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There are three parts of Halo, a) the front middle section called as ‘V transition’, b) the tube around the cockpit and 3) rear mounts. The design provides the teams 20 mm area of freedom for other modification. The tests of the halo design were carried out in 2016 and 2017 and the FIA made it mandatory on every vehicle from open-wheel racing series in 2018. The tests of FIA for Halo consists of three types — 1) collision between two vehicles, 2) contact between a vehicle and the surrounding environment and 3) collisions with vehicles and debris. A test_known as chassis homologation test is carried out by applying loads from different positions on Halo. In the test a 116KN of force is applied on top of the Halo and expected it to withstand the force for at least 5 seconds. It must withstand longitudinal forces of 46kN and 83KN on the front. Also, side lateral force of 93KN is applied. The Halo has to withstand 125KN of force from above for 5 seconds without failure of any components and also from the side it should withstand with the same. The Halo is made from the Titanium and weighs around 7 kg. Unlike manufacturing the vehicle parts and other components by the teams, Halo is chosen by the FIA to be manufactured by three external manufacturers, these are CC Autosport, SS Tube Technology and V system. Adding Halo adds different challenges for teams such as weight challenge, aerodynamic challenge, structural challenge etc. In the studies of FIA, it was found that the addition of halo would protect the driver 17% of the time than 0% without halo.[1]-[3] The material used for manufacturing of Halo under the regulations of FIA is Ti6Al4V Grade 5, a Titanium alloy. This material is Sar. (See Pr oe ae: ee ne a Seater: a: A. >. a a a , (eee, ne: Ae EEE. et a . ee? re ae a eee ¢ prey

Figure 1 There are three parts of Halo, a) the front middle section called as ‘V transition’, b) the tube around the cockpit and 3) rear mounts. The design provides the teams 20 mm area of freedom for other modification. The tests of the halo design were carried out in 2016 and 2017 and the FIA made it mandatory on every vehicle from open-wheel racing series in 2018. The tests of FIA for Halo consists of three types — 1) collision between two vehicles, 2) contact between a vehicle and the surrounding environment and 3) collisions with vehicles and debris. A test_known as chassis homologation test is carried out by applying loads from different positions on Halo. In the test a 116KN of force is applied on top of the Halo and expected it to withstand the force for at least 5 seconds. It must withstand longitudinal forces of 46kN and 83KN on the front. Also, side lateral force of 93KN is applied. The Halo has to withstand 125KN of force from above for 5 seconds without failure of any components and also from the side it should withstand with the same. The Halo is made from the Titanium and weighs around 7 kg. Unlike manufacturing the vehicle parts and other components by the teams, Halo is chosen by the FIA to be manufactured by three external manufacturers, these are CC Autosport, SS Tube Technology and V system. Adding Halo adds different challenges for teams such as weight challenge, aerodynamic challenge, structural challenge etc. In the studies of FIA, it was found that the addition of halo would protect the driver 17% of the time than 0% without halo.[1]-[3] The material used for manufacturing of Halo under the regulations of FIA is Ti6Al4V Grade 5, a Titanium alloy. This material is Sar. (See Pr oe ae: ee ne a Seater: a: A. >. a a a , (eee, ne: Ae EEE. et a . ee? re ae a eee ¢ prey

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Figure 2: 3D model of proposed Halo design The 3D model of Fl Halo was subjected to FEA which includes static, dynamic and modal analysis as mentioned. Foe this the diagram below (figure 2) shows the subjected structure. The input values needed for FEA are calculated and noted. The model is then imported in Simscale software. Mesh is generated by putting the finest value.
Figure 2: 3D model of proposed Halo design The 3D model of Fl Halo was subjected to FEA which includes static, dynamic and modal analysis as mentioned. Foe this the diagram below (figure 2) shows the subjected structure. The input values needed for FEA are calculated and noted. The model is then imported in Simscale software. Mesh is generated by putting the finest value.
Thereafter, the halo was put for static analysis at first. A static analysis is conducted to study the load bearing capacity of a structure. While performing a static structural analysis steady loading and response conditions have to be assumed. The Halo is provided with Titanium material and physical properties are provided with the help of above table. A load of 128kN is applied on the front and side (different simulations are carried out) of the Halo. The total displacement variation results and the results of Von Mises Stress obtained from the static analysis after applying both the forces.
Thereafter, the halo was put for static analysis at first. A static analysis is conducted to study the load bearing capacity of a structure. While performing a static structural analysis steady loading and response conditions have to be assumed. The Halo is provided with Titanium material and physical properties are provided with the help of above table. A load of 128kN is applied on the front and side (different simulations are carried out) of the Halo. The total displacement variation results and the results of Von Mises Stress obtained from the static analysis after applying both the forces.
Next, dynamic analysis is done. The dynamic analysis comes into picture when a body is subjected to particular acceleration or deceleration where load changes rapidly. Here, inertial forces will be present and to capture their effects dynamic analysis is needed. For this analysis, a wall is placed at a distance of 1m from the Halo. The material chosen for the wall was concrete and Halo the same. The halo is then provided the velocity of 60m/s against the wall. The results are shown below. Figure 5: When load is applied on the front
Next, dynamic analysis is done. The dynamic analysis comes into picture when a body is subjected to particular acceleration or deceleration where load changes rapidly. Here, inertial forces will be present and to capture their effects dynamic analysis is needed. For this analysis, a wall is placed at a distance of 1m from the Halo. The material chosen for the wall was concrete and Halo the same. The halo is then provided the velocity of 60m/s against the wall. The results are shown below. Figure 5: When load is applied on the front
Further, a modal analysis is carried out. Modal analysis helps identify natural frequencies and modal shape of the system. It also helps in predicting dynamic behaviours of a system. The Halo set for modal analysis provided the maximum displacement magnitude. The 3-D model of halo is subjected to static structural, dynamic and modal analysis. The results of each analysis are as follows,
Further, a modal analysis is carried out. Modal analysis helps identify natural frequencies and modal shape of the system. It also helps in predicting dynamic behaviours of a system. The Halo set for modal analysis provided the maximum displacement magnitude. The 3-D model of halo is subjected to static structural, dynamic and modal analysis. The results of each analysis are as follows,
Related topics:
Finite Element Analysis (Engineering)Finite Element Analysis (FEA)Halo
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