Study of Dome Structure Using Finite Element-Based Software E-Tab for Dynamic Loading

International Research Journal of Engineering and Technology

(IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 12 | Dec 2022 www.irjet.net p-ISSN: 2395-0072

Study of Dome Structure Using Finite Element-Based Software E-Tab for Dynamic Loading

Abstract Inrecentyears, there isbeenanincreasing number of structures using steel domes as it is one of the most efficient shapes in the world. It covers maximum volume with the minimum area with no interrupting columns in the middle an efficient shape would be more efficient and economic. Dome roofs are the lightest structure to cover circular shapes. In this research paper, the analysis of steel dome is examined using computer softwareE-tabs.Thispaperconductsadeepstudyofmajor features of structural analysis of E-tab software. E-tab softwarehastheanalysisofitsownfeaturesoption,output option, limitation, and advantages Dome is one of the powerful architectural representations This element resembles the hollow upper half of a sphere. In the age of civilizations,theformofthedomewasstuckinthepublic's minds as an iconic sign of a sacred building, but in the present time architects have built domes to achieve new purposes using new building technologies. This paper, therefore, investigates these technologies and outlines the newroleofdomesfollowinga scientificmethodology Itis an element of architecture that resembles the hollow upper half of a sphere. The thickness of the dome is very small compared to its other dimensions -it varies from 75mm to 150mm. A dome is a self-supporting structural element that resembles the curved hollow upper half of a sphere. A dome can rest directly upon walls, columns, a drum, or a system of squinches or pendentives used to support the transition of shape from a square orrectangletotheroundorpolygonalbaseofthedome

Keywords Efficient shape, Economic, Lightweight structure,E-tab

Introduction

Dome is one of the oldest and well established structural forms and has been used in architecture since ancient times.As the world'spopulation isgrowing fast,it isimportanttodesignurbanlivingspacesaccordingtothe needs of modern times. The main goal of this project is to study the need for cheap housing in India, where the maximum percentage of the population is still detained in poverty. It also provides safety and is a cost-effective shelter for middle-income people in households. To achievegreaterflexibility.

Dome structures have been proven to be long-lasting efficient structures due to their capability to carry the

appliedloads.Theverticalloadswillberesistedmainlyby theinternalcompressionstressesandoutertension.

Importanceofdomeintheconstructionindustry:

High strength: Dome structures are highly durable and strong. If we talk about the strength and average building life of dome structures, then their life is longer and strength is more than only other types of structure in the spaceframeindustry.

Fireproof: After getting practical data from decades of performing the firelighter test, it is concluded that domes have more excellent fireproofing capability than other similarstructures.

Extremely energy efficient: Dome structure does not need any interior support and thereby wide space inside them caterthemtheadvantageofmoresupport.

Cost-effective & good structural integrity: Dome structure comprises great structural tightness with minimal space andstructuralcomponentsanditsgeometricalshapegives an advantage to conserving energy in form of heat, which makesthedomestructurecost-effective.

Very Low Maintenance: Dome structures are comparatively easier to maintain than any other building, therefore the cost of maintenance on dome structures is lesser.

Good Acoustic Quality:In Most places where sound needs to travel continuously, dome structures are preferable to other structures due to the good acoustic nature of dome structures.

Resistant to adverse weather conditions:Due to their hemispherical Structure and absence of angles, flat surfaces make them highly resistant to adverse weather conditionssuchasStorms,Hurricanes,etc.

Highly aesthetic and versatile: We at Hindustan are also limited, one of the modern dome manufacturers uses the combinationofitsbasicfeaturesand thelatesttechnology to make the dome structure more appealing and highly versatile in installation/reinstallation as well as in maintenance.

International Research Journal of Engineering and Technology

Volume: 09 Issue: 12 | Dec 2022

Problem Statement

In real situations without calculation by software, it might be difficult for the engineer to calculate all the calculationsstartingfromthefoundationuntiltheroof.The calculation is consisting of long calculations to make sure the design is safe and economical. Manual calculations can causea lot of mistakes. In this case, E-tab software is used toanalyzecirculardomestructures50mindiameter.E-tab isusedtodefinethestrengthbehavioroftheelementinthe dome structure by modeling and analyzing the dome structure

The introduction of E-tab software has resulted in considerable advanced in the analysis and design of any structure. Therefore, it is a great encouragement to study and understand the use and importance of software in solvingpracticalproblems

Literature Review

1) State of the Art Report – A Comparative Study of Structural Analysisand DesignSoftware – STAADPro, SAP-2000&ETABSSoftware

BalwinderLallotra#1,DhirendraSinghal*2

(Professor and Chairperson, Department of Civil Engineering, D.C.R. University of Science and Technology, Murthal,India.April2017)

This paper aims to conduct an in-depth study of the major features of three structural analysis and design software programs STAAD Pro, SAP-2000, and ETABS softwarewhicharegenerallyused.Eachsoftwareprogram hasitsfeatures,analysisoptions,designandoutputoptions, limitations, and advantages. The user must exploit all the advantageousfeaturesofaparticularsoftwareprogrambut also the software program should not be used beyond its applicability to avoid any catastrophic failure. Therefore, thispaperdiscussesthemainfeaturesofallthesesoftware programs with an emphasis on the applicability and limitations of this software. This will enable a designer to choose the required software according to the requirementsofastructurewithconfidence.

2) Analysisanddesignofsteeldomeusingthesoftware.

AnjuChandivali

(Assistant Professor, Civil Engineering Department, ChhotubaiGopalbhaiPatelInstituteofTechnology,Gujarat, India-August2016.)

In recent years, there have been an increasing number of structures usingsteel domesof one of themost efficient shapes in the world. It covers the maximum volume with the minimum larger volumes with no interrupting columns in the middle with efficient shapes

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wouldbe more efficientandeconomic. Domeroofsare the lighteststructuretocovercircularshape

3) StructuralAnalysisofDomeStructurebySTAADPro Prof.VishalSapate1andGauravGhugare2

(Assistant Professor, Department of Civil Engineering1P.G. Student, Department of Civil Engineering2 G. H. Raisoni University,Amravati,Maharashtra,IndiaJuly-2021)

Dome is one of the oldest and most well-established structural forms and has been used in architecture since ancient times. They are of particular interest to engineers because they cover the maximum amount of space with a minimumsurfaceandhaveprovedtobeveryeconomicalin termsoftheconsumptionofbuildingmaterials.Thispaper compares the dome with different spans and column heightsusingSTAAD-PROsoftware

4) Anexperimentalandanalyticalstudyondomeforming of seamlessAltubebyspinning

N.Akkusa,M.Kawaharab.

(a Marmara University, Faculty of Technical Education, Istanbul, Turkey Tokyo Metropolitan University, Graduate SchoolofEngineering, Tokyo,Japan Received3November 2004;accepted3November2000)

Thethicknessdistributionofaspin-formeddomeinanAlpressure vessel was studied experimentally and a simple formulation to predict the thickness distribution of the dome was proposed. The thickness of the boss part of the domemaynotbesufficientafterforming operationsThus, a two-step spin forming of the Al tube end closure was proposed to improve and thicken the boss. First, the boss was deformed to a diameter smaller than the desired one. Experimental work was carried out to compare the thickness distribution obtained with the conventional process and use the proposed two-step spin-forming process. A simple analytical model, which was based on geometrical shape changes and an assumption of material constancy during forming, was formulated to predict the final thickness distribution of the dome. The results indicatethattheproposedtwo-stepspinformingprovides agreaterbossthicknessthanthatofconventionalforming.

4) Finite element analysis of a geodesic dome structure byusingSTAADPROsoftware

MohamadAidilbinAbdKasim

(Faculty of Civil Engineering and Earth Resources UniversityMalaysiaPahang)

Finiteelementanalysis(FEA)hasbecomecommonplacein recent years and is now widely used in the construction industry during the analysis and design of a structure.

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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 12 | Dec 2022 www.irjet.net p-ISSN: 2395-0072

Numerical solutions to very complicated stress problems can now be obtained routinely using FEA. The Dome structureis uniqueduetotheabilitytowithstanda larger span with minimum interference. Geodesic domes are efficient structure because it consists of the triangular element along the hemisphere to resist the load. The Triangleelementisthemosteffectiveshapein atrussand the combination of the triangle element the and dome makes a geodesic dome a strong structure to resist the load. STAAD-Pro software is based on finite element analysis and this software is widely used in industry becauseitisaccurateduringtheanalysis ofa structureby usingthefiniteelementmethod(FEM).Thisstudyisabout analysis of the structural behavior of the Geodesic Dome Structure by using STAAD-Pro Software to determine the maximum deflection and all the reaction force on the structurewhentheloadisappliedtothemodel

5) Analysisanddesignofsteeldomeusingthesoftware

Anju Chandivali (Assistant Professor, Civil Engineering Department, Chhotubai Gopalbhai Patel Institute of Technology, Gujarat, India-August 2016.)

In recent years, there have been an increasing number of structures using steel domes of oof of the most efficient shapes in the world. It covers the maximum volume with the minimum largervolumeswithnointerruptingcolumnsinthemiddle with an efficient shape would be more efficient and economic. Dome roofs are the lightest structure to cover circular shapes. Dome can be used when the internal pressureishigher;donothaveproblemswithmountingan internal floating of Supplementary foundations are not necessary for dome roofs. In other words, always when it is possible the dome roofs are recommended. In this research paper, the analysis of steel ds was examined by the use of the computer software STAAD-Pro. For the analysis of different diameters of the steel tube member andthebehaviorofthesteel

6) State of the Art Report – A Comparative Study of Structural Analysis andDesignSoftware – STAADPro, SAP-2000&ETABSSoftware.

Balwinder Lallotra 1, Dhirendra Singhal2 (Professor and Chairperson, Department of Civil Engineering, D.C.R. University of Science and Technology, Murthal,India.April2017)

Thispaperaims toconductanin-depthstudyofthemajor features of three structural analysis and design software programs STAAD Pro, SAP-2000, and ETABS software which are generally used. Each software program has its features, analysis options, design and output options, limitations, and advantages. The user must exploit all the advantageous features of a particular software program but also the software program should not be used beyond

its applicability to avoid any catastrophic failure. Therefore, this paper discusses the main features of all these software programs with an emphasis on the applicability and limitations of this software. This will enable a designer to choose the required software according to the requirements of a structurewithconfidence

7) Seismic response analysis of K8 pattern single-layer reticulatedDomesunderverticalrareearthquakes

De-Min Weia, Sheng-Fu GAO b (School of civil engineering and transportation, South China University of Technology, State Key Laboratory of Subtropical Building Science, Guangzhou and 510640, China.December2017)

The nonlinear response of K8 pattern single-layer reticulated domes of different rise-span ratios under vertical rare earthquakes are analyzed by using the dynamic time-history analysis method and the pseudostaticelasto-plasticanalysismethod.Acomparisonofthese analysis results indicates that the structural members would be in different plastic deformation states under vertical rare earthquakes because of different rise-span ratios. The analysis results of the dynamic time-history method indicates that the vertical displacement response decreases with the increase of the rise-span ratio in the condition of the same member section. Through the comparison of the analytical results of the pseudo-static elasto-plastic analysis with the analytical results of dynamic time-history analysis, it is found that the difference of plastic members and region and error of the vertical displacement response, which may be a reference for future vertical seismic study of single-layer reticulated domes.

Methodology

Thetheoreticalbackgrounddiscussedsofarrepresentsthe backbone of the methodology we have applied to some of therelevantdomedstructuresintheworld.

As mentioned in the paper, domes are difficult to investigateandanalyze.Throughouthistory,manymethods have been applied to measure their surface and to assess their geometry and shape. Whereas, domes are quite difficulteventoreach.

Step 1-Topic Name -Comparative Analysis of Dome Structure using Finite Element based on Software E-tab andStaadforDynamicAnalysis.

Step2-WhatisDomeanditstypes?

Dome- Hemispherical structure evolved from the arch, usuallyformingaceiling/roof.

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056

Volume: 09 Issue: 12 | Dec 2022 www.irjet.net p-ISSN: 2395-0072

Types- Geodesic dome, Onion dome, Hemispherical dome.

Conclusion

[1] The dome is one of the best architectural solutions to cover universal space containing multi functions in oneenclosure.

[2] Now it has become easier to analyze the dome structureUsingETABSsoftware. [3] Inthisstudy,wehavecreatedadomemodel. [4] ETABSisspecializedintheanalysisofthestructure

[5] The dome structure allows for a wide variety of floor plansdesignbecauseitneedsnointeriorsupport.

REFERENCES

[1] State of the Art Report – A Comparative Study of Structural Analysis and Design Software – STAAD Pro, SAP-2000 & ETABS SoftwareBalwinder Lallotra #1, Dhirendra Singhal*2 (Professor and Chairperson, Department of Civil Engineering, D.C.R. University of ScienceandTechnology,Murthal,India.April2017)

[2]Study of Interior Beam-Column Joint under Seismic Effect, International Journal for Scientific Research and Development,IJSRDV8I100164Vol.7,Issue4,01/07/2019

[3]PresentedpaperonPerformanceofBeam-ColumnJoint using Non-conventional Reinforcement Technique under Cyclic load, International Conference on Innovative Research in Mechanical, Electrical, Electronics, Civil, Computer Science and Information Technology(MECIT2015),17-18 May 2015, Organized by Krishi Sanskriti, Jawaharlal Nehru University, New Delhi (with Dr. S. N. KhanteandAniketV.Nemade)

[4] State of the Art Report - A Comparative Study of StructuralAnalysisandDesignSoftware-STAADPro,SAP2000&ETABSSoftware.BalwinderLallotra#1,Dhirendra Singhal 2 (Professor and Chairperson, Department of Civil Engineering, D.C.R. University of Science and Technology, Murthal,India.April2017)

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 09 Issue: 12 | Dec 2022 www.irjet.net p-ISSN: 2395-0072

[5]ComparativeStudyofStructuralSoftwareSap2000and Staad Pro. Lelisa Nemo Nura, Jay Prakash Pandit (M.Tech student, Dept. of Civil Engineering, Jawaharlal Nehru Technological University (JNTUH), Hyderabad, India, April 2019)

[6]DynamicResponseOfBracedDomesUnderEarthquake Load. Ihab Sabri (International Journal of Scientific and EngineeringResearch,April2018.)