Implementation of glass transition physics in glass molding simulation

Haihui Ruan, L. C. Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Glass transition is the most important factor in the thermo-forming of glass elements of precise geometries such as optical glass lenses. Among many attempts to model the physics of glass transition, the Master equations based on the potential energy landscape (PEL) appear to be apropos. In this study, we used Monte-Carlo approach to approximately solve the master equations and further implement the Monte-Carlo method in the finite element simulation. We used Selenium as an example since its PEL has been quantified. Through the FEM simulations, it is found that the geometrical replication quality is the best when the forming is performed at the viscosity around 105∼10 6 Pa·s, that the residual stress developed in the cooling process can be minimized in the slow cooling process or through post-annealing process after moulding.
Original languageEnglish
Title of host publicationAdvances in Abrasive Technology XIV
Number of pages6
Publication statusPublished - 26 Sept 2011
Externally publishedYes
Event14th International Symposium on Advances in Abrasive Technology, ISAAT 2011 - Stuttgart, Germany
Duration: 18 Sept 201121 Sept 2011

Publication series

NameAdvanced Materials Research
ISSN (Print)1022-6680


Conference14th International Symposium on Advances in Abrasive Technology, ISAAT 2011


  • FEM
  • Finite element method
  • Glass molding
  • Glass transition
  • Monte-Carlo simulation

ASJC Scopus subject areas

  • Engineering(all)


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