A simulation modeling methodology considering random multiple shots for shot peening process

IF 3.6 4区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Hanjun Gao, Minghui Lin, Jing Guo, Liang Yang, Qiong Wu, Ziliang Ran, Nianpu Xue
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引用次数: 0

Abstract

Shot peening (SP) process is a typical surface strengthening process for metal and metal matrix composites, which can significantly improve the fatigue life and strength. The traditional SP simulation model falls short as it only takes into account one or a few shots, proving insufficient for accurately simulating the entire impact process involving hundreds of shots. In this study, a random multiple shots simulation modeling methodology with hundreds of random shots is proposed to simulate the impact process of SP. In order to reduce the simulation error, the random function Rand of MATLAB is used to generate the shot distributions many times, and the shot distribution closest to the average number is selected and the three-dimension parametric explicit dynamics numerical simulation model is built using ABAQUS software. Orthogonal experiments are carried out to investigate the influences of shot diameter, incident impact velocity, and angle on the residual stress distribution, roughness, and specimen deformation. Results showed that the average relative errors of maximum residual compressive stress, roughness, and deformation of specimen between simulation model and experimental value are 30.99, 16.14, and 16.73%, respectively. The primary factors affecting residual stress and deformation is shot diameter, and the main factor affecting roughness is impact velocity.
考虑随机多次喷丸强化过程的仿真建模方法
喷丸强化工艺是一种典型的金属及金属基复合材料表面强化工艺,能显著提高材料的疲劳寿命和强度。传统的SP仿真模型只考虑了一次或几次射击,不足以准确模拟涉及数百次射击的整个冲击过程。本研究提出了一种包含数百个随机弹丸的随机多弹丸仿真建模方法来模拟SP的冲击过程。为了减小仿真误差,利用MATLAB中的随机函数Rand多次生成弹丸分布,选取最接近平均值的弹丸分布,并利用ABAQUS软件建立三维参数化显式动力学数值仿真模型。通过正交试验研究了射丸直径、入射速度和射角对残余应力分布、粗糙度和试样变形的影响。结果表明:模拟模型与试验值的最大残余压应力、粗糙度和变形平均相对误差分别为30.99、16.14和16.73%。影响残余应力和变形的主要因素是弹丸直径,影响粗糙度的主要因素是冲击速度。
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来源期刊
Reviews on Advanced Materials Science
Reviews on Advanced Materials Science 工程技术-材料科学:综合
CiteScore
5.10
自引率
11.10%
发文量
43
审稿时长
3.5 months
期刊介绍: Reviews on Advanced Materials Science is a fully peer-reviewed, open access, electronic journal that publishes significant, original and relevant works in the area of theoretical and experimental studies of advanced materials. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication. Reviews on Advanced Materials Science is listed inter alia by Clarivate Analytics (formerly Thomson Reuters) - Current Contents/Physical, Chemical, and Earth Sciences (CC/PC&ES), JCR and SCIE. Our standard policy requires each paper to be reviewed by at least two Referees and the peer-review process is single-blind.
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