Ampto
05-29-2013, 10:25 PM
Dear fellow FSAE peers.
Firstly I'll introduce my self, I'm the chassis/dynamics engineer for this years team at the University of Ballarat. The team as been on and off again over the last few years and we have raised the project from the dead after a 5 year break (I'm still debating weather this was a good idea!). We have finished most of the design phase and we are keeping things pretty simple at this stage.
Now onto that engineering stuff...
How many teams are now using modal frequency simulation of the chassis as a design parameter?
I've approached the design of the chassis by finding the best compromise between mass and stiffness rather then just aimlessly triangulating to meet x amount of stiffness. It just so happens that the frequency of an object relates those two perfectly. I've used both the standard torsional twisting model and the frequency model to help direct the design of the chassis and compare the two methods for accurately, i figure if torsional stiffness is increasing as well as the torsional mode frequency i must be doing something right!
I've seen a few things floating around the forums and well as a few papers but i haven't seen a decent discussion on this.
Cheers Patrick
Firstly I'll introduce my self, I'm the chassis/dynamics engineer for this years team at the University of Ballarat. The team as been on and off again over the last few years and we have raised the project from the dead after a 5 year break (I'm still debating weather this was a good idea!). We have finished most of the design phase and we are keeping things pretty simple at this stage.
Now onto that engineering stuff...
How many teams are now using modal frequency simulation of the chassis as a design parameter?
I've approached the design of the chassis by finding the best compromise between mass and stiffness rather then just aimlessly triangulating to meet x amount of stiffness. It just so happens that the frequency of an object relates those two perfectly. I've used both the standard torsional twisting model and the frequency model to help direct the design of the chassis and compare the two methods for accurately, i figure if torsional stiffness is increasing as well as the torsional mode frequency i must be doing something right!
I've seen a few things floating around the forums and well as a few papers but i haven't seen a decent discussion on this.
Cheers Patrick