【摘要】 推导了激光辐照下转动壳体平均温度沿壳体母线方向分布的解析公式。由于对高斯功率密度分布光束无法得到工程上实用的结果,对公式进行了解析拟合,仅由一个具有实际物理意义的拟合系数———分布因子确定了解析拟合公式的形式,明确了温度估算公式中各项的物理意义。解析拟合公式计算结果与数值模拟结果较为一致。作为温升估算方法的一个应用实例,推导了转动充压柱壳在激光辐照下破坏时间的解析公式,与数值计算结果吻合得较好。更多还原

【Abstract】 An analytic formula for the mean temperature along the axial direction of a rotating cylinder shell irradiated by high energy laser beams is presented.For the laser beam with Gaussian distribution of power density,it’s very difficult to give an analytic expression,hence a fitting formula is derived.The formula is determined by only one fitting coefficient with physical meaning,which is called distribution factor.The results obtained by using the analytic fitting formula and numerical calculation agree well with each other.As an application example,a formula for rupturing time of inner-pressured rotating cylinder irradiated by laser beams is presented,and the results agree well with that of numerical calculation.更多还原