WorldSID-5F Small Female Dummy

Available Models

  • Humanetics- W5-0000 (ATD Assembly)

Overview

The European commission has been supporting new developments in vehicle safety through subsequent framework projects. Worldwide, vehicle safety experts agree that significant reductions in fatalities and injury numbers could be achieved by deploying appropriate passive safety strategies. In an effort to reduce the road injuries, the FP6 Advanced Protection System, APROSYS Integrated Project (IP) developed and introduced critical technologies that improve passive safety for all European road users for prioritized accident types and levels of crash severity.

Under this European commission strategy, the SP5 biomechanics project, one of the nine Sub-projects, was tasked to develop a new WorldSID 5th percentile female dummy. Since the WorldSID 50th percentile dummy was successfully developed with an overall Biofidelity of 7.6 on a scale of 10 according to ISO TR9790, the SP5 decided to scale down the design concepts from the WorldSID 50th dummy to develop this new WorldSID small female dummy.

The first prototype dummy was assembled at the beginning of October 2005. The prototype dummies were evaluated in 2006-2007 by Transport Canada and by the APROSYS members BASt, INRETS, LAB, PDB, TRL and UPM INSIA. Revision 1 was developed in 2007-2008 to address comments from these groups based on the prototype tests.

The revision 1 dummy, SBL B, is comprised of changes in the half arms and the suit (anthropometry and arm biomechanics), the thorax (rib durability, sternum), the abdomen area and the lower legs (mass distribution). Also an optional 2D IR-TRACC was developed to measure deflection in anterior posterior and lateral direction to address thorax oblique loading sensitivity. Further, the internal wiring system was developed to improve connector reliability and durability.

The current build level is SBL-C. The changes in build level C were initiated as a result of the APROSYS project SBL-B evaluation. These changes are related to handling and durability only and they are not expected to change the dynamic response. The changes include:

Increased rotation angle of the 2D-IR-TRACC to 2x 45 degrees about z-axis; Left and Right symmetric design of the 2D-IR-TRACC spine interface; electrical cable robustness and ball joint retaining improvement at 2D-IR-TRACC small end; Improved lifting bracket for better handling; Shoulder ball joint play eliminated;  Reduction metal-to-metal contact in lumbar area; Development of WorldSID style lower leg and integrated foot & shoe, design of low weight tibia load cell. The elastic resistance of the ankle joint dorsi-plantar flexion was eliminated and replaced by adjustable friction to enable easier foot positioning to follow the vehicle floor and foot pan.’

Simulation Models

Humanetics offers highly detailed and fully validated Finite Element Models of its dummies in the codes LS-DYNA, PAM-CRASH, ABAQUS and RADIOSS, along with FE modeling consultancy services.

Dummy Features

Head and Neck

The head consists of a molded one-piece PVC skin, polyurethane skull, and an instrument core. The one-piece molded skin and skull provide greater repeatability for both testing and manufacturing. The instrumented core consists of an aluminum core with an accelerometer and a dual axis tilt sensor. The neck was developed based on the EuroSID-2 neck with aluminum discs and rubber end buffers to simulate the dynamic response of the human neck under rotation, flexion and extension conditions.

Shoulder and Upper Torso

The shoulder is represented by a rib module and a shoulder joint to simulate human range of motion. The thorax rib case consists of three rib modules and the abdomen consists of two rib modules. Each rib module has an inner rib with dampening material and an outer rib to form the contour of a human body. The dummy was designed symmetrical about the middle sagittal plane. Each rib is instrumented with a deflection measurement device, IR-TRACC, and a linear triax accelerometer. Two optional DTS G5 data acquisition units were built inside the spine box. The WorldSID small female dummy features 2D IR-TRACC's as an option to enhance the oblique impact sensitivity.

Lower Torso

The lower torso consists of a compliant polymer pelvic bone struct­ure and a pelvis flesh with PVC skin filled with urethane polymer. This structure simulates a human like mass distribution and stiffness. A flexible lumbar spine was designed to simulate the shear motion between the upper and lower torso.

Half Arm

The half arm consists of a plastic bone, PVC skin, urethane polymer and foam. The design provides additional range of motion for the shoulder. The half arm bone bending characteristic is based on small female biomechanical test data. The half arm is left-right symmetric and features a reference line for set-up purposes.

Leg and Foot

The upper and lower leg consists of PVC skin, urethane polymer with a lightweight metallic bone structure. The femur bone represents an anthropometric Greater Trochanter and the knee provides human-like joint range of motion. The foot and shoe are combined in one piece molded urethane with a composite bone. The ankle joint has rubber elements to represent human-like ankle joint stiffness and range of motion.

Technical Specifications

Instrumentation

Location Description Channels Part No.
Head:
Linear Acceleration
Rotational Acceleration
Ax, Ay, Az
Ax, Ay, Az
7268C-2000
7302BM4
Neck:
Upper Neck Load Cell
Lower Neck Load Cell
Fx, Fy, Fz, Mx, My, Mz
Fx, Fy, Fz, Mx, My, Mz
W50-71000
W50-71000
Shoulder:
Load Cell
Deflection
Linear Acceleration
Linear Acceleration
Fx, Fy, Fz
Dy
Ax, Ay, Az
Ax on part W5-3156 (alt.)
W5-7101
W5-7103
7268C-2000
7264C-2000
Thorax:
T1 Linear Acceleration
T4 Linear Acceleration
T12 Linear Acceleration
T12 Rotational Accel.
5x Rib Deflection
5x 2D Rib Deflection
5x Rib Linear Acceleration
5x Rib Linear Acceleration
Ax, Ay, Az
Ax, Ay, Az
Ax, Ay, Az
Ax
Dy (alternative)
Dy, Dz (alternative)
Ay on part W5-4040 (alt.)
Ax Ay, Az
7268C-2000
7268C-2000
7268C-2000
7302BM4
IF-369
IF-370
7264C-2000
7268C-2000
Lumbar Spine: Load Cell Fx, Fy, Fz, Mx, My, Mz  W50-71120
Pelvis:
Sacro-iliac Load Cell
Linear Acceleration
Pubic Load Cell
Rotational Acceleration
Fx, Fy, Fz, Mx, My, Mz
Ax, Ay, Az
Fy
Ax
W50-71130
7268C-2000
W50-71105
7302BM4
Upper Leg:
Femoral Neck Load Cell
Femur Load Cell
Knee Load Cell inboard/outboard
Fx, Fy, Fz
Fx, Fy, Fz, Mx, My, Mz
Fy
W5-7102
W50-71070
W50-71020
Lower Leg:
Upper Tibia Load Cell
Lower Tibia Load Cell
Fx, Fy, Fz, Mx, My, Mz
Fx, Fy, Fz, Mx, My, Mz
W5-7108
W5-7108
Static:
Temperature Sensor Thorax
3x 2-axis Tilt Sensors
 
Dx, Dy
734-0800
6001805
 

Test Equipment

Assembly Weights

Part
Target Weight (kg)
(UMTRI)
Weight (kg)
(WorldSID 5F Rev. 1)
Head 3.70 3.66
Neck 0.60 0.54
Thorax including half arms & 2D IR-TRACC 15.23 15.81
Abdomen 1.61 1.33
Pelvis 6.98 6.98
Upper Legs 11.83 11.83
Lower Legs, Feet & Shoes 6.00 6.61
Total 45.94 46.75
Suit 1.52 1.52
Pair of Shoes 0.64 -
Total 48.10 48.27