本文主要由两个部分构成，即基于有限元程序自动生成系统(FEPG)的组合网格法和组合网格法在焊接数值模拟中的应用。

This paper consists of two parts: one researches mainly on the Composite Grid method based on FEPG, the other studies the application of CGM on numerical simulation of welding.

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讨论组合网格法(CGM)在有限元程序自动生成系统平台(FEPG)上的具体实现，并对激光焊接问题进行数值模拟，取得了理想的仿真结果。

Discussed the CGM based on finite element program generator (FEPG), the laser welding problems is simulated on it, and reached some ideal simulation results.

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然后在FEPG(有限元自动生成系统)平台上，编制相应的计算程序。

Then the numerical programs are developed on the platform FEPG (Finite Element program Generating System) software.

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然后在FEPG(有限元自动生成系统)平台上，编制相应的计算程序。

Then the numerical programs are developed on the platform FEPG (Finite Element program Generating System) software.

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