Abstract: A finite element model for stabilizer rod is established based on nonlinear characteristics of suspension multibody system, the strength of stabilizer rod is analyzed with the wheel hop acquired in roadtest as input, and its modeling methods are evaluated through comparing the critical loads obtained by applying compression rod instability theory and bench test. The results of real vehicle verification show that the model for stabilizer rod based on nonlinear characteristics of suspension system can accurately predict the critical loads and the stress of stabilizer rod while the results of compression rod bench test have certain error, and the instability theory can not directly applied to strength check for stabilizer rod.

Key words: Stabilizing Linkage, Nonlinear Suspension, FEA, Load extraction, stabilizing rod, suspension nonlinearity, FEA, load extraction