Theoretical and experimental study on determining the reasonable cropping process parameters of precision cropping system

IF 6 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Meng Dang , Chuanwei Zhang , Zhengyang Yu , Zhi Yang
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引用次数: 0

Abstract

A new controllable rotary bending cracking cropping method, based on V-notch stress concentration, is proposed to address the drawbacks of the metal bar separation process, such as poor cross-section quality and low material utilization. The controlled rotary bending cracking cropping experimental device is developed to implement this method. Subsequently, a mechanical model for the precision cropping process is established using material strength theory, and a load control strategy based on fracture mechanics theory is applied to predict cropping efficiency. Experimental verification is then conducted, with results indicating that increasing notch depth improves cropping efficiency and cross-section quality. Additionally, maintaining constant stress intensity factor amplitude (ΔK = 0.4Kc) and notch depth of 5 mm yields optimal cropping effects. The precision cropping process leverages the fatigue crack propagation mechanism to explain the cropping process, offering theoretical guidance for selecting appropriate parameters in subsequent precision cropping processes.

确定精耕细作系统合理耕作过程参数的理论与试验研究
针对金属棒分离过程中存在的截面质量差、材料利用率低等缺点,提出了一种基于 V 型缺口应力集中的新型可控旋转弯曲开裂裁剪方法。为实现该方法,开发了可控旋转弯曲开裂裁剪实验装置。随后,利用材料强度理论建立了精密剪切过程的力学模型,并应用基于断裂力学理论的载荷控制策略来预测剪切效率。然后进行实验验证,结果表明,增加缺口深度可提高种植效率和横截面质量。此外,保持恒定的应力强度因子振幅(ΔK = 0.4Kc)和 5 毫米的切口深度可获得最佳种植效果。精确裁剪过程利用疲劳裂纹扩展机制解释了裁剪过程,为后续精确裁剪过程中选择适当参数提供了理论指导。
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来源期刊
Ain Shams Engineering Journal
Ain Shams Engineering Journal Engineering-General Engineering
CiteScore
10.80
自引率
13.30%
发文量
441
审稿时长
49 weeks
期刊介绍: in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.
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