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A method for analyzing the effect of ultrasonic impact treatment on residual stress of metal components formed by laser selective melting

A technology of laser selective melting and ultrasonic impact, which is applied in the field of additive manufacturing, can solve problems such as initial stress and deformation, and achieve the effect of optimizing impact process parameters

Active Publication Date: 2022-08-02
HARBIN ENG UNIV
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Problems solved by technology

The current simulation analysis generally does not consider the influence of initial stress and deformation

Method used

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  • A method for analyzing the effect of ultrasonic impact treatment on residual stress of metal components formed by laser selective melting
  • A method for analyzing the effect of ultrasonic impact treatment on residual stress of metal components formed by laser selective melting
  • A method for analyzing the effect of ultrasonic impact treatment on residual stress of metal components formed by laser selective melting

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Embodiment Construction

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] figure 1 is the finite element mesh division diagram of the impacted member; figure 2 Overall assembly drawing of punch, impact pin and impacted components after meshing; image 3 is the displacement load curve loaded on the punch; Figure 4 The displacement diagram in the transverse direction is cut along the longitudinal section of the center line for the component after laser selective melting and forming; Figure 5 It is the transverse stress distribution after the component is cut along the longitudinal section of the center line after laser selective melting and forming; Image 6 It is the transverse stress distribution after the member is cut along the longitudinal section of the center line after impact treatment; Figure 7 It is the lateral displacement distribution of the member after the impact treatment is cut along the longitudinal section of the...

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Abstract

The invention belongs to the field of additive manufacturing, and in particular relates to a method for analyzing the influence of ultrasonic impact treatment on residual stress of metal components formed by laser selective melting. First, the finite element software Simufact.Additive is used to simulate the laser selective melting and forming process of an aluminum alloy sheet, and Cool in Simufact.Forming to obtain the distribution of manufacturing residual stress and deformation, and then use Msc.Marc to input the stress and deformation mesh to simulate the ultrasonic impact process on the basis of the residual stress and deformation generated in the laser selective melting forming process. Calculated to analyze the physical process of the effect of the entire ultrasonic impact on the laser selective melting and forming of metal components. The invention uses the Msc.Marc dynamic transient module to simulate the ultrasonic impact, takes the laser selective melting and forming stress field as the initial condition, and the calculation results and the residual stress tester measurement results are in good agreement in terms of numerical value and change trend. In order to optimize the impact process parameters and explore the purpose of its action mechanism.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and particularly relates to a method for analyzing the influence of ultrasonic impact treatment on residual stress of a metal component formed by laser selective melting. Background technique [0002] Aluminum alloys have good mechanical properties and processing properties, and have the advantages of low density, good corrosion resistance and wear resistance, high strength and stiffness, and strong impact resistance. They are widely used in aerospace, automobile manufacturing, shipbuilding and marine engineering equipment. Applications. The laser selective melting forming processing method can produce components of any shape without being limited by the complexity of the part structure. In recent years, the laser selective melting forming technology of aluminum alloy parts has been more and more applied. [0003] Due to the characteristics of continuous rapid melting and solidification in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F111/10G06F119/14G06F113/10
CPCG06F30/23
Inventor 邢晓冬段晓明姜风春周长平王振李鹏苏艳蒋婷婷
Owner HARBIN ENG UNIV
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