Numerical 3D simulation of wire deposition process to predict distortion of parts

Oleg Yu Smetannikov, Petr V. Maksimov, Dmitriy N. Trushnikov, Gleb L. Permyakov, Vladimir Ya Belenkiy, Alexander S. Farberov
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引用次数: 1

Abstract

In the work, on the basis of the analysis of publications, existing approaches to the numerical modeling of additive processes of product formation are shown. The work itself is devoted to the study of the influence of parameters of the process of surfacing wire materials on the formation of residual deformations in parts. A mathematical formulation of the non-stationary thermomechanical problem is presented, and algorithms for solving the problem using the technology of birth and death of finite elements in the ANSYS package are described. Verification of the model created by the finite element was carried out on the basis of data from the experiment on surfacing a multilayer sample. The effect on the level of residual warping of the following process parameters was studied: the exposure time before the next layer was deposited; the motion path of the burner; ambient temperature. It is shown that the change in ambient temperature is the most effective way to reduce the residual distortions of the form.

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金属丝沉积过程的三维数值模拟,预测零件的变形
在工作中,在分析出版物的基础上,现有的方法来数值模拟产品形成的附加过程。工作本身致力于研究堆焊线材工艺参数对零件残余变形形成的影响。提出了非平稳热力学问题的数学表达式,并描述了利用ANSYS软件包中的有限元生死技术求解该问题的算法。基于多层试样堆焊实验数据,对所建立的有限元模型进行了验证。研究了以下工艺参数对残余翘曲程度的影响:下一层沉积前的曝光时间;燃烧器的运动路径;环境温度。结果表明,环境温度的变化是减小形状残余畸变的最有效方法。
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