Natural frequency studies can help you visualize the dynamic
character of a structure. At each natural frequency, the structure
will tend to deform. Design changes like adding stiffeners or mass
will affect natural frequencies. What isn't visualized is the
amplitude of the deformation-only the eigenvalue...sort of a
unit-vector if you had Halliday and Resnick for freshman college
physics. So depending on the amplitude of the force and the damping
you will see more or less response from the structure. cosmos works
doesn't do harmonic analysis or any kind of dynamic simulation
besides impact and natural frequency analysis. It does display the
displacement and deformation that can be compared between cases of
loading, materials and geometry.
Natural frequency studies can help you visualize the dynamic character of a structure. At each natural frequency, the structure will tend to deform. Design changes like adding stiffeners or mass will affect natural frequencies. What isn't visualized is the amplitude of the deformation-only the eigenvalue...sort of a unit-vector if you had Halliday and Resnick for freshman college physics. So depending on the amplitude of the force and the damping you will see more or less response from the structure. cosmos works doesn't do harmonic analysis or any kind of dynamic simulation besides impact and natural frequency analysis. It does display the displacement and deformation that can be compared between cases of loading, materials and geometry.
It seems to me that what you are after is a stress/straindistribution under dynamic loading. Without purchasingvehicle dynamics software, your best bet is to manually calculatethe impact your worse case dynamic load based on your vehiclemasses and suspensions and do a static analysis using that load. That will give you a rough idea what stresses your vehiclewill encounter.