Impact Attenuator Nose Cone Designing for Formula Student ......Formula Student impact attenuators,...
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Impact Attenuator Nose Cone Designing for Formula Student Racecar Zsombor Sápi, TU Budapest, [email protected] Introduction The topic of my project was designing a carbon-fiber-reinforced polymer impact attenuator nose cone for a Formula Student racecar. I used HyperMesh for my work as pre-processor, including cleaning up the geometry, meshing the surface and checking the quality of the mesh. HyperCrash was also used as pre-processor for setting up the simulation, while RADIOSS was the solver. I post-processed the results in HyperView. Development Process First I started with research to examine the possible solutions for 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. Through my work I had to design the geometry, considering factors such as aerodynamics, manufacturability and the connection between the car and the nose cone. I used PTC Creo CAD system for this task. Figure 1. Surface modeling Figure 3. Crash simulation Figure 2. Meshing Figure 4. Resultant deceleration as function of time Summary Through deceleration the peak didn’t reach 40 g and the average value stayed below 20 g while the required amount of energy was absorbed which means the safety of the driver is ensured. The main goal of the project was the weight reduction of the component. Using HyperWorks, the detailed and accurate modeling of fiber-reinforced composites became available and it helped to design a lightweight composite structure. The most difficult part was the crash simulation. In HyperCrash first I had to make the failure model working, then apply the material models which was based on measurements by the Formula Student team. Setting and optimizing these parameters in order to achieve a simulation model which represents the real life behavior of composites took an enormous effort. In the pre-processing phase I used HyperMesh. Given the fact of crash simulation, excellent quality mesh was needed. With the help of mesh quality check and modifying tools I could satisfy the required element criteria I set.
Transcript of Impact Attenuator Nose Cone Designing for Formula Student ......Formula Student impact attenuators,...
Impact Attenuator Nose ConeDesigning for Formula Student RacecarZsombor Sápi, TU Budapest, [email protected]
IntroductionThe topic of my project was designing a carbon-fiber-reinforced
polymer impact attenuator nose cone for a Formula Student racecar.
I used HyperMesh for my work as pre-processor, including cleaning up
the geometry, meshing the surface and checking the quality of the
mesh. HyperCrash was also used as pre-processor for setting up the
simulation, while RADIOSS was the solver. I post-processed the results
in HyperView.
Development ProcessFirst I started with research to examine the possible solutions for
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.
Through my work I had to design the geometry, considering factors
such as aerodynamics, manufacturability and the connection between
the car and the nose cone. I used PTC Creo CAD system for this task.
Figure 1. Surface modeling
Figure 3. Crash simulation
Figure 2. Meshing
Figure 4. Resultant deceleration as function of time
SummaryThrough deceleration the peak didn’t reach 40 g and the average value
stayed below 20 g while the required amount of energy was absorbed
which means the safety of the driver is ensured.
The main goal of the project was the weight reduction of the
component. Using HyperWorks, the detailed and accurate modeling of
fiber-reinforced composites became available and it helped to design a
lightweight composite structure.
The most difficult part was the crash simulation. In HyperCrash first I
had to make the failure model working, then apply the material models
which was based on measurements by the Formula Student team.
Setting and optimizing these parameters in order to achieve a
simulation model which represents the real life behavior of composites
took an enormous effort.
In the pre-processing phase I used HyperMesh. Given the fact of crash
simulation, excellent quality mesh was needed. With the help of mesh
quality check and modifying tools I could satisfy the required element
criteria I set.
