Technical Paper
Three-dimensional dynamics of a three-axle vehicle considering the suspension geometry according to the kinematic transformers method
2020-01-13
2019-36-0237
The purpose of this work is to model the dynamics of a three-dimensional three-axle vehicle subjected to certain excitations from the ground and considering the geometry and inertia of the suspension elements according to the “kinematic transformers” method. The chassis is considered a rigid body with six degrees of freedom (three positions and rotations). The tire is a compliant element, which receives vibration from the ground and transmits to the wheel. Unlike simpler computational models, which make a direct connection between the wheel and the chassis by means of a spring and damper, the influence of the suspension geometry and inertia of its elements are considered. In this case of study, the suspension studied is the independent MacPherson in each wheel, although the methodology would be applied to other kind of suspensions, once its geometry is known. The kinematic transformers method is applied to study the cinematics of the suspension.