TY - RPRT TI - An Improved Plastically Dilatant Unified Viscoplastic Constitutive Formulation for Multiscale Analysis of Polymer Matrix Composites Under High Strain Rate Loading AU - Christopher Sorini AU - Aditi Chattopadhyay AU - Robert K Goldberg PY - 2020 UR - https://ntrs.nasa.gov/citations/20200000653 ID - 20200000653 ER -