Abstract: High power laser irradiation damage was mainly caused by three aspects as thermal, mechanical and radiation damages of the material, and direct characterization parameters for laser ablation was the thermal and mechanical effects of the material caused by laser irradiation. According to performance indicators and damage models of an airborne laser (ABL) weapon system, design framework and algorithmic process for ABL simulation system were build and the appropriate mathematical and physical models were established. Discrete method was used for solving the heat conduction equation, and the key parameters to characterize the ability of laser damage were obtained. Probability of damage occurrence for materials was simulated under different operating conditions, and the factors to affect damage probability were also analyzed.

Key words: high-power laser, ablation, thermal and mechanical effects, computer simulation, heat transfer, thermal conductivity, solid mechanics

摘要： 高功率激光辐照材料所造成的毁伤主要包括热破坏、力学破坏以及辐射破坏3个方面，直接表征烧蚀特性的参数是激光对材料造成的热力效应。根据机载激光武器系统ABL的性能指标与毁伤模式，构建ABL仿真系统设计框架与算法流程，建立相应的数学物理模型，采用离散化方法求解热传导方程，得到表征激光毁伤能力的关键参数。模拟了不同工况下材料的毁伤发生概率，并分析影响毁伤概率的因素。

关键词: 高功率激光, 烧蚀, 热力效应, 计算机模拟, 传热, 热传导, 固体力学