WorldSID 50th - W50-00000

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WorldSID stands for Worldwide harmonized Side Impact Dummy, a crash test dummy to be used for the assessment of vehicle occupant injury risk in lateral impact. It is designed to be used as a standard, regulatory test tool as well as a research tool for a multitude of impact conditions.

Simulation Models

Dummy Features

Head

The head includes two major subassemblies: the skull-skin assembly and the instrumentation core. Sensors are included to measure the head center of gravity linear accelerations (x, y, z), head center of gravity rotational accelerations (x, y, z), and head tilt (x, y). The upper neck load cell is also considered part of the head assembly.

Neck

The neck assembly includes three major subassemblies: the neck, the neck bracket, and the neck shroud. The neck includes top and bottom interface plates that are connected to the central rubber column by means of half-spherical screws, which are provided with tuning buffers. The neck sits between the upper and lower neck load cells. The lower neck load cell is mounted on the neck bracket. This adjustable bracket also holds the T1 tri-axial linear accelerometer with its sensor module. The neck shroud attaches to the skull/skin assembly of the head.

Shoulder/Thorax/Abdomen

The shoulders/thorax/abdomen assembly is a rib-type structure. One shoulder rib, three thorax ribs, and two abdomen ribs are mounted onto the left and right side of a rigid spine structure. A foam rib covering is inserted between the metal ribs and the suit. Left and right sides are symmetrical, with the exception of the instrumentation. The shoulder includes a load cell with integrated gleno-humeral joint. Every rib is instrumented (struck side only) with an IR-TRACC unit to measure rib displacement, and a tri-axial linear accelerometer on the inside of the struck side rib. The spine box is instrumented with upper (T4) and lower (T12) spine box tri-axial linear accelerometers, two rotational accelerometers (x, z), two tilt sensors (x, y), upper and lower temperature sensors, nine sensor modules and two DAS modules (mounted in the docking station). The spine box incorporates mounting brackets for the neck on top, and lumbar spine at the bottom. The shoulder and thorax ribs are connected at the front by a flexible sternum. The two abdominal ribs are connected at the front by a flexible abdomen rib coupling.

Half Arms (Standard)

The half arm attaches to the shoulder load cell (or its structural replacement). It has a skeleton made of two spring steel plates, between which two tri-axial linear accelerometers and their sensor modules are mounted. The half arm flesh includes a hole at the shoulder for a rubber shoulder plug. Left and right half arms are almost symmetrical; the non-symmetry is due to the split in the flesh to access the skeleton and instrumentation.

Full Arms (Optional)

The full arms connect to the shoulder load cell and the same shoulder plugs are used as with the half- arms. A full arm includes an upper arm assembly, lower arm assembly, and hand, and has articulations in the elbow and wrist. The full arm includes the following instrumentation: upper and lower arm load cell, elbow and wrist tri-axial accelerometers, elbow load cell and an elbow rotation potentiometer. Upper arm flesh splits on the inside to access the skeleton and instrumentation. Lower arm flesh does not have a split, but slides onto the skeleton from the wrist.

Lumbar Spine

The lumbar spine incorporates a flexible rubber element that attaches at the top to a spine box bracket and at the bottom to a sacro-iliac interface plate. The sacro-iliac interface plate, like the top of the spine box, includes a connection for lifting the dummy.

Pelvis

The pelvis includes the instrumented pelvis skeleton and the one-piece pelvis flesh. The pelvis skeleton consists of two semi-rigid, symmetrical pelvis bones that are connected at the front by a pubic load cell, and at the rear by the sacro-iliac load cell. The sacro-iliac load cell connects to the pelvis bones by means of interface plates. At the rear of this load cell, the pelvis tri-axial linear accelerometers, two pelvis tilt sensors, and a sensor module mount. A DAS module docking station is mounted at the bottom of the sacro-iliac load cell. The lumbar load cell mounts at the top/inside of the sacro-iliac load cell.

Upper Legs

The upper legs incorporate all components from the hip joint up to and including the knee. The upper leg flesh splits in the proximal upper leg flesh (closest to the pelvis) and the distal upper leg flesh. Instrumentation of the upper leg includes the femur neck load cell, upper and lower femur load cells, inboard and outboard knee load cells, knee rotation potentiometer, one sensor module, and two DAS modules.

Lower Legs

The lower leg includes the lower leg skeleton assembly, lower leg flesh, and molded foot/shoe. The lower leg flesh splits at the rear to access the skeleton and instrumentation. Instrumentation of the lower leg includes upper and lower tibia load cells and three ankle rotation potentiometers.