Engineering Computations: Volume 5 Issue 3

Critical state models in computational geomechanics

A. Gens, D.M. Potts

Elasto‐plastic models based on critical state formulations have been successful in describing many of the most important features of the mechanical behaviour of soils…

Contact analysis of large numbers of interacting bodies using discrete modal methods for simulating material failure on the microscopic scale

John R. Williams

There has been interest recently in analysing soil, ceramic powders and other materials on the microscopic level so that macroscopic phenomena, such as failure, can be…

A material law for coupled local yielding and geometric instability

B. Kröplin, D. Dinkler

The load carrying capacity of steel structures, built of slender members like bridge cross‐sections, depends on coupled yielding and buckling of the stringers and the…

Integration along the path of loading in elastic‐plastic problems

J.B. Martin, W.W. Bird

This paper considers the classical problem of the deformation of an elastic‐plastic body subjected to a prescribed history of loading. Attention is focused on the basis…

Yield surfaces for perforated plates

M. König

A method is presented by which elastoplastic constitutive relations for the solid material equivalent to a perforated plate can be obtained, by performing numerical…

Dynamic elastic‐plastic behaviour of a frame

Stefan Messmer, Mahir Sayir

The full time response of a space frame under impact loading perpendicular to the frame plane is discussed. Theoretical solutions and experimental results are presented…

Effects of non‐proportional loadings in cyclic elasto‐viscoplasticity: experimental, theoretical and numerical aspects

A. Benallal, D. Marquis

An elasto‐viscoplastic constitutive model valid under general complex cyclic loadings is proposed to describe the multiaxial behaviour of engineering metallic materials…

Viscoelastic finite element analysis in design of potash mines

Y.S. Yu, C.G. Ong, P. Mottahed

Computer simulation is playing an increasingly important role in evaluating the short and long term structural stability of underground mine openings, and in ground…

Exact closed‐form solution of the return mapping algorithm in plane stress elasto‐viscoplasticity

J.C. Simo, S. Govindjee

In Simo and Taylor, the classical radial return algorithm of Wilkins and Krieg and Key for plane strain and three‐dimensional J2‐flow theory, is extended to the case of…