Simulation Arc welding using the Goldak’s double-ellipsoid heat source model Abaqus

In this example , we intend simulate arc welding process using the Goldak’s double-ellipsoid heat source model in Abaqus software

We use volumetric heat flux for simulation of the welding process, and we use Goldak’s double-ellipsoid model for define volumetric heat flux

The material of the plate is SUS304

Density, thermal conductivity, specific heat, thermal expansion, elastic properties and plastic properties depend on the temperature

In this example , welding voltage is 20 volt , welding current is 110 ampere , efficiency is 0.8 , welding speed is 10mm/s

Goldak’s double-ellipsoid heat source model is adopted to calculate volumetric heat flux distributions as heat input around the welding pool

Equations of the Goldak’s heat source model is defined as a function of position and time together with a number of parameters

The constants a,b,Cf,Cr as shown in picture are heat source parameters that define the size and shape of the ellipses and these parameters are obtained from experimental analysis

at Time=3.4 S

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Is 53 minutes

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