Hi there,

I want to simulate the dynamic behaviour of a vehicle´s chassis, formed by an assembly of bolted beams, during a **"braking while turning" maneuver **and wonder whether it could be acceptably simplified with either of these two approaches rather than going for a transient or explicit dynamics analysis:

1.1. Static structural analysis setting the corresponding braking and centrifugal accelerations, besides gravity, with 6 DoF constraint in 3 points just to avoid rigid-body motion and inertia relief "on" to balance the applied accelerations.

1.2. Initial Rigid-Dynamics analysis to obtain maximum reaction forces and moments to be exported as motion-loads to a second conventional Static structural analysis.

Another involved issues are:

2. whether to simplify the geometry with midsurfaces to mesh with shell-elements or go directly for solid-shell elements from the original 3D solid model.: pro&cons of each option?

3. how to apply the weight of the non-modelled geometry of the vehicle´s bodywork,seats, passengers,etc. Here I intend to use remote boundary conditions scoped to the fixation areas in the frame and attached to the corresponding mass points located in the different centers of gravity... sounds good?

4. How to model the bolted connections and beam contacts? Related to this, is the Inertial Relief approach compatible with eventual nonlinearities introduced by beam contacts and bolt pretensions?

What do you reckon? How would you go about it anyway?

Any suggestions/hints will be welcome! Thanks in advance.