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[CN 201710173549.4] Reliability design method for dynamic characteristics of high-speed press base considering probability and interval uncertainty
[CN 201710173549.4] Reliability Design Method for Dynamic Characteristics of High-speed Press Base Considering Probability and Interval Uncertainty Title: Reliability Design Method for Dynamic Characteristics of High-speed Press Base Considering Probability and Interval Uncertainty Application Number: CN 201710173549.4 Applicant: Zhejiang University Application Date: 2017-3-22 Patent Type: Invention Application The present invention discloses a reliability design method for dynamic characteristics of high-speed press base considering probability and interval uncertainty. It includes the following steps: selecting the minimum value of reliability under the influence of interval variables as the reliability index, establishing the probability-interval hybrid reliability design model of the dynamic characteristics of the high-speed press base, using Latin hypercube sampling and co-simulation technology to obtain sufficient sample points, and constructing a polynomial response surface model of the functional function corresponding to the dynamic characteristics of the high-speed press base; combined with the genetic algorithm and the calculation point method, the probability-interval hybrid reliability design model is optimized in two layers, and when the minimum value of reliability under the influence of interval variables meets the reliability requirement and the functional function meets the accuracy requirement, the optimal solution of the probability-interval hybrid reliability design model is output. The method of the invention can not only meet the reliability design requirements of the base, but also maintain a high computational efficiency and obtain accurate and reliable calculation results.
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