Open AccessElastoplastic finite element analysis for wet multidisc brake during lasting braking
Author(s) -
Zhanling Ji,
Yunhua Li,
Sujun Dong,
Peng Zhang,
Yunze Li
Publication year - 2015
Publication title -
thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci141121016j
Subject(s) - finite element method , brake , mechanics , plasticity , materials science , stress (linguistics) , dimensionless quantity , heat transfer , coupling (piping) , constitutive equation , structural engineering , physics , engineering , composite material , linguistics , philosophy , metallurgy
Addressed to serious heat degradation problem of the braking continuously performed in the drag brake application for a long time, finite element analysis for bidirectional thermal-structure coupling is adopted to investigate temperature and stress when material properties are temperature-dependent. Based on the constitutive relations of heat transfer and strain-stress, three-dimensional transient finite element equilibrium equations with many kinds of boundary conditions for bidirectional thermal-structure coupling were derived. And it was originally presented that start time, location, severity and evolution laws of plastic deformation were depicted using dimensionless stress distribution contour with the yield limit related to temperature. The change laws of plastic element number and contact area versus braking time were expressed by plasticity ratio and contact ratio curves, respectively. The laws revealed by the numerical calculation results are in accordance with the objective perception and reasoning
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