DOM_CP.pptx
- 1. Sr. No. Roll No. Name PRN NO. 1 58 Younis Giri 12010378 2 69 Aniruddha Thakur 12120191 3 72 Rameshwari Ramesh Ugale 12120241 4 75 Sagar Yadav 12120251 5 76 Dhiraj Zope 12120161 MECH-D: Batch 3 - Group 3 DESIGN AND ANALYSIS ON SHOCK ABSORBER Guide – Prof. R.K.Bhagat DOM-ME3262
- 2. Contents ● Cause of Failure ● Shock Absorber Material ● Manufacturing Technique ● Introduction & Objective ● Types Of Shock Absorber ● Design of Spring And other Component ● Geometry ● Meshing ● Analysis ● Result
- 3. INTRODUCTION ❏ A shock absorber, also known as a suspension damper, is an essential component of a vehicle's suspension system. ❏ Shock absorbers play a critical role in ensuring a smooth and comfortable ride for passengers, as well as improving vehicle handling ❏ Shock Absorber come in various types and designs depending on the specific application and performance requirements.
- 4. OBJECTIVE ➔ To improve ride comfort and reduce vehicle vibrations and noise, resulting in a smoother and quieter ride for passengers. ➔ To improve vehicle handling and stability by minimizing body roll, pitch, and dive, thereby enhancing the vehicle's steering response and road holding capabilities. ➔ To improve tire life and traction by maintaining consistent contact between the tires and the road surface, which helps to ensure proper grip and reduces the risk of skidding or hydroplaning.
- 5. "Design and Analysis of a Pneumatic Shock Absorber for a Bike" by R. Ravi and K. Suresh Babu ➔ This paper proposes the design and analysis of a pneumatic shock absorber for a bike. The design is optimized using simulation software and experimental testing. The results show that the pneumatic shock absorber has better performance compared to traditional hydraulic shock absorbers. "Design and Analysis of a Twin Tube Shock Absorber for a Bike" by G. Lakshmi Narayana and K. Vinod Kumar ➔ This paper presents the design and analysis of a twin tube shock absorber for a bike. The shock absorber is modeled using ANSYS software and optimized using Taguchi method. The results show that the twin tube shock absorber has better performance in terms of damping and stiffness compared to a conventional mono-tube shock absorber. "Design and Analysis of an Electromagnetic Shock Absorber for a Bike" by A. Karthick, R. Arun and M. Arulselvan ➔ This paper proposes the design and analysis of an electromagnetic shock absorber for a bike. The shock absorber is designed using simulation software and optimized using Taguchi method. The results show that the electromagnetic shock absorber has better performance compared to traditional hydraulic shock absorbers. LITERATURE REVIEW
- 6. "Design and Analysis of a Composite Shock Absorber for a Bike" by M. Ravi Shankar and B. Vijaya Ramnath” ➔ This paper presents the design and analysis of a composite shock absorber for a bike. The shock absorber is made of a composite material and optimized using simulation software. The results show that the composite shock absorber has better performance in terms of weight, stiffness, and damping compared to traditional shock absorbers. "Design and Analysis of a Hydraulic Shock Absorber with Variable Damping for a Bike" by S. Ganesh and K. Suresh Babu” ➔ This paper proposes the design and analysis of a hydraulic shock absorber with variable damping for a bike. The shock absorber is modeled using ANSYS software and optimized using Taguchi method. The results show that the hydraulic shock absorber with variable damping has better performance compared to traditional hydraulic shock absorbers. "Design and Analysis of an Electromagnetic Shock Absorber for a Bike" by A. Karthick, R. Arun and M. Arulselvan” ➔ This paper proposes the design and analysis of an electromagnetic shock absorber for a bike. The shock absorber is designed using simulation software and optimized using Taguchi method. The results show that the electromagnetic shock absorber has better performance compared to traditional hydraulic shock absorbers.
- 7. MATERIALS USED IN SHOCK ABSORBER Copper alloy Spring steel Titanium alloy Structure steel ➔ Excellent thermal and electrical conductivity, high strength and corrosion resistance. ➔ Copper alloy shock absorbers are commonly used in high- performance and racing bikes due to their ability to dissipate heat quickly, ➔ High-carbon steel alloy known for its elasticity and strength. ➔ It is commonly used in shock absorbers due to its ability to withstand high stresses and provide high levels of damping. ➔ High-strength carbon steel alloy that is commonly used in construction and engineering applications. ➔ It is often used in shock absorbers due to its high strength and ability to withstand large amounts of stress. ➔ High strength-to-weight ratio, excellent corrosion resistance, and biocompatibility. ➔ They are commonly used in shock absorbers for high-performance and racing bikes due to their ability to provide high levels of damping while being lightweight.
- 8. MANUFACTURING TECHNIQUES 1. Casting: This manufacturing technique involves pouring molten metal into a mold to create the desired shape of the shock absorber. 1. Forging: This technique involves shaping metal by hammering or pressing it under high pressure. It can be used to create shock absorber components such as piston rods and cylinders. 1. Welding: Welding is used to join two or more pieces of metal together to create the shock absorber components. Common welding techniques include MIG welding and TIG welding. 1. Machining: Machining involves cutting and shaping metal using machine tools such as lathes, mills, and drills. It can be used to create components such as valve bodies and brackets. 1. Powder metallurgy: This technique involves compacting metal powders into a desired shape and then sintering them under high temperature and pressure to create a solid metal part. It can be used to create complex shapes and reduce material waste.
- 9. CAUSES OF FAILURE ● Overheating: ● Wear and Tear: ● Corrosion ● Impact Damage ● Manufacturing Defects ● Fatigue Failure
- 10. TYPES OF SHOCK ABSORBER Metal Spring Hydraulic type shock absorbers Double acting shock absorbers Single acting shock absorber 5. Lever Type Shock Absorber Telescopic type shock absorber
- 11. Flow of project Comparison of all material Analysis and result Meshing Boundary condition Problem Statement Design of Helical spring Modelling shock absorber Importing model in workbench
- 12. SOFTWARES USED ❏ CATIA ❏ Ansys
- 13. Used Material - Properties Young Modulus- 130000 N/mm2 Density-8100 Kg/mm3 Poisson Ratio- 0.285 Young Modulus- 102000 N/mm2 Density- 4850 Kg/mm3 Poisson Ratio- 0.3 Young Modulus- 103000 N/mm2 Density-8160 Kg/mm3 Poisson Ratio-0.34 Young Modulus- 202000 N/mm2 Density-7820 Kg/mm3 Poisson Ratio- 0.292 Copper Alloy Spring Steel Phosphorus bronze Titanium Alloy
- 14. Design Considerations ➔ When designing shock absorbers, engineers must consider various factors such as the weight and size of the vehicle, driving conditions, and the desired level of comfort and handling. ➔ The design should also take into account the type of suspension system used in the vehicle. ➔ The analysis of shock absorbers involves testing their performance under different conditions, such as varying speeds and road surfaces, to ensure that they meet the required specifications. ➔ This testing helps engineers optimize the design for maximum performance and durability.
- 15. Design Calculation of Spring Steel Modulus of rigidity G = 80000 N/mm2 Average shear stress =364 MPa C = spring index = 8, Wahl‟s stress factor= 1.8268 Mean diameter of a coil D=64mm Diameter of wire d = 8mm Total no of active coils = 28 Outer diameter of spring coil D0 = D +d =72mm No of active turns n= 16 Weight of bike = 125kgs Let weight of 1 person = 75Kgs Weight of 2 persons = 75×2=150Kgs Weight of bike + persons = 275Kgs Rear suspension = 60% Hence 60% of 275 = 165Kgs Considering dynamic loads it will be double W = 330Kgs = 3234N For single shock absorber weight = w/2= 1617N = W Compression of spring (δ) = 111.98mm Solid length, Ls=n‟×d=24×18=192mm Free length of spring, Lf = solid length+maximum compression + clearance between adjustable coils = 165.6 + 111.98 + 0.15 × 111.98 = 305.77mm Spring rate, K =14.44 Pitch of coil, P = 22.64
- 16. 2D DESIGN
- 17. 3D DESIGN
- 18. MESH OF SHOCK ABSORBER IN ANSYS
- 20. RESULTS Total Deformation Phosphor bronze Titanium Alloy Static Structural
- 21. Spring Steel Copper Alloy RESULTS Total Deformation
- 22. RESULTS Stress Static Structural Phosphor bronze Titanium Alloy
- 23. RESULTS Stress Static Structural Spring Steel Copper Alloy
- 24. RESULT TABLE Sr.no Parameters Spring Steel Phosphor Bronze Titanium Alloy Copper Alloy 1) Maximum deformation(in mm) 0.05894 0.1121 0.12332 0.05949 2) Maximum stress intensity MPA(N/MM2) 127.31 83.516 120.86 126.62
- 25. ● Meshing element size 3mm Tetrahedron mesh. ● Load 3234 N and fixed support. ● Material used Phosphor bronze, Titanium Alloy, Copper Alloy, Spring Steel. ● On the perspective of Deformation Spring steel is better with respect to other materials. ● Economically Effective. CONCLUSION
- 26. REFERENCES 1) "Design and Analysis of a Pneumatic Shock Absorber for a Bike" by R. Ravi and K. Suresh Babu. 2) "Design and Analysis of a Twin Tube Shock Absorber for a Bike" by G. Lakshmi Narayana and K. Vinod Kumar. 3) "Design and Analysis of an Electromagnetic Shock Absorber for a Bike" by A. Karthick, R. Arun and M. Arulselvan. 4) "Design and Analysis of a Composite Shock Absorber for a Bike" by M. Ravi Shankar and B. Vijaya Ramnath”. 5) "Design and Analysis of a Hydraulic Shock Absorber with Variable Damping for a Bike" by S. Ganesh and K. Suresh Babu”. 6) "Design and Analysis of an Electromagnetic Shock Absorber for a Bike" by A. Karthick, R. Arun and M. Arulselvan”.
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