Parametric Study of Phosphogypsum‐Rock Wool‐Phosphogypsum Sandwich Lightweight Partition Wallboards Under Impact Load
Min Huang, Jun Liu, Wenbin Pan, Xibin Yang, Qinglin Liu, Hao Wang, Jianshuo WangABSTRACT
To investigate the mechanical properties of Phosphogypsum‐RockWool‐Phosphogypsum (P‐RW‐P) sandwich lightweight partition wallboards under impact load, a finite element model was built using ANSYS/LS‐DYNA. After validating its accuracy, parametric analysis was conducted on five groups of 21 specimens. The effects of rock wool and phosphogypsum board thickness, impact object mass, velocity, and position on failure modes and dynamic responses were examined. Findings reveal that increasing the total board thickness enhances flexural stiffness, raises the maximum impact force and pseudo‐static load, and lessens deformation. Thickening the phosphogypsum board is more beneficial for impact resistance. The maximum impact force grows with the impact object's initial kinetic energy. A large—mass impact has a longer duration than a high—velocity one. The failure modes of the partition board are different under various impact parameters. Moving the impact toward the fixed end makes the board more vulnerable. This study provides a reference for modular partition design in building engineering.