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Analysis of the thermo-mechanical characteristics of the LENS(TM) process for steels using the finite element method.

机译:使用有限元方法分析LENS(TM)工艺的热机械特性。

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摘要

Laser Engineered Net Shaping (LENS(TM)) is a rapid-manufacturing procedure that involves complex thermal, mechanical, and metallurgical interactions. The finite element method (FEM) may be used to accurately model this process, allowing for optimized selection of input parameters, and, hence, the fabrication of components with improved thermo-mechanical properties. In this study the commercial FEM code SYSWELDRTM is used to predict the thermal histories and residual stresses generated in LENS(TM)-produced thin plates of AISI 410 stainless steel built by varying the process parameters laser power and stage translation speed. The computational results are compared with experimental measurements for validation, and a parametric study is performed to determine how the thermo-mechanical properties vary with these parameters. Thermal calculations are also performed with the code ABAQUSRTM to evaluate its potential use as a modeling tool for the LENS(TM) process.
机译:激光工程网成形(LENS™)是一种快速制造过程,涉及复杂的热,机械和冶金相互作用。可以使用有限元方法(FEM)对该过程进行精确建模,从而优化选择输入参数,从而制造出具有改进的热机械性能的组件。在这项研究中,商业FEM代码SYSWELDRTM用于预测通过改变工艺参数激光功率和平台平移速度而制成的AISI 410不锈钢薄板生产的热历史和残余应力。将计算结果与实验测量值进行比较以进行验证,并进行参数研究以确定热机械性能如何随这些参数变化。还使用代码ABAQUSRTM进行热计算,以评估其作为LENS™工艺建模工具的潜在用途。

著录项

  • 作者

    Pratt, Phillip Roger.;

  • 作者单位

    Mississippi State University.;

  • 授予单位 Mississippi State University.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2009
  • 页码 120 p.
  • 总页数 120
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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