Welding joint stress deformation simulation method, device and equipment and storage medium

Abstract

The embodiment of the invention provides a welded joint stress deformation simulation method, device and equipment and a storage medium. The method comprises the steps of acquiring a finite element model of a welded joint; based on the finite element model, solving a temperature field according to preset welding process parameters, heat exchange boundary conditions and control parameters to obtaintemperature field distribution; acquiring a mechanical curve of a material under different constraint boundary conditions, matching the mechanical curve based on the finite element model and the temperature field distribution, and acquiring a constitutive model corresponding to the matched mechanical curve; and solving a mechanical field based on the constitutive model to obtain stress deformation distribution of the welded joint. By establishing the mechanical curve interface matched with engineering practice, material parameters of the constitutive model can be rapidly and accurately defined, and diversity and flexibility of constitutive model adaptation in the simulation process are improved.

Description

technical field [0001] The invention relates to the technical field of welding numerical simulation, in particular to a stress deformation simulation method, device, equipment and storage medium of a welded joint. Background technique [0002] Welding residual stress, welding residual plastic strain and welding residual deformation will have harmful effects on the service and service life of welded structures. It is well known that tensile welding residual stress can accelerate crack initiation and growth, welding residual plastic strain is a representative measure of microscopic defects inside the structure, and welding residual deformation affects the subsequent processing and assembly of the structure, which in turn affects the service performance and service life of the structure. These aspects all show that it is of great significance to obtain high-precision and high-reliability stress-deformation results in welded joints. [0003] With the rapid development of weldin...

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Problems solved by technology

[0005] In view of this, the purpose of the embodiments of the present invention is to provide a stress deformation simulation method, device, equipment and storage medium for welded joints, so as to improve the problems of poor matching diversity, flexibility and convenience of constitutive models in the prior art

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