In this paper, a mixed stress formulation for linear elastodynamic analysis based on a modified Hellinger–Reissner functional and a consistent approach for selecting finite element approximations are presented. The key idea in this new approach is to choose stress approximations by taking into account for suitable modes to equilibrate inertia forces. Feasibility and effectiveness of the proposed approach are numerically verified through three benchmark tests.
A consistent approach for mixed stress finite element formulations in linear elastodynamics / S. de Miranda; L. Molari; F. Ubertini. - In: COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING. - ISSN 0045-7825. - STAMPA. - 197:(2008), pp. 1376-1388. [10.1016/j.cma.2007.11.007]
A consistent approach for mixed stress finite element formulations in linear elastodynamics
DE MIRANDA, STEFANO;MOLARI, LUISA;UBERTINI, FRANCESCO
2008
Abstract
In this paper, a mixed stress formulation for linear elastodynamic analysis based on a modified Hellinger–Reissner functional and a consistent approach for selecting finite element approximations are presented. The key idea in this new approach is to choose stress approximations by taking into account for suitable modes to equilibrate inertia forces. Feasibility and effectiveness of the proposed approach are numerically verified through three benchmark tests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
