To investigate the wind uplift resistance and failure modes of rigidly supported clamp-fixed photovoltaic （PV） modules, considering the effect of module fixation spacing and frame height, this study conducted wind uplift resistance tests on PV modules with different parameter combinations. The entire loading process of the PV modules under simulated wind load was measured, including displacement and strain changes. The damage deformation characteristics and failure modes of the PV module were analyzed. A numerical analysis model of the PV module was established using the structural finite element analysis software ABAQUS to further study the factors affecting the wind uplift resistance of the PV modules. The results show that the wind uplift failure mode of the PV module is the failure of the engagement between the fixed block and the module frame, leading to the entire PV module being uplifted. The wind uplift failure criterion for the PV module is defined as failure occurring when the slippage between the clamps and the PV module exceeds 2/3 of the original constraint surface section length of the block on the module frame. Reducing the length and width of the PV module, and increasing the height and fixation spacing of the PV module, can effectively improve its wind uplift resistance, with reducing the module width having the most significant effect.

PV modules  /  uplift wind resistance  /  numerical simulation  /  wind resistance uplift test  /  failure mode  /  module clamp