کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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514190 | 866708 | 2009 | 9 صفحه PDF | دانلود رایگان |
In this paper, a continuum-based (CB) beam element based on the original work of Belytschko [Nonlinear Finite Elements for Continua and Structures, Wiley, New York, 2001] has been modified and analysed in the framework of explicit finite element methods. Two main differences are introduced with respect to the original finite element technology proposed in Belytschko [Nonlinear Finite Elements for Continua and Structures, Wiley, New York, 2001]. Firstly, the velocity gradient tensor is computed in the slave nodes of the finite element rather than in the master nodes, enabling a more effective computational performance in terms of CPU-time as well as convergence. Secondly, the thickness of the element is assumed to be variable, which allows dilation and/or contraction when large deformation processes are involved. A series of numerical examples are presented in order to verify the robustness and capabilities of the algorithm.
Journal: Finite Elements in Analysis and Design - Volume 45, Issues 8–9, June–July 2009, Pages 583–591