The document discusses the chassis design process which includes modeling, testing, and manufacturing. It provides details on: 1) The key functions of a vehicle chassis which are to provide mounting points for components, rigidity for handling, and occupant protection. 2) Common CAD and CAE software used for modeling and testing including CATIA, CREO, SOLIDWORKS, ANSYS, and LS-Dyna. 3) The CAE analysis process of pre-processing, solution, and post-processing to simulate and optimize chassis design virtually before manufacturing. 4) Manufacturing considerations for the chassis including details, fillets, holes, and the material selection of structural steel ST37.

1. Presented by
Ameya P. Nijasure

2. RECOGNITION
OF NEED
MODELING
(CAD)
TESING
(PROTOTYPE
& CAE)
MANUFACTU
RING
FEEDBACK

3.  Provide mounting points for the suspensions, the steering
mechanism, the engine and gearbox, the final drive, the fuel
tank and the seating for the occupants
 Provide rigidity for accurate handling;
 Protect the occupants against external impact.

4. • CATIA
• CREO
• SOLIDWORKS
• NX-CAD, etc.
CAD
• ANSYS
• NX - NSTRAN
• LS dyna, etc.
CAE

5. Pre Processing
• material properties
• modeling(CAD model)
• connections in assembly
• meshing (discritization)
• loads and boundary conditions
solution
• creating element matrix equation
• Assembly of element matrix equation
post processing
• results displacements stress temp distribution
etc.
• graphs/lists/tables
• report generation etc.

6. Fillets, chamfers.
Surface , volumes.
Holes and other details Etc.

7. ADVANTAGES: LIMITATIONS:
 Saving time and money by
reducing the number of
prototypes required.
 Accepts new design concept .
 Improvements and
modifications
 Commercial software packages
and the required hardware.
 High investment cost
 Gives solutions or results, not
remedies.
 Analyst must be proficient

9. MATERIAL OF THE CHASSIS IS AS PER IS: - 9345
STANDARD IS STRUCTURAL STEEL WITH ST37
Material Property Value
Ultimate Tensile Strength 370 to 490 N/mm2
Modulus of elasticity 2.10 x 105 N / mm2
Poisson Ratio 0.29
Radius of Gyration R
114.30 m

10. Meshing is the process of breaking up the model into
smaller pieces that can be solved by the software using advanced
matrix math and then merged together to show the correct result
for the whole.

11.  BC
• FIX SUPPORT
• CYLINDRIVCAL
SUPPORT
• TEMP ETC.
 LOADS
• FORCE
• PRESSURE
• CONVECTIONS ETC.