对激光辐照复合材料层合板的应力应变进行模拟分析，获得了应力应变场分布及其变化规律。数值模拟首先获得试件各点随激光辐照时间变化的温度场，然后将温度场导入并分析了试件的热应力和热应变。结果显示：沿纤维方向应力由中心的最大拉应力过渡到距光斑边缘约5 mm处的最大压应力后逐渐减小；垂直纤维方向应力在光斑内及其附近均是压应力；Mises应力在光斑中心处最大并随各位置到中心距离的增大而减小。热冲击使各点应力在辐照初期产生波动，光强越大，波动的时间点越早。为了验证数值分析模型，在激光辐照的复合材料层合板正面光斑周围粘贴应变片，用动态应变仪测试多点的应变并与数值结果进行对比，数值模拟应变与实测应变吻合较好，最大相对误差为18.4%。

Through the simulation of laminated plate irradiated by laser, the distribution of stress and strain is found. Firstly, temperature field is gotten through numerical simulation, and then the thermal stress and strain are obtained by inputting the temperature field to the analysis model. The result shows that stress along the fiber decreases after the transition from the maximum tensile stress at the center point to the minimum compressive stress at the point about 5 mm away from the edge of the laser spot; stress perpendicular to the fiber is always compressive stress in the laser spot and the surrounding area; Mises stress reaches the maximum at the center point and decreases with the increase of the distance to the center point. Thermal strike causes the fluctuation, and the larger the laser intensity, the earlier the fluctuation happens. In order to verify the numerical model, the strain gauges are stuck around the laser spot on the front face of laminated plate under laser irradiation. The strains of the points are tested with dynamic strain instrument. The strain of simulation coincides with experiment nicely, the maximum relative error is 18.4% between the simulation and experiment results.