利用不同振动加工对FFF薄板动力学特性的影响

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摘要熔丝成型（Fused filament fabrication, FFF）是当今使用最为广泛的增材制造技术之一，能够直接生产出几乎任意复杂形状的零部件。利用振动进行FFF加工，并研究了不同振动（不同频率或幅值）对FFF薄板动力学特性的影响规律。首先，将普通FFF设备改装成振动式FFF设备；然后制备了利用不同振动加工的薄板样件，并完成锤击法模态实验，确定了样件的固有特性和振动响应；最后，对比分析实验结果，阐明了利用不同振动加工对FFF薄板动力学特性的影响规律。实验结果表明，利用的振动的频率或幅值增大时，样件的固有频率和振动响应会随之降低，而模态振型保持不变。

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	姜世杰1
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	孙明宇1
	战阳3
	李常有1

关键词 ：熔丝成型, 利用振动, 模态实验, 固有特性, 振动响应

Abstract：Fused filament fabrication (FFF) has been one of the most widely used additive manufacturing technologies, it can directly manufacture parts with almost any complex geometry. In this paper, different vibration (with different frequency or amplitude) was used in FFF process, and their influencing rule on the dynamic characteristics of FFF thin plates was studied. Firstly, an ordinary FFF equipment was refitted into a vibrating one; The samples processed with different vibrations were then prepared, and hammering modal tests were performed to confirm their inherent characteristic and vibration response; Finally, the influencing rule of different utilized vibrations on the dynamic characteristic of FFF plates was clarified through the comparison between the experimental results. It is shown that when the frequency or amplitude of the vibration increases, the natural frequency and vibration response of the samples will decrease, while the mode shape will remain unchanged.

Key words： Fused filament fabrication use vibration modal tests inherent characteristic vibration response

收稿日期: 2021-09-29 出版日期: 2022-12-28

引用本文:

姜世杰1,2，孙明宇1，战阳3，李常有1. 利用不同振动加工对FFF薄板动力学特性的影响[J]. 振动与冲击, 2022, 41(24): 287-292.
JIANG Shijie1,2, SUN Mingyu1, ZHAN Yang3, LI Changyou1. The influence of using different vibration machining on the dynamic characteristics of FFF plates. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(24): 287-292.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I24/287

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