Investigation on the influence of dynamic characteristic on grinding residual stress

Sun, Cong; Hong, Yuan; Xiu, Shichao; Zhang, Peng

doi:10.1007/s00170-021-07217-w

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Where aw is the thermal diffusion coefficient, Gxh, Gxv, Gzh, Gzv, Gxzh, and Gxzv are the Green's functions of plane strain [41]. The formula's temperature gradient change rate ∂T/∂x is calculated from the finite difference temperature field.…”

Section: Fig 4 Grinding Load Distribution Diagrammentioning

confidence: 99%

Prediction method for residual stress evolution caused by rolling/sliding contact in ultrasonic vibration-assisted grinding

Ye,

Jun,

Tang

et al. 2024

Preprint

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Ultrasonic vibration-assisted grinding (UVAG) technology has advantages in improving part surface integrity. Currently, the calculation of residual stresses in UVAG typically relies on commercial finite element software. However, because commercial finite element software is not specialized for residual stress calculations, the computational efficiency could be higher, and the accuracy could be better. This paper proposes a semi-analytical residual stress prediction model that considers the Influence of ultrasonic vibration. This paper introduces a semi-analytical residual stress prediction model that considers the impact of ultrasonic vibration. The model calculates the grinding mechanical and thermal stress fields separately using contact mechanics and finite difference methods. Based on Hertz's contact theory and Timoshenko's thermoelastic theory, a correlation model is provided for the association between mechanical and thermal loads with the internal stresses in the workpiece. Subsequently, the residual stress field is solved by considering the thermal-mechanical coupling effects in UVAG. Ultrasonic-assisted grinding experiments were conducted using 12Cr2Ni4A alloy steel as the object, and the maximum error between the predicted residual stresses by the model and the measured residual stresses was 10.5%.In addition, the detailed discussion on the Influence of grinding parameters on residual stress reveals that reducing the grinding wheel speed can significantly increase surface compressive residual stress. The paper's research shows that the residual stress distribution obtained by the new residual stress calculation model is correct, and the calculation efficiency is high, providing a new method for predicting residual stress in UVAG.

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Section: Fig 4 Grinding Load Distribution Diagrammentioning

confidence: 99%

Prediction method for residual stress evolution caused by rolling/sliding contact in ultrasonic vibration-assisted grinding

Ye,

Jun,

Tang

et al. 2024

Preprint

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“…Fig. 9 Schematic diagram of the stress history of the grinding process [29] According to Fig. 7, the stress distribution at any point on the surface of the workpiece can be regarded as multiple loading.…”

Section: Loading and Unloading Of Stressmentioning

confidence: 99%

“…Ultrasonic vibration-assisted grinding is a dynamic abrasive particle removal process, and each effective abrasive particle can be regarded as a cutting edge, so the stress distribution of a single abrasive particle must be calculated first. Assuming that grinding is a plane strain change state, that is, the strain state in the 𝑦 direction is approximately zero, the stress tensor and strain tensor at any position 𝐴(𝑥, 𝑧) can be expressed as follows [29]:…”

Section: Stress Distribution Caused By Mechanical Loadmentioning

confidence: 99%

Mechanism and prediction of residual stress generation in ultrasonic vibration-assisted grinding of bearing steel

Zhang,

Luan,

Zhao

et al. 2024

Preprint

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The surface residual stress of the parts has an important influence on their performance. The generation mechanism of surface residual stress in ultrasonic vibration-assisted grinding (UVAG) of bearing steel was investigated, and the correlation between processing parameters and residual stresses was obtained. Based on the ultrasonic vibration-assisted grinding force and thermal model and the flow stress model considering the initial material microstructure, the mechanical and thermal stresses of the material were calculated. Finally, the theoretical model of residual stress is established based on the yield theory and experimentally verified. High-speed ultrasonic aerostatic spindle for ultrasonic vibration-assisted grinding, change the inlet pressure to realize the ultrasonic amplitude and frequency adjustment, the experimental results show that the cutting direction and the vertical cutting direction of the residual stress test results and the model prediction results of the average relative error of 11.4% and 11.7%, and the rule of change is more consistent. Based on the experimental results, the influence pattern of process parameters on the experimental results was analyzed. The results show that the residual compressive stress on the surface of ultrasonic vibration-assisted grinding is directly proportional to the grinding depth, feed rate, and inlet pressure of pneumatic ultrasonic wave, and inversely proportional to the linear speed of the grinding wheel. This study provides a theoretical basis for the analysis of UVAG residual stress and optimization of UVAG process parameters.

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“…Besides, the surface mechanical property characterisation plays a dominant role in deciding the surface fatigue strength. Especially, the residual stress and its distribution of the machined surface are two major factors to influence workpiece life span, reliability, and fatigue property [6]. The component for aerospace construction, precision structure, and dynamic system should be machined before its life span, which results in surface residual stress due to the mechanical effect, the thermal effect and the transformation effect.…”

Section: Introductionmentioning

confidence: 99%

Influence of prestress grinding hardening residual stress on rolling contact fatigue

Sun

Xiu

Xing

et al. 2022

Materials Science and Technology

Self Cite

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The rolling contact fatigue is commonly seen in industrial applications. Studies mainly focus on fatigue evolution caused by heat treatment. However, the combined machining includes thermal-mechanical coupling and transformation. The generated residual stress can be another factor to decide contact fatigue. A sequent study is conducted to investigate the influence of residual stress on contact fatigue after prestress grinding hardening. To figure out the rolling crack initiation and propagation on residual stress surface, a united calculation combined with finite element method and analytic method is proposed. Based on the above analysis, the rolling contact fatigue can be adjusted by controlling the initial residual stress of machining surface, which is meaningful for surface anti-fatigue manufacturing with longer life span requirements.

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Investigation on the influence of dynamic characteristic on grinding residual stress

Cited by 11 publications

References 28 publications

Prediction method for residual stress evolution caused by rolling/sliding contact in ultrasonic vibration-assisted grinding

Prediction method for residual stress evolution caused by rolling/sliding contact in ultrasonic vibration-assisted grinding

Mechanism and prediction of residual stress generation in ultrasonic vibration-assisted grinding of bearing steel

Influence of prestress grinding hardening residual stress on rolling contact fatigue

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