NA_ACMS is a module within the MSC Software suite known as **MSC Nastran**. MSC Nastran is a widely used software application for finite element analysis (FEA) and computational structural mechanics.
NA_ACMS stands for **Nonlinear Analytical Contact Method Solver**, which is used for simulating contact problems in nonlinear dynamics and static analyses. This module provides capabilities to analyze contact interactions between bodies, which is