Several sets of pedestrian impactor models for the finite element code LS-DYNA are available. The models are distributed by DYNAmore in Germany, Italy, Austria, Poland, Spain, Switzerland, and neighboring countries.
Following you may find a short comparison of the head and leg form models developed by DPLP (a consortium of Daimler, Porsche, Lasso, and Peng), ARUP, LSTC, and FTSS. The human model THUMS developed by TOYOTA which is also used in pedestrian saftey is described at the following Link.
European and Japanese Headform Models
The head forms consists of a rigid sphere coated with a rubber hull. A triaxial accelerometer is fitted in the center of gravity.
Euro NCAP / J-NCAP Adult Headform Model (Weight: 4.5 kg; Diameter: 165 mm)
|
DPLP:
| Item | # Number |
| Nodes |
19895 |
| Shells |
3944 |
| Solids |
16540 |
|
 |
Oasys:
| Item | # Number |
| Nodes |
28696 |
| Shells |
3712 |
| Solids |
22240 |
|
 |
Euro NCAP / J-NCAP Child Headform Model (Weight: 3.5 kg; Diameter: 165 mm)
|
DPLP:
| Item | # Number |
| Nodes |
15347 |
| Shells |
3618 |
| Solids |
11778 |
|
 |
Oasys:
| Item | # Number |
| Nodes |
26450 |
| Shells |
3712 |
| Solids |
19808 |
|
 |
Leg Form Model
The models of femur and tibia tubes are covered by Confor foam and enclosed by a neopren layer. A deformable knee element connects the two tubes.The lower tube has an accelerometer fitted on the non-struck side.
DPLP:
| Item | # Number |
| Nodes |
60192 |
| Shells |
24440 |
| Solids |
42048 |
|
 |
Oasys:
| Item | # Number |
| Nodes |
21290 |
| Shells |
10720 |
| Solids |
14198 |
|
 |
Upper Leg Form Model
The front of the impactor is covered by Confor foam and a neopren layer. Three strain gauges are used to measure bending moments. Two load cells at either end of the model measure the impact forces.
DPLP:
| Item | # Number |
| Nodes |
40195 |
| Shells |
40316 |
| Solids |
25772 |
|
 |
Oasys:
| Item | # Number |
| Nodes |
10968 |
| Shells |
6356 |
| Solids |
5898 |
|
 |
Flexible Pedestrian Legform Model (Flex-PLI GTR)
The development of the new legform impactor was initialted by the Japan Automobile Manufacturers Association (JAMA) and the Japan Automobile Research Institute (JARI). Later a UNECE Working group finalized the design. FTSS is manufacturing the impactor and is also offering a finite element model of the device. The impactor represents a 50th percentile male leg under a lateral bending load, typically observed in an acident of a vehicle with a pedestrain. The tibia and femur are designed as a segmented assembly mainly made from a high strengh plastic with a fiber reinforced bone on the inside.
| Item | # Number |
| Nodes |
115194 |
| Shells |
80558 |
| Solids |
105644 |
|
 |
