The fsae rules require the impact attenuator have minimum dimensions of 200 mm by 200 mm by 100 mm depth by width by height, respectively. The result of analysis shown that the sheet metal shell was creating problems in deformation. Formula student impact attenuators, then the next step was the requirement analysis in order to set the goals for the design process from the aspect of the team and the car, while the formula student rules had to be met. Simulation in abaqus of the impact attenuator for fsae. Students design impact attenuator with plascore aluminum honeycomb. An ebook reader can be a software application for use on a computer such as microsofts free reader application. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product. The finite element model of the structure was developed by means of the software code hyper mesh. Impact attenuator data iad and supporting calculations must be submitted electronically in adobe acrobat format. A current engineering evaluation john hinch, douglas sawyer, dale stout, martin hargrave, and raymond owings this study, sponsored by the federal highway administration fhwa and conducted by ensco, inc. Design and experimental validation of carbon fiber impact. Lower leg impact protection structural panels load floors sun shades. Impact attenuator fsae simulation in abaqus youtube.
Amit telang departmentof mechanical engineering, manit bhopal. Bsci energy impact systems is not affiliated with sae international or the formula sae rules committee. People often forget that your impact attenuator report actually contributes quite a significant amount to your design. The prime intension is to present a design of impact attenuator which can be used in formula sae racecars. System model concept 1 chassis design and impact attenuator loads and. The analysis was performed based on computerized simulation software for calculated the. Design and optimization of an fsae frame, suspension, and. Design of a formula student impact attenuator tue 1. Many parts of a fsae racing car has been studied, including impact attenuators 12 3 456.
This article describes the design process of the impact attenuator with lightweight materials to satisfy the required weight reduction targets for formula sae racing car. Fsae impact attenuator 3d cad model library grabcad. Design and experimental verification of composite impact. Design and development of impact attenuator for racecar. Mar 01, 2008 physical simulation of the 2007 wave shape model attenuator. Impaxx 700 foam is a highly engineered, extruded, thermoplastic foam that utilizes dow proprietary process technology to maximize efficiency and minimize weight. Yesno attach additional information below this point andor on additional sheets test schematic, photos of test, design report including reasons for selection and advantagesdisadvantages, etc.
The type 11 impact attenuator is approved for the 2011 fsae competition season only and the minimum required design may change in future years. Optimization of impact attenuator design using finite element method for enhanced vehicle safety during collision vikas shrivastava, dr. Attenuator absorbs the kinetic energy of the collision. It now requires minimum 8 bolts up from the minimum 4 from past years. Design and physical testing of impact attenuator for formula sae race car nikhil s. Design of the impact attenuator for a formula student racing car. The highvisibility design helps motorists navigate tight curves and redirects motorists back to the roadway in the event of an impact. Based on the calculated results, it is found that impact attenuator made up of aluminum cans satisfies all functional requirements and design rules set up by formula sae. This project included the design, modeling, fabrication and testing of two impact attenuator design.
As per rules, mentioned in fsae rulebook 2017 for impact attenuator. Design of the impact attenuator for a formula student racing. The impact attenuator form must still be submitted as is proof your design matches the standard design. You might be able to make a lighter attenuator if you do quasistatic but you may also be penalised in your design score. Design of the impact attenuator for a formula student racing car 56 3. Also, the design outlines of shape and analysis techniques were defined in the first design step. In the formula sae events undergraduate and graduate students are required to conceive, design, fabricate and compete with a small, formulastyle, race car. This project aims to manufacture an ia that is costeffective for fsae car.
In the 2015 fsae competition rules, the impact attenuator must satisfy the following requirements. Formula sae safety rules dictate a 7 ms or approximately 15. All the vehicles need to be equipped with a safety device because for safety of the driver and passenger. The design will then be published on the fsae website. The shell was designed in two stages in the shape of cuboids as.
What software should i be using to simulate the foam designs. Table 1 and table 2 give us the respective material composition and. Design and fabrication of impact attenuator for formula sae car. Complete geometry was done by means of the software for 3d modeling. According to fsae rulebook, attenuator should have specified minimum dimensions and mounting constraints. This material is highly weldable using tig welding. Submit the iad report as instructed on the event website. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. To perform any type of worthwhile analysis, the design team decided the geometrical limits of the impact attenuator should be determined. Additional information shall be kept concise and relevant. Finite element model complete simulation was done using finite element model developed in hyper mesh software. Design and development of impact attenuator for racecar safety abhishek g. The dimensions of the shell were in accordance with the requirements of the impact attenuator as mentioned in the fsae rulebook.
A two stage impact attenuator was built for testing. The simulated results, however, cannot be used directly. Design of the impact attenuator the impact attenuator is such safety structure installed on. Plascore provides a full range of certified deformable barriers, crushable core, as well as custom honeycomb configurations for a wide array of energy absorption applications. Design and development of impact attenuator for racecar safety. Design and experimental verification of composite impact attenuator for racing vehicles. The drop test was conducted from a drop height of 5 m with 150 kg of dropping mass. Our test results indicated that the specimen satisfied the requirements of b3. The companys aluminum honeycomb core is an ideal energy absorber. Formula sae standard impact attenuator fsae ia12 as per rule b3. Attenuators will not include optional radii on edges or mounting holes. The first design has been finished this is the soda can impact attenuator. Pdf design and static structural analysis of a race car. Optimization of impact attenuator design using finite.
According to the regulations of fsae 1 the designed impact attenuator, when mounted on the front of a vehicle with a total mass of 300 kgs 661 lbs and run into a solid nonyielding impact barrier with a velocity of impact of 7. Jan 03, 2015 9 the impact attenuator is designed in such a way that it can absorb more than 7350 joules of energy. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Drop test analysis of impact attenuator for formula sae car devender kumar, sachin kumar, gagandeep singh, naman khanna.
In terms of the actual impact it has on your carcompetition performance. Drop test analysis of impact attenuator for formula sae car ijsrp. Pdf design of the impact attenuator for a formula student racing. The impact attenuator was designed to absorb 7350 j of energy. This current project is carried out at philadelphia university and describes the work associated with the design, build, and test a formula student racing car in order to compete at formula student. Formula sae, impact attenuator, quasistatic testing. Through my work i had to design the geometry, considering factors such as aerodynamics, manufacturability and the connection. The design of a formula student front impact attenuator. Ive read on the fsae forums that, if a team uses the standard impact attenuator, they dont need to send a data report. So, my team is planning to build an impact attenuator out of foam for the first time ever. Epp foam material with a density of 100 gl as basic material was selected to design a lightweight impact attenuator. Thanks to that, major damage that can affect the driver, prevented by this system. Geometric modelling to perform any type of worthwhile analysis, the design team decided the geometrical limits of the impact attenuator should be determined.
This impact attenuator is manufactured using materials mentioned before. Drop test analysis of impact attenuator for formula sae car. The fsae rules require the impact attenuator have minimum dimensions of 150 mm by 200 mm by 100 mm or 5. The sole purpose of the project is to focus on a very important aspect of the vehicle which is the impact attenuator. Impact attenuator nose cone designing for formula student. Overall dimensions of the attenuator taken were 210 x 210 x 100 mm3. This attenuator is a device intended to reduce the damage. In order to research energy absorption characteristic of aluminum honeycomb material, quasistatic and dynamic outofplane compression experiments are carried out on a doublelayer aluminum honeycomb impact attenuator of one fsae racing car.
Geometry of the model this work is based on the analysis and improvement of the design of the impact attenuator and after on the design and improvement of the behavior of the links of the energy absorbing structure to the car body. It is very important to notice that it was not used all car body structure, but only the frame that. Chapter 1620 impact attenuator systems wsdot design manual m 2201. Formula sae standard impact attenuator fsaeia12 as per rule b3. Main goal of design team was to design an impact attenuator. The fsae rules require the impact attenuator have minimum dimensions of 200 mm by 200. Fsae impact attenuator manufactured from dow impaxx 700 product details impaxx 700 foam is a highly engineered, extruded, thermoplastic foam that utilizes dow proprietary process technology to maximize efficiency and minimize weight. Design and fabrication of impact attenuator for formula sae car written by harsh vardhan tripathi, maneesh kumar mishra, rahul singh published on 20180511 download full article with reference data and citations. Acceptable systems cannot be eliminated without documented justification as to why they should not be used. Jun 03, 2010 solidworks sae design project teaches students how to use solidworks software to help design a vehicle for the formula sa. Design, manufacture and testing of an impact attenuator. Design, manufacture and testing of an impact attenuator for a. Design and physical testing of impact attenuator for fsae. Design of the impact attenuator for a formula student.
Dow impaxx 700 energy absorbing foam high speed video nothing happens until about 58 seconds in. Chassis and impact attenuator design for formula student racing car. The document attached below only specifies that the report is to be written in engineering style. Design of the impact attenuator the impact attenuator is such safety structure installed on car that could absorbs energy during frontal collision by progressive deformation. The behavior of an impact attenuator for formula sae racecar has been described with detailed material selection, design methodology and physical testing procedure. Design and optimization of an fsae frame, suspension, and business portfolio submitted to the faculty of worcester polytechnic institute in partial fulfillment of the requirements for this.
This is mounted on front bulkhead of racecar as most intensive load develops in head on collision. The only constraint for the maximum volume of the impact attenuator is the nose cone of the racecar. The whole car is made according to the fsae rulebooks which makes this car the safest race car to ride on track. This project deals with building of crashprotective device for an fsae car. Design, build, and test a formula student racing car. Finally the crash event simulation has been developed by. Design and fabrication of impact attenuator for formula. Such structure should be lightweight, resistant and deformable enough to limit the. Design and fabrication of impact attenuator for formula sae. In addition to those requirements, the impact attenuator, when mounted on the front of a vehicle with a total mass of 300 kg 661 lbs and run into a solid, nonyielding impact barrier at a velocity of 7. Wpis fsae racecar requires an impact attenuator that can protect the driver and frame when mounted on the front bulkhead of the vehicle. Design of crash worthy impact attenuator for racing. Attenuator is at least 200mm wide by 100mm high for at least 200mm. All requests will have a confirmation of receipt sent to the team.
You do not have the required permissions to view the. Each automobile has an impact attenuator to protect drivers life. Also, wording such as or equivalent is not to be used when specifying these systems. Design and static structural analysis of a race car chassis for formula society of automotive engineers fsae event article pdf available in journal of physics conference series 9081. Impact attenuator, formula sae, quasistatic testing.
The system also utilizes low deflection to dissipate energy during an impact which requires minimal maintenance for resettingcreating a safer environment for road authorities and motorists alike. An overview of design optimization of impact attenuator. As for the fsae rules, the impact attenuator must be numerical and experimental analysis of an. Numerical simulation of several impact attenuator design for a. If you chose to employ the standard attenuator design, then testing is not required and there is no need to submit test data specific to your car.
Fsae impact attenuator manufactured from dow impaxx 700. Design of impact attenuator aluminum can impact attenuator we designed a shell of aluminum sheet for accommodating the cans. Vehicle collision also known as crash or vehicle accident is a dynamic phenomenon and occurs when a vehicle. An educational engineering exercise at philadelphia university munzer sy ebaid, shatha ammoura, and kutiaba jm alkhishali international journal of mechanical engineering education 2016 44. Evaluating impact attenuator performance for a formula. The importance of impact attenuator ia in reducing the collisions impact during an accident. Aluminum honeycomb is a lightweight material with high strength and strong capacity of energy absorption. An overview of design optimization of impact attenuator for. Mounting holes shown are for reference only attachment is up to the team to determine. Design and experimental analysis of an impact attenuator 57 aluminium 6082 t6 foils are commercially available. Properly fabricated and mounted impact attenuators. Fsae impact attenuator worcester polytechnic institute. By using soda can the price can be kept to a minimum since the most that will be needed to place on the frontbulk head will be 40 cans at 50 cents a piece.