hullo guys,
i am working on the force analysis of our car and following is the procedure i followed:
1 i considered corner+breaking condition and calculated the forces and moments as follows:
A.i assumed breaking acceleration to be 2g and wt of the car to be270 kg so friction force between tyre and ground is 5298N
B.Then wt force is 2649N and i assumed breaking force by the caliper to be 1200 N
C.then i assumed cornering force to be 2g and got force to be 5298N....i assumed d extreme case and applied all these forces on 1tyre as in extreme case(corner+ breaking) car will be on 1 tyre
MOMENT calculations:
A i transferred these forces to the knuckle centre .i got 132 Nm of moment because of wt force, 84Nm because of caliper ,265Nm because of friction (bt grnd n tyre)and 1345 Nm because of lateral force i didnt consider trailing here.
2 Then i applied these forces in ansys
A i applied the cylindrical constraint on the a arm pivots with only tangential motion free and i applied cylindrical constraints on the steering joint with all the motions fixed( i am doubtful about it)
B i got factor of safety around 1.5 ....guys correct me if i am wrong and any suggestion is appriciated ....as for now we r thinking of using aluminium but can we use tin??which 1 is better??/..thank you