What is the typical bending stiffness and torsional stiffness of a chassis of hatchback car?
What is the typical bending stiffness and torsional stiffness of a chassis of hatchback car?
(OP)
I know there are lots of factors come into play when determine the bending stiffness. I am more concerned about the material and the design.
I'm using high carbon steel as the material. The density is 7490kg/m^3, Young Modulus=198000 MPa, and Poission's ratio=0.29.
I modeled the frames of the chassis using hollow rectangular tube. (One PHD student told me the hollow tube will give a better answer).
the value of bending stiffness is 31931.87866 N/mm
the value of torsional stiffness is 27646.14029 N.m/deg
please spare some times to answer
thanks
I'm using high carbon steel as the material. The density is 7490kg/m^3, Young Modulus=198000 MPa, and Poission's ratio=0.29.
I modeled the frames of the chassis using hollow rectangular tube. (One PHD student told me the hollow tube will give a better answer).
the value of bending stiffness is 31931.87866 N/mm
the value of torsional stiffness is 27646.14029 N.m/deg
please spare some times to answer
thanks





RE: What is the typical bending stiffness and torsional stiffness of a chassis of hatchback car?
The bending stiffness is usually numerically smaller than the torsional stiffness in those units.
This of course assume sthat you test technique is correct, it is easy to get big errors in this test both in real life and FEA.
Incidentally modelling a modern car structure as a series of rectangular beams rather misses the point. The hard bit is the joint design.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: What is the typical bending stiffness and torsional stiffness of a chassis of hatchback car?
what should be MINIMUM MANDATORY VALUES for BENDING STIFFNESS AND TORSIONAL RIGIDITY for MONOCOQUE CARS ?
are there any particular rules , regulation or standards specifically defined for these parameters ??
RE: What is the typical bending stiffness and torsional stiffness of a chassis of hatchback car?
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?