Designing Rear Wing Using Solidworks Software Essay

This study is about to plan a rear wings for race auto and do analysis on it and the analysis is based on emphasis, supplanting and factor of safety. For the design of the rear wings solidworks package is used. Then the rear wings should be analysed by the tool solidworks simulation and solidworks flow simulation. By the completion of this study an applied scientists are able to plan, theoretical account and analyze a constituent utilizing finite element analysis of rear wings of individual seater expression Renault auto. The company will be looking for the rear wing design, angle of onslaught, dimension of the rear wing and support and the stuff for it.

Software used for design ( Solidworks 2010 )

Solidworks 2010 version is traveling to be used for the design of the rear auto wings. Ruiz ( 2010 ) demonstrates that solidworks 2010 is the 1 of the recognized 3D mechanical CAD package in the market. It has ability to make parametric 3D solid geometry which can be used in different industry. It was introduced in 1993 by the Solidworks Corporation as a rival to the other 3D CAD package like AutoCAD and Pro/ENIGEER. Solidworks focused on assisting to do better and faster design. 3D CAD helps plan to be more productive and PDM package helps in avoiding dearly-won mistakes and simulation package helps in prototyping procedure.

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Rear wings are normally made of C fibre and used in race auto to make downforce. Air flows onto the rear wing with a velocity of the auto in consecutive way and as following the Newton ‘s Law every action has a reaction, by which the airfoil is pushed towards the land by the air. And the force which is created by the wings so the auto is pushed onto the land is known as downforce. ( hypertext transfer protocol: //www.f1technical.net/articles/9 )

The efficiency of the rear wing is depending on some parametric quantity which is as follows

Aspect ratio: The sum of the downforce generated by the rear wing is calculated by the size of flying. If the rear flying size will increase the downforce will be addition every bit good. The ratio of length and breadth of wing is known as Aspect ratio and higher the Aspect ratio efficient of the wing will more.

Angle of onslaught: The sum of the downforce generated is depending on the angle of attach as good. The greater the angle of onslaught the more downforce will bring forth.

Drag: when the downforce addition at the same clip some unwanted drag addition by the angle of onslaught. Actually the downforce generated by the wing works in a perpendicular downward way nevertheless the retarding force works in opposite way.

( hypertext transfer protocol: //www.nas.nasa.gov/About/Education/Racecar/rearwing.html )

( hypertext transfer protocol: //www.hooked-on-rc-airplanes.com/how-airplanes-fly.html )

Design of rear flying through Solidworks

The auto rear wing is designed in solidworks 2010 SP 3.0 and assembled. There is some specification given by the writer to be designed and calculate. The dimension of wing is taken from the race auto in workshop of the university and the tallness of the wing from land, the thickness and tallness of support and stuff should be taken by ain. To acquire the truth, the design of wing should be created by the NACA profile package. By the aid of NACA profile package the user can plan the wing based on chord length as shown in figure.

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Figure 1 NACA profile cord length

And the user can export the design straight to the solidworks as shown in figure.

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Figure 2 wing profile directing to solidworks

As the design of the flying semen on the solidworks by the aid of move entities tool demand to be fixed with the needed angle and place. As the demand of the writer there should be two wings, the base flying demand to be at 30 degree angle of onslaught and the 2nd flying demand to be at 50 degree angle of onslaught. So by the aid of transcript entities tool need to do another transcript of wing and set them at the needed angle by rotate entities as shown in figure.

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Figure 2 wing designs in solidwork

After planing the rear wing in study, there are some tools in solidworks like boss-extrude and choosing the plane from mention geometry and the mirror tool by the aid of them design of rear wing will finish as shown in figure.

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Figure 3 Design of rear wing

The dimension of the wings and the support of the wings are shown in figure.

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Figure 4 Rear wing and support dimension

Now the rear wing and the support demand to be assembled. By the aid of ( assembly portion ) insert the both the constituent and so use the needed couples to the constituent. The couples which is used is shown in figure.

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Figure 5 Showing assemblies of wings and support

Flow simulation

Flow simulation is the fluid flow simulation and thermic analysis system which is wholly fixed in solidworks. It takes the trouble out of computational fluid kineticss. The user can easy imitate flow of fluid, transportation of heat and the force applied by the fluid on any peculiar design. It save clip and cost for different design by extinguishing the mistake in CFD ( computational fluid kineticss ) . It helps the applied scientist to hold a brief information about the design before the production.

( hypertext transfer protocol: //www.solidworks.com/sw/products/fea-cfd-simulation-sofware.htm )

Solidworks Flow simulation

To add the solidwork simulation and flow simulation in the solidworks, there is an Add-ins tool which is shown in figure.

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Figure 6 screening Add Ins tool

By snaping the Add-ins option the user is able to add the flow simulation and the solidwork simulation. After acquiring the flow simulation in solidworks the following measure is to make new survey by snaping the ace as shown in figure.

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Figure 7 Wizard Unit

In this measure user can specify the unit of design which is SI unit.

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Figure 8 Wizard Analysis

In this measure the flow of air is chosen as the external and close pits consider as both exclude pits without flow and exclude internal infinite and the flow is chosen as air simulation.

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Figure 9 Initial conditions ( velocity of air )

In this measure user is able to utilize the air flow parametric quantities and way. The velocity of the auto is 80 Mph, so it is 35.7 m/s. The speed is -35.7 m/s in the way of x axis the face of the rear wing. However the negative mark stands for the way of the air towards the front face of rear wing. And in the following measure and in last the mesh should be taken as 5 criterion and click coating.

After completing the ace tool, the user demand to place the dimension computational Domain where the air will flux as shown in figure. ( Input informations )

The user needs to use end for the way of force and force per unit area for design which is shown in figure.

The last measure of flow simulation is to snap on the tally tools to run the flow simulation analysis which is shown in figure.

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Figure 13 The pointer demoing the air impacting on the rear wing

Flow simulation of the different stage for the rear wing

( Figure )

FEA analysis

Solidworks simulations utilize a different figure of mechanisation tools to merely the analysis procedure which aid to work more expeditiously. It meshes both the parts and assembles them. The user can use the fixed and directional restraints. In the consequence user will acquire the analysis of safety factor, supplanting and emphasis.

( hypertext transfer protocol: //www.javelin-tech.com/main/products/solidworks_simulation.htm )

The user needs to take the stuff for the wing and the support for the wing. As for the choice of stuff CES package is used and as the demand of company the stuff of wing should be composite and for support is aluminium. The stuff selected for wing is BMI/HS C fibre which belongingss are shown in figure.

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Figure 14 The stuff belongingss for flying

The stuff selected for the support of the wing is aluminium alloy 6063-T6.

After choosing the stuff for the both the constituent user demand to repair the support by the aid of fixed geometry tool and in last run the simulation. In the consequence the user will acquire the whole analysis which is shown in images.

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The bluish coloring material shows the minimal supplanting which is 1.000e-30 which is about 0.

The ruddy coloring material shows the maximal supplanting which is 1.36748 millimeter which is occurred on the rear wing

Figure 15 Supplanting Survey

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Figure 16 Factor of safety survey

Dimarogonas ( 2000 ) states the factor of safety is the ratio of a certain confining emphasis of stuff and the figure greater than integrity.

Factor of safety =

Factor of safety of rear wing is 24.73.

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The maximal emphasis ( 8.5314e+06 N/m^2 ) is located on the corner of the wing where it confronting a batch of emphasis as shown in figure Figure 17 Stress analysis survey

Decision

After executing all the design and analysis it seems like the design is suited for the auto rear wing and it ‘s accomplish the full demand and the status. By finishing this study it is clear that solidworks package is really helpful in design field and it is necessary to analysis the design before directing to the production. Softwares keeps the emphasis analysis consequence while the auto is in gesture by the consequence the applied scientist can do the necessary alterations to do it for effectual and economical.