Abdominal Forces
Fig. 18: Models of force transducers and replacements
The abdominal forces are determined by three load cells. Figure 18 shows the abdomen region. On the impact side, the abdomen carrier is equipped with force transducers. On the other side replacements are located.
Three *CONTACT_FORCE_TRANSDUCER definitions are used in the model to represent the load cells. The title option is applied to find the interface number in the RCFORC file. The 3rd contact definition is for the front force transducer. The 4th and 5th definitions are used to measure the middle and back forces. The sum of the three forces is the resultant abdominal force.
Remark: Renumbering or adding further contact definitions in the run may change the numbering and thus has to be considered in post-processing.
| Item | Interface ID |
Label |
Component |
|---|---|---|---|
| Abdominal force front Abdominal force middle Abdominal force back |
Interface 3 Interface 4 Interface 5 |
ABDOMINAL FORCE - FRONT ABDOMINAL FORCE - MIDDLE ABDOMINAL FORCE - BACK |
magnitude magnitude magnitude |
| Resultant abdominal force |
Interfaces 3+4+5 |
--- |
magnitude |
As a new feature of the ES-2 version 5.0 there are discrete beam elements for the evaluation of the abdominal forces. Thus, it is possible to model an uni-axial load cell.
| Item | Beam ID |
Label |
Component |
|---|---|---|---|
| Abdominal force front Abdominal force middle Abdominal force back |
10014 10015 10016 |
abdomen load cell front abdomen load cell middle abdomen load cell back |
shear-S shear-S shear-S |
