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针对集装罐用安全阀使用特点,采用实验设计(DOE:Design of Experiments)的方法,对安全阀弹簧工作状况进行快速建模,并引用多任务优化方式(Multi-objective optimization)优化弹簧设计,使其缠绕圈内侧最大剪切应力及其重量都最小化。研究过程中,一个具有3个可变参数的参数化有限元弹簧模型被用于生成在预先设定好的弹簧形状范围内的任意弹簧形状。通过V-Optimal方法生成拥有30个输入点的DOE输入矩阵。通过分析计算获得两个三阶多项式回归模型,此模型能够充分反映剪切应力及弹簧重量的回归特性。此项研究表明,通过DOE和多任务优化方式能够快速的对安全阀弹簧进行设计和优化。
Aiming at the characteristics of the safety valve used in container cans, this paper uses DOE (Design of Experiments) method to simulate the working condition of safety valve springs and uses the multi-objective optimization to optimize the spring design. Minimize the maximum shearing stress inside the winding and its weight. In the course of the study, a parametric finite element spring model with three variable parameters was used to generate any spring shape within a pre-defined spring shape. Generate a DOE input matrix with 30 input points using the V-Optimal method. Two third-order polynomial regression models are obtained through analysis and calculation. The model can fully reflect the regression characteristics of shear stress and spring weight. This study shows that the safety valve spring can be quickly designed and optimized through DOE and multitasking optimization.