Bibliographic Citation
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Title | Dilatant plasticity or upper bound estimates for porous ductile solids |
Creator/Author | Richelsen, A.B. ; Tvergaard, V. (Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Solid Mechanics) |
Publication Date | 1994 Aug 01 |
OSTI Identifier | OSTI ID: 6929550 |
Other Number(s) | ISSN0956-7151; CODEN: AMATEB |
Resource Type | Journal Article |
Resource Relation | Acta Metallurgica et Materialia ; Vol/Issue: 42:8 |
Subject | 360103 -- Metals & Alloys-- Mechanical Properties; METALS-- MECHANICAL PROPERTIES; DILATANCY;DUCTILITY;MATHEMATICAL MODELS;PLASTICITY |
Related Subject | ELEMENTS;MECHANICAL PROPERTIES;TENSILE PROPERTIES |
Description/Abstract | Unit cell model analyses are carried out here for non-hardening elastic-plastic solids containing small voids, to obtain a more complete understanding of the effect of different stress states and void shapes on the growth of voids to coalescence.^Both plane strain analyses for cylindrical voids and full three-dimensional analyses for a material containing a periodic array of spherical voids are carried out, and the results are related to previous results obtained by an axisymmetric model.^It is shown that the predictions are reasonably well represented by a dilatant plasticity model, developed for a porous ductile material.^Also, the cell model analyses fully capture the transition from an early stage of overall plastic yielding to the final stage of void coalescence by local necking of intervoid ligaments. |
Country of Publication | United States |
Language | English |
Format | Pages: 2561-2577 |
System Entry Date | 2001 May 13 |
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