NDLI: Accurate modelling of the crush behaviour of thin tubular columns using material point method

Content Provider	Springer Nature Link
Author	Yang, PengFei Meguid, S. A. Zhang, Xiong
Copyright Year	2013
Abstract	In this paper, we apply the material point method (MPM), also known as a meshfree method, to examine the crush behaviour of thin tubular columns. Unlike the finite element method, randomly-distributed-weak-particle triggers were used to account for the deformation behaviour of collapse modes. Both symmetric and asymmetric modes of deformation and their associated mean collapse loads are determined for an elasto-plastic constitutive law describing the tubular columns. Attention was devoted to the accuracy and the convergence of the MPM simulation, which is determined by the number of the particles and the size of the background cells used in our explicit solver. Furthermore, a novel contact approach was adopted to establish the crush behaviour of the tubular columns. Two aspects of the work were accordingly examined, including three different crush velocities (5, 10 and 15 m/s) and varied geometrical features of the tube (t/d and l/d) based on the deformation history. The results of our model, which were compared with existing analytical predictions and experimental findings, identify the critical geometric features of the tubular columns that would dictate the deformation mode as being either progressive collapse or following Euler’s buckling mode.
Starting Page	1209
Ending Page	1219
Page Count	11
File Format	PDF
ISSN	16747348
Journal	Science in China Series G
Volume Number	56
Issue Number	6
e-ISSN	18691927
Language	English
Publisher	SP Science China Press
Publisher Date	2013-05-07
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	thin tubular columns crush material point method deforamtiom mode elasto-plastic mean collapse load Physics Classical Continuum Physics Astronomy, Observations and Techniques
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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