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DRM-MD approach for modeling laser-material interaction with axial symmetry

机译:DRM-MD方法用于建模具有轴向对称性的激光材料相互作用

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摘要

A dual reciprocity method multi-domain (DRM-MD) approach for modeling laser-material interaction with axial symmetry was developed. The proposed approach is based on the fundamental solution for the Laplace equation in 2D and is much simpler for implementation than the dual reciprocity boundary element method (DRBEM) based on the fundamental solution for axisymmetric problems incorporating elliptic integrals. The thermal model of laser-material interaction was applied for the cases of mono as well as multi-layer structures. Different aspects of interaction up to the melting point of considered materials are presented. The effect of temperature dependence of the absorption coefficients on the process of laser heating was considered. Numerical results for spatial as well as temporal temperature distribution inside the material bulk are presented and compared to analytical solutions.
机译:建立了双向互易法多域(DRM-MD)方法,用于建模具有轴向对称性的激光材料相互作用。所提出的方法基于二维Laplace方程的基本解,并且比基于结合椭圆积分的轴对称问题的基本解的对等互易边界元方法(DRBEM)的实现要简单得多。激光与材料相互作用的热模型适用于单层和多层结构的情况。介绍了相互作用的不同方面,直至所考虑材料的熔点。考虑了吸收系数的温度依赖性对激光加热过程的影响。给出了物料内部空间和时间温度分布的数值结果,并将其与解析解进行了比较。

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