APPLICATION OF THE FINITE-ELEMENT METHOD TO POWDERED METAL COMPACTION PROCESSES

被引：17

作者：

HWANG, BB

KOBAYASHI, S

机构：

[1] Department of Mechanical Engineering, University of California, Berkeley

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 1991年 / 31卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0890-6955(91)90056-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A plasticity theory is summarized for a powdered metal compact. The constitutive equation is applied to the variational principle and its discretization is developed. The discretized formulation has been implemented into the finite element code and the program has been tested and applied to simulations of axisymmetric die pressings with copper powders. The simulation includes single-action and double-action pressings of solid cylinders as well as cylindrical rings. Predictions are made for density distributions, mean stress distributions, load-stroke relationships, average density as function of height, average density as function of radius, pressure distributions along die-walls and punches, and force fraction transmitted to the stationary punch. Some of the predicted solutions are compared with experimental observations from the literature. It was found that the results from the finite element analysis, in general, agree very well with the experimental observations.

引用

页码：123 / 137

页数：15

共 25 条

[1]

Wisker, Johns, The economics of powder forging relative to competing processes—present and future, Modern Developments in Powder Metallurgy, 7, (1974)

[2]

Jones, New Perspectives in Powder Metallurgy, 6, (1973)

[3]

Kobayashi, Oh, Altan, Metal Forming and the Finite-Element Method, (1989)

[4]

Oh, Gegel, ALPIDP-modeling of P/M forming by the finite element method, Proc. NAMRC XIV, (1986)

[5]

Oh, Wu, Park, Application of the finite element method to P/M forming processes, Proc. 2nd ICPT, (1987)

[6]

Im, Kobayashi, Finite element analysis of plastic deformation of porous materials, Metal Forming and Impact Mechanics, (1985)

[7]

Im, Kobayashi, Analysis of axisymmetric forging of porous materials by the finite element method, Adv. Manufact. Process., 1, (1986)

[8]

Im, Kobayashi, Coupled thermo-viscoplastic analysis in plane-strain compression of porous materials, Adv. Manufact. Process., 1, (1986)

[9]

Ivensen, Densification of Metal Powders During Sintering, pp. 1-242, (1973)

[10]

Yan, Sintering of ceramics and metals, Advances in Powder Technology, (1981)

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