Effects of 'sinking in' and 'piling up' on estimating the contact area under load in indentation

Yang-Tse Cheng; Che-Min Cheng

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Effects of 'sinking in' and 'piling up' on estimating the contact area under load in indentation

机译：“沉入”和“堆积”对估算压痕载荷下的接触面积的影响

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The phenomena of the 'piling up' and 'sinking-in' of surface profiles in conical indentation in elastic-plastic solids with work hardening are studied using dimensional and finite-element analysis. The degree of sinking in and piling up is shown to depend on the ratio of the initial yield strength Y to Young's modulus E and on the work-hardening exponent n. The widely used procedure proposed by Oliver and Pharr for estimating contact depth is then evaluated systematically. By comparing the contact depth obtained directly from finite-element calculations with that obtained from the initial unloading slope using the Oliver-Pharr procedure, the applicability of the procedure is discussed.

机译：使用尺寸和有限元分析方法研究了带有加工硬化的弹塑性固体中圆锥形压痕中表面轮廓的“堆积”和“下沉”现象。显示的下沉和堆积程度取决于初始屈服强度Y与杨氏模量E的比值以及加工硬化指数n。然后系统地评估了Oliver和Pharr提出的用于估计接触深度的广泛使用的程序。通过将直接从有限元计算获得的接触深度与使用Oliver-Pharr方法从初始卸载斜率获得的接触深度进行比较，讨论了该方法的适用性。

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《Philosophical Magazine Letters》 |1998年第2期|共6页
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Yang-Tse Cheng; Che-Min Cheng;
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中图分类物理学;
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1. Effects of 'sinking in' and 'piling up' on estimating the contact area under load in indentation [J] . Yang-Tse Cheng, Che-Min Cheng Philosophical Magazine Letters . 1998,第2期

机译：“沉入”和“堆积”对估算压痕载荷下的接触面积的影响
2. Effects of loading rate on development of pile-up during indentation creep of polycrystalline copper [J] . Jian Chen, Yuanfang Shen, Wenlin Liu, Materials Science and Engineering . 2016,第feba22期

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3. Algebraic Equations for the Pile-Up Geometry in Debris Particle Indentation of Rolling Elastohydrodynamic Contacts [J] . Nikas George K. Journal of Tribology . 2016,第2期

机译：滚动弹性流体动力接触中碎屑颗粒压痕中堆积几何的代数方程
4. Indentation Curve Analysis for Pile-up, Sink-in and Tip-Blunting Effects in Sharp Indentations [C] . Yeol Choi, Baik-Woo Lee, Ho-Seung Lee, Symposium on Thin Films - Stresses and Mechanical Properties X; 20031201-20031205; Boston,MA; US . 2003

机译：尖锐压痕中堆积，下沉和尖端钝化的压痕曲线分析
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8. Implementation of Pile Group Studies:Pile Loads and Lateral Stability of Piles in Pile Groups and Effects of Pile Cap on Lateral Capacity of Pile Groups. [R] . kim, jai b. currato,peter j. 1975

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Effects of 'sinking in' and 'piling up' on estimating the contact area under load in indentation

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