determination of multipurpose, space saving seating ...

International Journal of Research In Science & Engineering Volume: 2 Issue: 1

e-ISSN: 2394-8299 p-ISSN: 2394-8280

“DETERMINATION OF MULTIPURPOSE, SPACE SAVING SEATING ARRANGEMENTS WITH CAD & CAE SOFTWARE’S” Dhiraj V. Astonkar1 , Dr.Sanjay M. Kherde 2 1

Final Year M.E.Mech.Engg.(CAD-CAM), Dr.Sau.Kamaltai Gawai Institute of Engg.&Technology ,Darapur, Amravati, [email protected] 2 Professor-Principal, Dr.Sau.Kamaltai Gawai Institute of Engg.&Technology, Darapur, Amravati, [email protected] ABSTRACT In India majority of Indian middle class populations are living in small flats and homes this is mostly because of their economy scale as well as the lack of space availability for living. But in the present scenario furniture occupies a majority of the space. Moreover, high population density leads many other problems such as high gap between rich and poor, high energy cost and house price. These are common problem in now days. Space saving furniture is one of the options to solve these problems. To overcome this problem the seating arrangements of the furniture should be multipurpose, space saving than their primary functions. In this paper, introduction of the innovative designs for space saving seating arrangements have given. This study is to CAD Modeling with PRO/E, finite element analysis with different load and materials in ANSYS & development with understanding of ergonomics on waste material (vehicles used tubes & tyres); Space saving furniture or seating arrangements is built to make people live easier and more comfortable. Space saving seating arrangements and tables are occupy some area so, foldable as well as movable are easily transported from one place to another and used in variety of outdoor conditions. It is also convenient to provide seating arrangements and tables that may be reduced to small size for ease of carrying and storage. The choice of furniture material affects the look surrounding and load capacity. This paper will help people to understand the importance of multipurpose, space saving seating arrangements in different places.

Keywords: Space saving, Seating arrangements, Furniture’s. 1. Introduction Furniture can be defined as a class of designed objects which provides utility functions such as sleeping, supporting, service and sanitation. In the present scenario the furniture has become a style substance in each and every home. The family members give almost care for the selection of their furniture and now it is a product considered to be a form of decorative art. In olden times the furniture’s are made up of wood and related items but now a lot of development and now the furniture’s are made including different material. Space saving seating arrangements and tables are occupy some area so, foldable as well as movable are easily transported from one place to another and used in variety of outdoor conditions. It is also convenient to provide seating arrangements and tables that may be reduced to small size for ease of carrying and storage. The concepts more modular and flexible design of seating arrangements should be folded and can be easily stored. Multipurpose rotating seating arrangements is great for dining or use as a serving table. All types of seating arrangements and tables have some advantage and disadvantage. The customer buys the seating arrangements and tables according to their requirements like study table, dining table, office table etc. The choice of furniture material affects the look surrounding and load capacity. In Computer Aided Design (CAD) software are used for modeling the objects with different design of CAD Model as well as the Finite Element Analysis using ANSYS tools with different loads & materials applicable then development and procedures of space saving with product prepared from waste material of rubber tubes for easily transported from one place to another and used in outdoo r conditions also.

2. Market Study & Survey User study needs to be conducted in order to experience the user and its environment. This may help the designer to design an appropriate product which suits the environment. User study has been conducted around 8-10 seating arrangements or chairs in order to find the user experience and various issues regarding chairs space

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occupied as well as some problems identified regarding ergonomically view. Initially all the stake holders are considered and study has conducted in order to get more information. Observations from Market Study & Survey are,  Majority of Indian middle class populations are living in small flats & homes.  To understand the lifestyle, need and comfort  Requirement of foldable as well as movable space saving seating arrangements  Multipurpose, Modular, Flexible And Space -Saving  Ergonomically perfect product  Low Cost of product so used some waste material or recycle material.

3. Methodology Methodology helps to find out the best solution for each design situations. A systematic a pproach and procedure is to be followed to achieve the suitable solution. It involves the following steps:  Concept of CAD modeling with PRO/E.  Finite Element Analysis with different material & load in ANSYS.  Comparisons of Analysis.  Development of Seating Arrangements with space saving process.  Ergonomic details  Conclusion

4. Concept of CAD modelling 4.1 Concept [Seating Arrangements from Rubber Tubes & Tyres] This is new concept of seating arrangements from rubber tubes & tyres of vehicles. Comparing these seating arrangements, tubes is space saving because we can fill air in it whenever necessary and when there is no use of it we can remove air from it and can be foldable easily and in this way we can save space.

Fig.01 Assembly of Seating Arrangements from rubber tubes

Fig.02 Assembly of Seating Arrangements from rubber tyres

5. A GENERAL PROCEDURE FOR FINITE ELEMENT ANALYSIS Certain steps in formulating a finite element analysis of a physical problem are common to all such analyses, whether structural, heat transfer, fluid flow, or some other problem. These steps are embodied in commercial finite element software packages (some are mentioned in the following paragraphs) and are implicitly incorporated in this text, although we do not necessarily refer to the steps explicitly. The steps are as follows. 1. Preprocessing 2. Solution 3. Postprocessing



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6. Analysis on Seating Arrangements from Rubber Tubes & Tyres: 6.1. Seating Arrangements from Rubber Tubes: In Seating Arrangements from Rubber Tubes analysis first import model in ANSYS software in .iges file format then material is selected for analysis, in rubber tubes there are two materials are used Nylon 6/6 for belts & ropes used in seating arrangements & Elastomers (Natural & Synthetic Rubber) for tube (vehicle tube) used in seating arrangements after selecting material a seating arrangements divided into a small number of solid finite element, this process is known as meshing, then applying load on upper portion of seating arrangements then analyzing result of Analysis.

6.2. Loads apply on Seating Arrangements: Normal Person Weight = 70 kg = 70 × 9.81 = 686.7 N Assume Force on seating arrangements 70% of Weight = 0.70 × 686.7 = 480.69 N Heavy Person Weight = 100 kg = 100 × 9.81 = 981N Assume Force on seating arrangements 70% of Weight = 0.70 × 981 = 686.7 N

6.3. Material Properties: Property

Nylon 6/6

Young’s Modulus (Pa) Poisson’s Ratio Density (kg/m3 ) Tensile Yield Strength (Pa)

Elastomers(Natural & Synthetic Rubber)for tube 3.6e+009 5.e+006 0.4 0.48 1150 1250 8.2e-002 2.e+007 Table 01 Material Property for Analysis

Elastomers(Natural & Synthetic Rubber)for tyre 5.e+006 0.48 1350 2.e+007

6.4. Comparisons of Analysis on Seating Arrangements from Rubber Tubes & Tyres: Material

Load (Kg/N)

Seating Arrangem ents from

Seating Arrangem ents from

Rubber Tubes

Rubber Tyres

70/480.69

100/686.7

70/480.69

Total Deformation 0.164 0.2335 1.9469e-002 (Max.)m Equivalent (Von-Mises) 8.2322e+007 1.1722e+008 2.4681e+006 Stress(Max.)Pa Normal Stress (Max.) Pa 6.6516e+007 9.4706e+007 2.8291e+006 Table 02 Comparisons of Analysis on Seating Arrange ments from Rubber


100/686.7 2.6242e-002 3.3664e+006 3.8795e+006 Tubes & Tyres


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6.5. Result of Analysis on Seating Arrangements from Rubber Tubes & Tyres: Analysis Results for load 70kg

Analysis on Seating Arrangements from Rubber Tubes

Analysis on Seating Arrangements from Rubber Tyres

Meshing Model

Total Deformation

Equivalent (Von-Mises) Stress

Normal Stress

Table 03 Comparisons of Analysis Result on Seating Arrangem ents from Rubber Tubes & Tyres for 70 kg


International Journal of Research In Science & Engineering Volume: 2 Issue: 1 Analysis Results for load 100kg

Analysis on Seating Arrangements from Rubber Tubes

e-ISSN: 2394-8299 p-ISSN: 2394-8280 Analysis on Seating Arrangements from Rubber Tyres

Meshing Model

Total Deformation

Equivalent (Von-Mises) Stress

Normal Stress

Table 04 Comparisons of Analysis Result on Seating Arrangeme nts from Rubber Tubes & Tyres for 100 kg



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8. Development with waste material [Vehicles Used Tubes & Tyres] This is another new concept of seating arrangements from waste tubes & tyres of vehicles: In the concept of seating arrangements from tyres. We have taken two tyres and they have fixed by using nut & bolt one above the other. To the upper tyre nylon rope has woven in such a way that a tight base must form. Innovative design of seating arrangements from tubes. Two tubes are taken. They are placed one above the other and are tightened by 8 bags belts. First of all lower tube is wrapped by belts and they are pulled above the upper tube and sewed itself. Nylon rope is tightened in rounded manner. On comparing above two types of seating arrangements, the seating arrangements of tubes is space saving because we can fill air in it whenever necessary and when there is no use of it we can remove air from it and can be folded easily and in this way we can save space.

Fig.03 Development of Seating Arrangements from Tubes & Tyres

8.1. Stepwise Process of space saving seating arrangements with pictorial view:

Remove Air form Rubber Tubes

Filling Space saving Seating Arrangements in Bags

Folding Seating Arrangements form Rubber Tubes

Filling Air in Space saving Seating Arrangements

Holding Package of Seating Arrangements form Rubber Tubes

Rearranging Space saving Seating Arrangements

Table 05 . Stepwise Process of space saving seating arrangements with pictorial view



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8.2. Ergonomic details:

Load Bering 68kg on Seating Arrangements from Rubber Tubes

Load Bering 81kg on Seating Arrangements from Rubber Tubes

Fig.04 Ergonomic details with different load Bering capacity

9. Conclusion: Space saving seating arrangements is an innovative product that has much opportunity for future development and a huge potential market for middle class populations are living in small flats and homes this is mostly because of their economy scale as well as the lack of space availability for living. The designs of transformable or foldable space saving seating arrangements can be even more variables with CAD modeling, analysis of space saving seating arrangements are within safe limits under different load varying conditions, different material properties & development with checking ergonomics conditions on same seating arrangements used with a waste materials [rubber tubes & tyres] are focused in this paper. Such type of space saving seating arrangements can help to designers, architects & engineers to make more effective and efficient. To improve the future of space saving products, designers need to create more innovative ideas to understand the importance of ergonomics and used with waste material of our daily life. These kind of innovative designs could also save space problems & lower the cost of product due to use of waste materials.

10. Reference: [1] Dhiraj V. Astonkar, Dr. Sanjay M. Kherde, “Development in various multipurpose furniture’s by using space saving approach”, on IRJET 2015, volume 2(6), Issue 6 Sept. 2015, pp 257-264. [2] Dhiraj V. Astonkar,Dr.Sanjay M. Kherde, “Modeling and Analysis of multipurpose, space saving seating arrangements using CAD Approach”, on IJPRET 2014, volume 2(9), Issue 1 May 2014, pp 504-520. [3] Emil Varghese,Sudhindra Kumar, Lohit H. S, “Design of Multipurpose Modular, Flexible and Space Saving Dining Table”,on SAS TECH,volume10,Issue 2 sept.2011,pp103-111. [4] Amol M. Kolhe, Samir J. Deshmukh,”Development of a Foldable Seating Device Useful in Public Places”,on IJTARME,ISSN:2319-3182,volu me-1,Issue-2,2012,pp 9-13. [5] Sreerag C.S.,Gopinath C.,Manas Ranjan Mishra,”Design and Development of Conceptual Wheelchair cum Stretcher”,on SASTECH,volume10,Issue2 sept.2011,pp78-86. [6] Shiyao Wang, “An Analysis of Transformable space saving Furniture”, on WOOD 493, Issue 8 April 2013. [7] Tan Boon Chai.”New concept of furniture design by using space saving approach” at University Teknikal Malaysia Melaka. [8] Dr. Tim Springer, President HERO, Inc.”The Future of Ergonomic Office Seating”, on Knoll Workplace Research,2010. [9] Lise Abrahamsen Kratter,”Development of environmentally friendly chair concept”at Norwegian University of Science & Technology,June 2012.
