system acts under loading conditions when traveling at high speeds is presented, also the forces acting on its components are analysed, and post-processed results are discussed. The geometry of the whole suspension is designed on SolidWorks and analysis is performed on Ansys software. Further the results from the analysis are studied based on material selection and various analysis methods. Finally, the proposed suspension system is concluded safe to use when the values of Equivalent stress, Total Deformation, and Factor of Safety were measured and under threshold limits. Keywords: double wishbone suspension, static structural, suspension system, analysis, deformation, Ansys, stress analysis, FOS, FEA, structural analysis.


2019 ◽  
Vol 957 ◽  
pp. 15-22
Author(s):  
Vlad Gheorghiță ◽  
Cătălin Gheorghiță

The wheelchair has become today indispensable for people experiencing various locomotor disabilities. By investigating the current concepts of solutions to improve the ability to move physically, it was attempted to propose a typology to address the mobility problem. On a basic manual wheelchair, a system will be attached to ensure overcoming the obstacles and to guarantee maintaining the stability of the entire wheelchair. This adjustment will improve the user independence and offer the option of attaching a group of wheels to facilitate smooth movement. By using the Ashby’s graphs that compare the ratio between different properties and by calculating the material index, the optimum material will be determine for the developed system.Ansys software was used to study the structural behaviour under the given boundary conditions by determining the total deformation and equivalent Von Misses stress and then comparisons were made between the obtained results. Also, through topology optimization the most strained areas were discovered and measures were proposed to remedy them.


2017 ◽  
Vol 53 ◽  
pp. 95-106 ◽  
Author(s):  
Manuel Banowski ◽  
Matthias Beyer ◽  
Lutz Szalinski ◽  
Dirk Lucas ◽  
Uwe Hampel
Keyword(s):  
X Ray ◽  

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