High-precision weld shape prediction method suitable for myriawatt laser welding
A technology of laser welding and prediction method, which is applied in the direction of instruments, complex mathematical operations, design optimization/simulation, etc., can solve the problem of low prediction accuracy of weld shape, and achieve high pressure calculation accuracy, good physical conservation, and stable calculation good sex effect
Pending Publication Date: 2022-08-02
CHANGSHU INSTITUTE OF TECHNOLOGY
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Abstract
The invention discloses a high-precision weld joint morphology prediction method suitable for myriawatt-level laser welding, and aims to solve the problem that the weld joint morphology prediction precision of myriawatt-level laser welding is low due to the fact that a weld pool and plume coupling behavior cannot be considered in an existing weld joint morphology prediction method. According to the method, a compressible two-phase flow numerical calculation method based on pressure is adopted to solve the coupling behavior of the molten pool and plume, and therefore high-precision prediction of the myriawatt-level laser welding seam morphology is achieved. Firstly, a welding seam morphology function and welding parameters at the initial moment are input; secondly, a compressible two-phase flow numerical calculation method based on pressure is adopted to obtain a welding seam morphology function at the next moment; and drawing a welding seam morphology function at the next moment, and extracting welding seam morphology and welding seam morphology characteristics. Compared with an existing weld joint morphology prediction method, the weld pool and plume coupling behavior in myriawatt-level laser welding can be accurately calculated, the algorithm is simple and easy to implement, the calculation efficiency is high, the physical conservation is good, and high-precision prediction of the myriawatt-level laser welding weld joint morphology can be achieved.
Application Domain
Design optimisation/simulationManufacturing computing systems +1
Technology Topic
PhysicsWeld seam +6
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