US DOT SID Side Impact Dummy - SA-SID-M001

 

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DOT SID Side Impact Dummy The DOT SID was adapted from the Hybrid II 50th Percentile Male Test Dummy to provide human-like acceleration responses in the lateral direction when testing automotive side impact crashworthiness. SID was developed by the Highway Safety Research Institute at the University of Michigan, under contract to the National Highway Traffic Safety Administration. Modifications and test procedures were made by Calspan, with further enhancements by the Vehicle Research and Test Center (VRTC).

Simulation Models

Construction

Head, neck and neck bracket are Hybrid II 50th Percentile Male Test Dummy design. Head and neck are laboratory certified per Hybrid II test procedures.

Upper torso was redesigned to give calibrated responses to impacts from the left or right side with reversal of certain interior components. Arms, omitted to prevent flailing and complication of torso response, are replaced by foam blocks under the torso jacket and compensatory weight is added to the thoracic spine and rib cage. Accelerometer mounts are provided at T1 and T12 (1st and 12th thoracic vertebrae).

Rib cage has five pairs of spring steel ribs with energy absorbing damping material applied to ribs with adhesive and covered with urethane shrink fit. Lead ballasts are mounted on rib cage to simulate human acceleration response. An adjustable hydraulic shock absorber controls motion.

Lateral displacement is measured by a linear displacement transducer mounted between the ribcage and thoracic spine. Lateral acceleration can be measured by accelerometers mounted on rib ballasts.

Rib wrap made of Ensolite ® surrounds ribs to modify response. Yellow urethane torso cover separates into left and right halves using front and rear zippers.

Lower torso, modified from Hybrid II, responds to impacts at hip rotation centers (H points) from left or right side. Accelerometer mounts provide for lateral, front to back, and vertical accelerometers.

Lumbar-to-pelvic adapter bracket has added socket for pelvic angle gage to aid dummy positioning.

Legs are Hybrid II design with the addition of pivots in the femur load links to allow lateral motion of knee in relation to upper leg to prevent breakage of leg component.