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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Computational Methods

Accelerated proximal gradient method for equilibrium analysis of elastoplastic spatial truss structures

< Table of Contents for Computational Methods
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Computational Methods
  • Pages: 6
  • Title: Accelerated proximal gradient method for equilibrium analysis of elastoplastic spatial truss structures
  • Author(s): Yoshihiro Kanno
  • Keywords: plasticity, incremental analysis, accelerated gradient scheme, proximal gradient method, convex optimization
Abstract
This paper presents an accelerated proximal gradient method for elastoplastic analysis of large-scale trusses. The method can be extended to cable.truss structures. When we assume small deformation of the structure and a nonnegative hardening modulus of each structural component, it is well known that the incremental problem can be recast as (convex) quadratic programming (QP). In this paper, we present an equivalent unconstrained optimization problem. Efficiency of an accelerated first-order optimization method is compared with a standard QP solver that implements an interior-point method.

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