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This reearch presents a concept using effective road profile to calculate road loads. The method uses existing vehicle road load data, simplified vehicle dynamic model and simple tire model to create effective road profile. Then the simplified vehicle model is updated to reflect the vehicle changes of a new vehicle. Run the simplified new vehicle model to calculate road loads. The application of effective road profile in laboratory simulation is introduced. Preliminary CAE road load simulation using the effective road profile is presented.

The influence of local instability of laminated composite components in compression has been investigated. A mathematical strength model to relate the elastic and maximum strengths of the plate to the sub-element geometry of box type composite component is presented. The modes of collapse of these components when subjected to axial crush loading are discussed. The strength models are compared with various test data of plates with different geometries and layup configurations. These models are extended to be applied to box type composite components and show to correlate well with test data of several fiberglass columns. Also in this paper several design charts for sizing thin wall laminate composite columns are presented and several modes of collapses are discussed.