Composite Analysis of Field Horizontal Long‐Duration Impacts for Truck and Trailer

ABSTRACT Long‐duration vehicle impact events are experienced during turning, braking, acceleration and deceleration. These events make unitized packaging susceptible to slip or tilt when the location of their centre of gravity changes. The large amount of field‐collected long‐duration data requires processing and composite analysis to develop a representative profile in order to replicate the long‐duration impact in the laboratory simulation. Based on the prior field data of long‐duration impact, this study introduces composite analysis for the collected data emphasizing on the maximum acceleration and the maximum equivalent velocity change. The shock response spectrum (SRS) of these maximum impact events is also studied for identifying the possible amplification frequency. The field data generated composite profiles in the lateral and longitudinal directions were compared with EUMOS's lateral/rearward and deceleration orientations, respectively.