Abdominal Forces

Models of abdominal force transducers and replacements

The abdominal forces are determined by three load cells. The figure above 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. This is the old way to evaluate the abdomen forces. It is still in the model included to compare the results to older ES-2 Versions.

Remark: Renumbering or adding further contact definitions in the run may change the numbering and thus has to be considered in post-processing.

As a new feature, since 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. This method is recommended to evaluate abdomen forces.