Rear lower control arm loading
Rear lower control arm loading
(OP)
thread800-169037: Load calculation for control arm design?
Hi All,
I've had a look through the above thread after my search of the forums.
What i'm trying to do, i'm designing lower control arms for my sports sedan (front wheel drive). Now I'm trying to calculate the forces that will be acting on the LCA.
So far, my understanding goes as such;
-Car will be driven mainly on the street with occasional circuit racing
-Design the LCA to accept a "shock" from a pothole
-Factor of Safety of 4-5
How can I begin calculations to workout the forces present on each mounting point of the control arm so I can load the data up in FEA? (LCA mounts to hub, shock to LCA, LCA to chassis)
I appreciate your help,
Kind Regards,
Chris
Hi All,
I've had a look through the above thread after my search of the forums.
What i'm trying to do, i'm designing lower control arms for my sports sedan (front wheel drive). Now I'm trying to calculate the forces that will be acting on the LCA.
So far, my understanding goes as such;
-Car will be driven mainly on the street with occasional circuit racing
-Design the LCA to accept a "shock" from a pothole
-Factor of Safety of 4-5
How can I begin calculations to workout the forces present on each mounting point of the control arm so I can load the data up in FEA? (LCA mounts to hub, shock to LCA, LCA to chassis)
I appreciate your help,
Kind Regards,
Chris





RE: Rear lower control arm loading
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: Rear lower control arm loading
What about the force from the spring/shock? Could you give me a simple example on the FBD calculation?
Cheers,
RE: Rear lower control arm loading
I've included an FBD. Fz and Fy are obvious by inspection, Tx less so.
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: Rear lower control arm loading
I had a look at that diagram, it looks similiar to what I have at the moment although I have less forces, what is the force in the Y direction acting from?
Sorry to pick your brains, I've looked through most of my books on LCA design/compliance but I can't seem to find any in the books I have.
How would you pick your "maximum seen" force from the shock combo? F=kx ?
What force would you use as a "maximum seen" for the CP to begin the FBD analysis?
Once again Greg, appreciate your effort and time.