Reliability robust design method for multiple failure modes of ultra-deep well hoisting container
US10824781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2017 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Dec 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A reliability robust design method for multiple failure modes of an ultra-deep well hoisting container, including: defining randomness of a structural parameter, a material property, and a dynamic load of a hoisting container, and solving a random response of a structural failure for a random parameter using a design of experiment method; establishing reliability performance functions of each failure modes in accordance with failure criterion of the hoisting container; establishing a joint probability model of correlated failures using a copula theory in consideration of probability correlation between the failure modes; establishing, a system reliability model with failure correlation of the hoister container; establishing a sensitivity model concerning each random parameter for system reliability of the hoisting container; and establishing, in conjunction with an optimization design model, a reliability robust optimization design model for the hoisting container using a joint failure probability and parameter sensitivity as constraints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.