Engineering Computations: Volume 2 Issue 2

Elasto‐viscoplastic analysis of anisotropic laminated plates and shells

D.R.J. Owen, Guo Qiang Liu

An elasto‐viscoplastic analysis of anisotropic plates and shells is undertaken by means of the finite element displacement method. A thick shell formulation accounting for shear…

Application of variable metric methods to structural synthesis

Garret N. Vanderplaats, Hiroyuki Sugimoto

Much recent work in numerical optimization has emphasized the use of variable metric methods which use the Lagrangian. The principal concept is to use a variable metric algorithm…

Calibration and application of an elastic viscoplastic constitutive equation for steels in hot‐rolling conditions

S. Cescotto, H. Grober

An elastic viscoplastic constitutive equation for steels at high temperature is calibrated on a set of torsion tests performed by IRSID for different temperatures, strain rates…

New re‐ordering algorithm for skyline method

Takeo Taniguchi, Akira Soga

The minimum profile problem of a sparse matrix is theoretically treated, and by using the results a new profile reducer is proposed. Numerical experiments clarify that the new…

Application of the FEM to elastoplastic wave propagation in metals

E. El‐Magd, W. Abdel‐Ghany, M. Homayun

Under dynamic loading shock waves propagate in metallic materials and may be concentrated after reflection from fixed boundaries. In these cases high strain rate gradients are…

Numerical solution to pneumatic forming problems of axisymmetric superplastic thin shells

S.S. Gavriushin, N.T. Gavriushina

A numerical method is presented for analysis of the pneumatic forming process of axisymmetric superplastic thin shells. The governing non‐linear partial differential equations are…

Active control of building structures under measured seismic loads

J. Rodellar, A.H. Barbat

The concept of active control has been introduced in recent years in order to reduce the seismic response of structures. A predictive control methodology is used to formulate a…

A new formulation for numerically integrated finite elements

R.M. Delgado, R.A.F. Martins

A quadrilateral linear element for plane stress/plane strain analysis, formulated using a system of bars located at the Gauss integration points, is presented. A special bar…

‘Extended’ variational formulations and finite element models for the elastohydrodynamic lubrication problem

S. Alliney, A. Strozzi, A. Tralli

A finite element model for the elastohydrodynamic lubrication problem is presented. A coupling between the hydrodynamic equation and the foundation compliance equation is…

A 4‐node thin hybrid plate finite element

Matti J. Loikkanen

A 4‐node, 12‐d.o.f. plate bending element based on the assumed‐stress hybrid formulation is described. The nine stress fields are derived from the 12‐term, Adini—Clough polynomial…

Structural analysis of large scale problems using a microcomputer

Steven A. Brown, Manohar P. Kamat

A successful implementation of user‐friendly large scale finite element (SNAP/FE) and boundary element (SNAP/BE) structural numerical analysis programs on an IBM PC with 256 kbyte…