International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
Finite Element Analysis of Hybrid Trike’s Roll Cage Vedant M. Kulkarni1, Rahul R. Patil2, Shubham D. Sagar3, Mihir M. More4 1, 2, 3, 4 Graduated
Students from the Department of Mechanical Engineering, Marathwada Mitra Mandal’s College of Engineering, Pune, Maharashtra, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Green technological trends are gradually being
used to promote eco-friendly attitudes considering the growing concern over a steep decline in global fuel sources and frightening rates of pollution. Efficycle is a three-wheeled vehicle with two human pedals that is powered by electricity to help with daily transportation. The vehicle frame has to be ergonomically designed without compromising performance and safety. The roll cage's design and analysis were focused on improving structural integrity and overall attractiveness. The roll cage material selection method and finite element static structural analysis of the roll cage in FEA software Hypermesh to estimate its structural strength are discussed in this paper. The roll cage materials were chosen with the goal of maximizing strength with reducing weight and cost. The key parameters taken under consideration were driver ergonomics, weight reduction and cost of manufacturing of the chassis. Key Words: Hybrid Vehicle, Efficycle, Structural analysis, Safety, Von Mises Stress
1. INTRODUCTION The most significant factor for passenger safety is the vehicle frame. The operator, engine, brake system, fuel system, and steering mechanism are all included in the frame, which must be strong enough to protect the operator in the case of a rollover or crash. The passenger cabin must be able to withstand all forces that are applied to it. This can be accomplished by using high-strength materials or designing superior cross sections to withstand the imposed load. However, the triangulation approach is the most practical way to balance the dry mass of a roll-cage with the optimum number of members. The roll cage must be made of steel tubing that meets SAE's minimum dimensions and strength criteria. The SAE Efficycle vehicle development handbook also places limitations on the vehicle's weight, shape, and size, as well as its measurements. The circular cross-section is used in the roll cage development because it helps to overcome challenges such as increased size, increased total weight, and decreased fuel economy. It's always great for resisting twisting and rolling impacts, thus it's the best choice for torsional stiffness.
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Impact Factor value: 7.529
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1.1 Design Objectives 1.
Ensure the driver's safety by achieving the appropriate strength and torsional stiffness while lowering weight through careful tube selection.
2.
To guarantee that both material and production costs are competitive with other SAE vehicles, design for manufacturability as well as cost reduction.
3.
More lateral space and leg room in the driver compartment will improve driver comfort.
4.
Ensure that roll cage members do not interfere with one another for ease of serviceability.
1.2 Finite Element Analysis The Finite Element Analysis (FEA) is a numerical approach that simulates any given physical process (FEM). Engineers utilise it to decrease the number of physical prototypes and trials, as well as optimise components throughout the design process, in order to create better products faster. To fully comprehend and quantify any physical phenomenon, such as structural or fluid behaviour, heat transfer, wave propagation, biological cell proliferation, and so on, mathematics is required. Partial Differential Equations are used to describe most of these processes (PDEs). Numerical approaches have been developed over the last several decades to allow a computer to solve these PDEs, and nowadays one of the most used technique is Finite Element Analysis.
2. CASE STUDY The roll cage's primary purpose is to protect the driver in the event of a collision or rollover. The secondary goal of chassis design is to offer mountings for all of the components while maintaining a low centre of gravity. Furthermore, in designing the frame, driver's comfort and ergonomics should be considered. These goals can be achieved by careful material selection, the design of a light-weight, durable structure and comprehensive finite element analysis of the roll cage against multiple modes of failure to ensure driver’s safety. Numerous iterations were carried out before finalizing the design. Dassault Catia was used to design the vehicle's roll cage, while Altair Hypermesh was used to analyze the results ISO 9001:2008 Certified Journal
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