Contents Chapter 3: Composite Modeling Techniques | Print page 3.9. Element Choice in ACPThis section describes the composite modeling techniques for the use of shell, solid, and solid-shell elements.3.9.1. Introduction3.9.2. Shell Elements3.9.3. Solid Elements3.9.4. Solid-shell Elements « 3.8. Guide to Composite Failure Criteria 3.9.1. Introduction »