A method for determining energy distribution of a composite heat source and a welding simulation method

An energy distribution and welding simulation technology, applied in the field of welding processing, can solve the problems of long verification cycle of composite heat source and long time of overall welding simulation simulation, so as to shorten the verification period and time-consuming effect.

Active Publication Date: 2019-06-14
HANS LASER TECH IND GRP CO LTD +1
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Problems solved by technology

At present, the welding simulation technology is not very mature, and there are problems such as the long ca

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  • A method for determining energy distribution of a composite heat source and a welding simulation method
  • A method for determining energy distribution of a composite heat source and a welding simulation method
  • A method for determining energy distribution of a composite heat source and a welding simulation method

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Embodiment Construction

[0026] Now in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.

[0027] In this embodiment, Sysweld is selected as the welding simulation software. Sysweld is a computer simulation development system software that fully realizes the coupled calculation of mechanics, heat conduction and metallurgy. The numerical model involved in the welding simulation software is a finite element model. The heat source is expressed as a function in the finite element calculation. The heat source model is a mathematical expression of the distribution characteristics of heat input acting on the welding workpiece at a certain time and position.

[0028] Such as figure 1 As shown, the method for determining the energy distribution of the composite heat source in this embodiment includes the following steps:

[0029] Step A, select a section at the welding position, and obtain the molten pool figure on the section;

[0...

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Abstract

The invention relates to the field of welding machining, in particular to a method for determining energy distribution of a composite heat source and a welding simulation method. The method for determining the energy distribution of the composite heat source comprises the steps that selecting a section at a welding position, and obtaining a molten pool graph on the section; dividing the molten pool graph into different sub graphs according to various geometrical shapes; calculating an energy distribution coefficient of the sub-graph; and calculating an energy input value of each sub-graph. Theenergy input value is close to the actual energy input quantity; when heat source checking is carried out, using the energy input value as an initial value to be imported into a heat source model. Compared with a molten pool graph obtained through numerical calculation and a molten pool graph of an actual workpiece, basic matching can be achieved only through fine adjustment of relevant heat source parameters such as an energy input value, complex repeated adjustment is not needed, the checking period of the composite heat source is greatly shortened, and then the time consumption of the whole welding simulation is shortened.

Description

technical field [0001] The invention relates to the field of welding processing, in particular to a method for determining energy distribution of a composite heat source and a welding simulation method. Background technique [0002] With the development of computational simulation technology, welding simulation technology is also developing rapidly. More and more engineers use simulation technology to study welding process and phenomena, and optimize welding seam structure and welding process to achieve effective control of welding deformation and post-weld welding. problems such as cracking. At present, the welding simulation technology is not very mature, and there are problems such as the long calibration period of the composite heat source and the long time of the overall welding simulation. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for determining the energy distribution of the composite heat...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 蒋磊范国成万虹陈根余陈焱高云峰
Owner HANS LASER TECH IND GRP CO LTD
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