• A new computational strategy for analysing plastic deformation processes

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Plastic deformation; computational strategy; plasticity theory

    • Abstract


      The paper describes a computer-based methodology for evaluating various strain and stress components within the body of a material undergoing plastic deformation. The strategy uses as input the grid distortion data, which provides the magnitudes of macroscopic particle velocities at discrete (nodal) points. To facilitate computation of the various strain-rate and strain components by explicit differentiation, B-spline functional relationships have been established for this data employing interpolating techniques. Numerical solutions obtained using this methodology have been compared with FEM predictions, which indicate that the results are in good agreement. Further, using plasticity theory, a set of partial differential equations have been established to describe the stress gradients induced due to materials processing. The mathematical formulations in the work are described only in polar coordinates, but the program VISIO can also handle the nodal displacements prescribed in rectangular coordinates too.

    • Author Affiliations


      N Chandrasekaran1 2

      1. Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad - 500 258, India
      2. Department of Mechanical Engineering, Karnataka Regional Engineering College, Surathkal - 574 157, India
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2023-2024 Indian Academy of Sciences, Bengaluru.