Transactions of Materials and Heat Treatment

Title：Influence of wire-arc additive on device structure deformation follow-up hammering finishing-stress relief process

Authors： Jiang Lihe1 2 3 Liu Renpei1 Jiang Qian2 3

Unit： 1. College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics 2. Jiangsu Engineering Research Center for Advanced Manufacturing of Ship Power System Components 3. COSCO SHIPPING Marine Equipment & Spares（Nanjing）Co. Ltd.

KeyWords： wire-arc additive manufacture follow-up hammering hammering pressure beam structure transient dynamics

ClassificationCode：TG439.2

year,vol(issue):pagenumber：2022,47(12):109-114

Abstract：

The wire-arc additive follow-up hammering finishing-stress relief process has a crucial influence on the overall structural deformation of additive device. Therefore, in order to ensure the use accuracy of additive device, the influences of different hammering air pressures and hammering positions on the deformation of device structure were analyzed. Then, the relationship between hammering air pressure and hammering velocity was calculated analytically, and the finite element analysis model for the bearing capacity of frame-beam structure for large wire-arc additive device was established to analyze and determine the hammering reaction force on the beam during the hammering process. Furthermore, based on the different working positions and hammering air pressures, fifteen working conditions were designed, and the transient dynamic analysis was carried out for each working condition. The analysis results show that under each hammering air pressure, the impact of hammering on the deformation of beam along the gravity direction is the greatest, and the largest deformation region appears in the center of beam. Thus, the research provides a basis for the subsequent optimization of device and has certain engineering application value.

Funds：

江苏省工程技术研究中心项目（BM2021214）

蒋立鹤（1991-），男，硕士研究生，工程师 E-mail：516032103@qq.com 通信作者：刘仁培（1962-），男，硕士，教授 E-mail：lrp_msc@nuaa.edu.cn

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