A Thermoplastic BEM Analysis for Substructured Axisymmetric Bodies
Publication: Journal of Engineering Mechanics
Volume 113, Issue 12
Abstract
A boundary element formulation for thermoplastic analysis of axisymmetric bodies subjected to axisymmetric loads is developed. This formulation is implemented in a multiregion system that utilizes quadratic isoparametric shape functions to model the geometry and field variables of the boundary and domain of a body. The kernel functions are presented in an appendix and the singularities associated with these kernels are discussed. New techniques are described to calculate the coefficients associated with the singular nodes. An iterative procedure known as the initial stress algorithm is adopted for the incremental thermoplastic analysis. An advanced implementation of the algorithm includes a time‐saving feature which reduces the number of iterations needed for convergence by utilizing the past history of initial stress rates to estimate the values of the initial stress rates of the next load increment.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 113 • Issue 12 • December 1987
Pages: 1880 - 1900
Copyright
Copyright © 1987 ASCE.
History
Published online: Dec 1, 1987
Published in print: Dec 1987
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