摘要
根据GB150—1998钢制压力容器中整体法兰中的应力校核原则,采用优化设计方法中拉格朗日乘子法,进行最小质量的优化计算。将法兰有效厚度δf作为随机变量,轴向应力、径向应力、环向应力和组合应力校核作为约束条件,法兰质量作为目标函数,在满足所要求的可靠度基础上优化法兰尺寸,从而减轻法兰质量,目的是尝试一种比常规设计更有效可行的优化设计方法,并以换热器外浮头盖法兰为优化设计实例,说明该方法切实可行。
According to the stress check criteria of the integral flange stipulated in GB150-1998 steel pressure vessels, optimum design of the integral flange is made by Lagrangian method. By taking the effective thickness of the flange as random variable, and the axial stress, radial stress, hoop stress and compound stress check as constraint condition, and the mass of the flange as the objective function, the dimensions of the flange are optimized, thereby the goal of reducing the mass of the flange under the condition of reliability being satisfied. Case analysis and calculation shows that the optimum design method is feasible.
出处
《石油机械》
北大核心
2005年第8期27-29,3,共3页
China Petroleum Machinery
