Fender Design - Wheel Arch Challenge

WHEEL  ARCH  DESIGN  CALCULATION  WHICH  SATISIFIES ACCORDING  TO  EUROPEAN NORMS 

Introduction 

       The wheel arch is a  circle which is laying on least edge of fender which at most outer of the fender . Generally its a need a clearance value between fender wheel arch and wheel base it the norms for fender design is changeing according to different countries . for automotive fender design its must be satisfies the wheel arch norms for pedestrian saftey .

                                        

1 . DIFFERENT NORMS AND PARAMETERS OF DIFFERENT COUNTRIES 

     1.1 US NORMS

               According to US norms thats the every 10º of wheel arch is considered starts from -20º . That which L value inbetween wheel arch and fender arch is to be maximum 5mm. Acording to US NORMS 

                     

     1.2 JAPANESE NORMS 

                      The japanese norms conisder three points tire, hub ,cap and fender . Which legnth  is to be above 5mm 30º forward and 50º reverseward 

 according to central vertical axis 90º

     1.3 EUROPEAN STANDARDS AND NORMS 

                     An European norms diffrent from others nations norms which the lenght L value compared with 5 sctions which is SA SB SC SD SE .

       Which the distance is to be above 10mm for different sections which is to be satisfy . 

                                 

    For Legnth arc calculation we consider european standards because it satisfies all 3 norms .

Process Proceding for European norms

• Make a vertical line from centre of orgin of tire to edge of wheel arch at 90º
• With regarding SA  to  SB 30º front  and to create 50º rearward for SC
• SE is creating which intersect from horizontal line 150mm for creating SD make centerpoint for SC & SE              

                                            

  The distance between fender arc and wheel base is to be measured from top view 

                           

Distance  has to be measured SA SB SC SD SE 

              Distance between SB 

                                       

         

                  Distance between SA 

                                    

                Distance between SC

                               

                                     

                Distance between SD

                                     

                 Distance between SE

                                   

            

                          

OBSERVATION  TABLE 

               SECTIONS                 CLERANCE MEASURED (MM)          TEST RESULT 

                    SA                                    9.9490                                       FAIL

                    SB                                    10.0000                                     PASS

                    SC                                    2.8875                                       FAIL  

                    SD                                    0.1139                                       FAIL

                    SE                                    5.9973                                       FAIL

CONCLUSION 

         The Calculation for Wheel arch did not satisfies the European standards  only SB  Section is to pass the test 

Since the test failed to achieve the norms . so have to make suggestion for styling team to change the design according to suggestions .

section SA SC SD SE failed to achieve norms