# Calculating automotive suspension wishbone loads by considering the structure as a 3D Truss

I am trying to calculate the loads in the suspension components of a typical car double wishbone setup. I have found a thread on the www.fsae.com forum, which seems to be exactly the kind of thing I am looking for. It involves considering the assembly as a 3D truss, and building up matrices, containing

1. the unit vectors and cross products at the mounting points of the struts at the upright
2. the forces and cross products at the tyre contact patch. Which when the inverse of matrix 1 is multiplied by matrix 2, results in a third matrix containing the loads on the struts.

My question is, can someone give me the name of this method of truss analysis, and any textbooks / resources that specifically cover this method?

• I think most textbooks refer to it as the "matrix method," or something similar. It's really just applying finite element equations to a system. If you haven't had any formal training on the subject, you will probably find it hard to get into. Aug 17, 2015 at 11:56