Design of FG/CS-LPP and material removal uniformity experiment on ZrO2 ceramic

Dong, Xia; Lu, Chao; Jin, Mingsheng; Zhu, Dongjie; Wang, Liming; Wang, Hao

doi:10.1016/j.compositesa.2020.106048

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…To realize the reasonable distribution of in-plane stress, Young's modulus E(x,y) is supposed to be radial-gradient distributed through rational design of FGMs to change the distribution of in-plane material properties of LPP. Besides, there is often a stress mutation between the boundary of different gradient rings, [11,12] and the HL has the property of smoothing the stress mutation without changing the trend of contact stress distribution. Furthermore, HL has a radially consistent effective action rate of abrasive particles.…”

Section: Principle Analysismentioning

confidence: 99%

“…Aiming to obtain uniform material removal through making the product of contact stress P and relative velocity V (PPV) at a constant value in the radial direction, a novel processing technology with functionally graded and composite structured lapping and polishing plate (FG/CS-LPP) is proposed in this article, which is based on the existing design and mechanical properties research of particle-reinforced polymer-based functionally graded materials (FGMs). [11][12][13][14] By virtue of FGMs, which are composed of two or more materials with quasicontinuous gradient changes in composition and structure, Young's modulus of lapping and polishing plate (LPP) can be designed to be gradient distributed along the radial direction, and it leads to function-oriented design. Therefore, it is necessary to study the contact problem of FGMs to provide theoretical guidance for the structure and parameter design of materials.…”

Section: Introductionmentioning

confidence: 99%

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Contact stress prediction model of double‐layer elastomer with functionally graded and composite structure

et al. 2021

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As hard and brittle materials are widely used in the modern industry, it is essential to effectively achieve uniform material removal. In the present study, a contact stress prediction model for double-layer elastomer under uniform displacement load was proposed. It aims to predict the contact stress distribution based on the structure size and material parameters of the double-layer elastomer and optimize the relevant parameters to improve the uniformity of material removal. The functionally graded and composite structured lapping and polishing plate (FG/CS-LPP) was developed by mixing abrasive particles and rubber with different mass ratios to get different Young's moduli. Through optical microscope, the surface morphology was observed, and the mechanism of Young's modulus gradient change was demonstrated. After numerical simulation analysis, the effect of Young's modulus fluctuation on contact stress distribution trend was evaluated. As for the contact stress prediction model, an equivalent Young's modulus model and compensation function H(z) was introduced to simplify the analytical process. Further, the obtained equivalent equation was verified by simulations and experiments with an average percentage deviation of~2% and~6%, respectively. By fitting calculated and simulated values with a deviation of less than 5%, the compensation function H(z) was established. Finally, the contact stress prediction model was obtained and validated by simulations and experiments, the percentage deviation is less than 13%. Accordingly, the contact stress prediction model can provide a theoretical basis for FG/CS-LPP to achieve uniform material removal.

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Section: Principle Analysismentioning

confidence: 99%