The pyramid indentation process is analyzed using a three dimensional finite element method. The deformation behavior including compaction and pile-up of iron powder compacts is analyzed. The effect of random voids on the hardness measurement is studied.

D. Roshan Kumar

Ramarathnam Krishna Kumar

P. K. Philip

Compaction

Computer simulation

finite element method

HARDNESS TESTING

Mathematical models

POWDER COMPACTS

IRON POWDER METALLURGY

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Numerical investigations of pyramid indentation on powder compacts

Scripta Materialia

Finite-element analysis of large-strain problems involve severe mesh distortion in the course of modelling the material deformation. After some stage of deformation, the initial mesh becomes totally unacceptable from the accuracy point of view. At this stage, a proper remeshing and accurate transfer of state parameters to the new mesh has to be carried out to ensure proper process simulation. In this paper, the authors focus on the issues involved in the data transfer during remeshing. Large deformation elasto-plastic analysis using the Updated Lagrangian formulation is considered in this work. Two basic methods of transferring the smoothed old nodal data to the Gauss points of the new mesh are evaluated critically. The problem of violating the consistency condition that is associated with data transfer from the old mesh to the new mesh, and the effects of such violation, are discussed. A new method to transfer the contact gap information during remeshing with frictional contact boundary conditions is proposed. © 1998 Elsevier Science S.A.

Journal of Materials Processing Technology

Remeshing issues in the finite element analysis of metal forming problems

Powder Metallurgy

Stage 1 Compaction Behaviour of Tool Steel Powder Under Die Pressing

Journal of Engineering Materials and Technology

Analysis for Cold Die Compaction of Stainless-Steel Powder

Mechanics of Materials

Analysis of pyramid indentation of pressure-sensitive hard metals and ceramics

Computers & Structures

Finite element simulation of wedge indentation

Journal	Scripta Materialia
ISSN	13596462
Open Access	No