5.3.8. Workflow with MAT_TAUGHENED_ADHESIVE_POLYMER Material Model

If the SOLID-SOLID mapping is concerned with degree of cure (DoC) data, it can be augmented by a specific workflow with an explicit focus on the *MAT_TAUGHENED_ADHESIVE_POLYMER material model (also known as *MAT252 or *MAT TAPO). For brevity, the name *MAT252 is used.

For a better understanding of this workflow, some materials in the LS-DYNA application support a history variable for the DoC, which expresses the solidification state of the material during the hardening or curing processes. Depending on the DoC-value (in the range from 0 to 1), the original material properties are altered during the simulation in the LS-DYNA application. One option supporting this workflow is the *MAT307 card, which directly accepts DoC parameters on the history variables in the *INITIAL_STRESS_SOLID cards. On the contrary, it requires several parameters to setup the model. Another option is the *MAT252 card, which represents a more lightweight material model. However, it does not directly support DoC-values on the integration points. Via the two workflows characterized in Output: Initial Stress Cards and Output: New *PART and *MAT252 Cards, even the *MAT252 model can be adjusted based on the DoC parameter.

The main idea is discussed in the next section, while the corresponding commands are presented later in Commands. For a similar workflow, see Theseus to Solid.