Modified fixed-pole approach in geometrically exact spatial beam finite elements (CROSBI ID 216060)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Gaćeša, Maja ; Jelenić, Gordan
engleski
Modified fixed-pole approach in geometrically exact spatial beam finite elements
A family of spatial beam finite elements based on the fixed-pole approach is developed and presented in this work. The family consists of three different interpolation options, which arise as a consequence of the fact that the virtual position vector has been interpolated in a non-linear manner, and depends on the actual position vector not only at the nodal points, but also at the integration points. All three formulations turn out to be non-invariant and path-dependent. In two of them, however, this problem may be easily solved by interpolating the total local rotations, which also makes the procedure more robust in handling large load increments.
geometrically exact beam theory; xed-pole approach; strain invariance; path dependence
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Podaci o izdanju
99
2015.
39-48
objavljeno
0168-874X
10.1016/j.finel.2015.02.001