Metal failure model construction method and device, terminal equipment and storage medium

Abstract

The invention provides a metal failure model construction method and device, terminal equipment and a storage medium. The method comprises: constructing a constitutive model according to a tensile test result of sample metal; determining an equivalent fracture plastic strain-stress triaxial curve according to the constitutive model and the stress state test result of the sample metal; performing stress state simulation on the sample metal to obtain a damage accumulation index, a stress weakening coefficient, an equivalent critical plastic strain-stress triaxial curve, a fracture strain correction factor-unit size curve and a fracture strain correction factor; and constructing a metal failure model according to the equivalent fracture plastic strain-stress three-axis curve, the damage accumulation index, the stress weakening coefficient, the equivalent critical plastic strain-stress three-axis curve, the fracture strain correction factor-unit size curve and the fracture strain correction factor. The metal failure model constructed by the method can perform failure analysis on metal under different stress states, different damage accumulations and different stress weakening.

Description

technical field [0001] The present application relates to the field of material technology, and in particular to a metal failure model construction method, device, terminal equipment and storage medium. Background technique [0002] Metal materials are widely used in industrial production. Metal failure refers to the damage of metal materials such as fracture and explosion due to internal or external reasons. It can occur in various fields of industrial production, including various chemical equipment, pressure vessels, machinery, etc. Processing equipment, smelting equipment and transportation equipment, etc. Once the failure of metal materials occurs, it will often lead to various production accidents, which will seriously cause huge personal injury and property loss. Therefore, in the process of metal preparation, the problem of metal failure analysis has attracted more and more attention. [0003] The existing metal failure analysis is based on the metal failure model, ...

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a metal failure model construction method, device, terminal equipment, and storage medium to solve the problem of using the maximum equivalent strain to determine whether the metal material fails in the prior art, and the factors considered are relatively single, resulting in less accurate failure analysis for metals

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