Multilayer multi-pass welding simulation method, device and equipment and storage medium

Abstract

The invention provides a multilayer multi-pass welding simulation method, device and equipment and a storage medium, and relates to the technical field of welding numerical simulation. The method comprises: obtaining a finite element model of a to-be-welded workpiece; obtaining self-defined groove size parameters to generate a groove geometric model on the finite element model; obtaining a weldingpath for parameterization setting based on the groove geometric model and welding process parameters matched with the welding path; activating a finite element grid in the groove geometric model based on the welding path, the welding process parameters and a preset unit activation mode; obtaining a heat exchange boundary condition adaptively generated based on the boundary condition option and the unit activation process; and based on the heat exchange boundary conditions, performing sequential coupling calculation of the temperature field and the mechanical field to acquire temperature fieldand stress field distribution. According to the method, groove self-definition, unit activation mode self-definition and heat exchange boundary condition self-adaptive generation are provided, and various complex conditions and diversified requirements can be met.

Description

technical field [0001] The present invention relates to the technical field of welding numerical simulation, in particular to a multi-layer multi-pass welding simulation method, device, equipment and storage medium. Background technique [0002] Thick plate structural parts play a very important role in the production of welding industry, and are widely used in heavy industry sectors such as national defense, construction, water conservancy, transportation, shipbuilding, and large pressure pipelines. In the thick plate welding process, considering the limitations of welding penetration and welding width size parameters, multi-layer and multi-pass welding methods are generally used for welding. [0003] The process parameters and conditions of multi-layer multi-run welding are usually very complicated, and the number of weld passes can be as many as hundreds, which brings great difficulties and a lot of workload to process simulation modeling. At present, there are several k...

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Problems solved by technology

[0004] In view of this, the purpose of the embodiments of the present invention is to provide a multi-layer multi-run welding simulation method, device, equipment and storage medium to improve the tedious and complicated problems of multi-layer multi-run welding simulation in the prior art

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