On embedded discontinuity finite elements for modelling fractures in 2d solids and frames
Abstract eng: We discuss the complete failure computations of 2d solids and planar frames by the Embedded discontinuity Finite Element Method (EFEM). As regarding the 2d solids, we briefly present some important issues related to the optimal EFEM quadrilaterals, such as: the design of the completely stress-locking-free EFEM quadrilateral, the stress-hybrid EFEM quadrilateral, the effective implementation of either coupled (in the sense of the fracture modes) or uncoupled rigid-inelastic traction-separation softening cohesive laws for the discontinuity, the design of an efficient tracking algorithm for propagation of a single discontinuity (or several non-overlapping discontinuities) across the 2d finite element mesh, and the design of robust solution method that does not rely on a discontinuity tracking algorithm. The motivation behind the work on those issues is an aim to optimize the EFEM quadrilateral (and related tracking algorithm) so that it could become a really robust, reliable and easy to use numerical tool for performing complete failure computations of 2d solids, which is presently still not the case. As regarding the planar frames, we briefly summarize the pluses and minuses of our recently designed EFEM planar beam finite elements that can be used for the complete failure analysis of steel and reinforced concrete frames.
Publisher:
Taylor and Francis Group, London, UK
Conference Title:
Conference Title:
Sixth International Conference on Structural Engineering, Mechanics and Computation
Conference Venue:
Cape Town, South Africa
Conference Dates:
2016-09-05 / 2016-09-07
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-09-20, last modified 2016-09-20
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