Simulation and experimental study on the molding process for microgrooveson optical glass

ZHOU Tian-feng; XIE Jia-qing; LIU Yang; LIANG Zhi-qiang; WANG Xi-bin

doi:10.3788/OPE.20162413.0446

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Simulation and experimental study on the molding process for microgrooveson optical glass

更新时间：2020-08-13

- Simulation and experimental study on the molding process for microgrooveson optical glass
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 446-453(2016)
- 作者机构：
  
  北京理工大学机械与车辆学院北京,100081
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0446
  CLC： TH128
- Received：10 May 2016，
  
  Revised：07 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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周天丰, 解加庆, 刘洋等. 光学玻璃微沟槽模压成形仿真与试验研究[J]. 光学精密工程, 2016,24(10s): 446-453

ZHOU Tian-feng, XIE Jia-qing, LIU Yang etc. Simulation and experimental study on the molding process for microgrooveson optical glass[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 446-453
周天丰, 解加庆, 刘洋等. 光学玻璃微沟槽模压成形仿真与试验研究[J]. 光学精密工程, 2016,24(10s): 446-453 DOI： 10.3788/OPE.20162413.0446.

ZHOU Tian-feng, XIE Jia-qing, LIU Yang etc. Simulation and experimental study on the molding process for microgrooveson optical glass[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 446-453 DOI： 10.3788/OPE.20162413.0446.

摘要

为了实现光学玻璃微沟槽的高精度模压成形制造，通过模压成形有限元仿真与试验，揭示玻璃微沟槽模压成形中材料高温形变规律。首先，将传统黏着摩擦模型与Wanheim/Bay摩擦模型相结合，建立了改进的玻璃-模具界面摩擦模型，用于模压成形过程的有限元仿真；其次，建立了玻璃高温粘弹性本构模型，对玻璃微沟槽模压成形过程进行仿真，分析了改进的玻璃-模具界面摩擦模型对成形应力的影响；最后，利用Ni-P镀层微沟槽模具开展玻璃微沟槽模压成形试验，制造出了光学玻璃微沟槽结构。结果表明：使用改进的玻璃-模具界面摩擦模型，摩擦界面呈现出明显的界面滑移现象，单元应力达到剪切阈值后呈现抖动上升趋势；与库伦摩擦模型相比，改进的玻璃-模具界面摩擦模型可以更加精确描述高温玻璃界面摩擦特性；试验测量表明微沟槽高度方向成形误差为0.275

m。

Abstract

In order to manufacture high precision optical glass microgrooves

the finite element simulation and experiment on glass molding processare carried out to reveal the glass deformation behaviorat high temperature during microgroove molding. Firstly

a modified glass-mold interface friction model is established by combining the general adhesive friction model with the Wanheim/Bay friction model

and the modified model is applied to the finite element calculation. Secondly

the high temperature viscoelastic constitutive model of glass is established

the glass microgroove molding process is simulated

and the influence of the improved glass-mold interface friction model on the forming stress is analyzed. Finally

the microgrooves are fabricated by using Ni-P plating mold. The results present that a distinct interface slip phenomenon appeared when the modified glass-mold interface friction model is applied in simulation.The element stress curve shows jitter rising trend after reaching the shear threshold value.Compared with the Coulomb friction model

the modified model can describe the interface friction characteristics of high temperature glass more accurately. The height direction replication error of glass microgrooves formed by molding process is 0.275

关键词

Keywords

references

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