TY - RPRT TI - Solving modal equations of motion with initial conditions using MSC/NASTRAN DMAP. Part 1: Implementing exact mode superposition AU - Abdallah, Ayman A. AU - Barnett, Alan R. AU - Ibrahim, Omar M. AU - Manella, Richard T. PY - 1993 UR - https://ntrs.nasa.gov/citations/19930014550 ID - 19930014550 ER -