公开(公告)号：US20240279765A1

公开(公告)日：2024-08-22

申请号：US18112891

申请日：2023-02-22

Applicant: Shanghai Maritime University

Inventor： Bangping Gu ,  Jingshu Zhuo ,  Zidi Jin ,  Liqiang Gao ,  Yongli Hu ,  Xiong Hu ,  Zilin Zhang ,  Chuanxiao Yang ,  Junshuo Wang

IPC: C21D10/00 ,  G05D19/02

CPC classification number: C21D10/00 ,  G05D19/02

Abstract: The present invention discloses an electro-vibration coupled stress relief system, comprising a host computer, an arbitrary waveform card, a power amplifier, an electromagnetic exciter, an energy amplification device, an acceleration sensor, a charge amplifier, an oscilloscope, a power module, a charging module, an electric energy storage module, a discharge module, a pulse current sampling measurement module and a copper electrode. The present invention also discloses a method for eliminating residual stress, comprising the following steps: obtaining the natural frequencies of bending vibration of different orders by numerical modal analysis; fixing the metal structure; discharging the metal structure to generate high-energy electrical pulses by opening the charging switch and closing the discharge switch; inputting the analog excitation signal output by the arbitrary waveform card into the electromagnetic exciter via the power amplifier and driving the electromagnetic exciter to generate high-frequency vibration.