摘要： Pulsed laser ablation (PLA) is widely applied in mechanical processing with its energy distribution determining the quantity of removed material. Thus, the accurate description of energy distribution accumulated on component surface is crucial for further study of ablation morphology, such as the maximum ablation depth in laser patterning. However, there exist the overlapping area between adjacent laser spots and the non-continuity of laser energy here, which increase the inaccuracy of energy distribution description proverbially. By comprehensively considering the discrete distribution for laser spots and the non-uniform features for energy distribution, the innovative approach is proposed to establish a feasible dynamic energy distribution model in PLA quantitatively, with an idea of continuous approximation to resolve its discrete characteristic. More significantly, based on the proposed model, a new method is also presented to tackle PLA morphology prediction, just the maximum laser ablation depth in laser patterning. Finally, FEA simulations and experiments are performed to investigate the proposed model and method which endorse the robust and efficient theoretical model for reliable yet fast calculation of the maximum ablation depth.