Acta Mechanica
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Elasticity solutions for a transversely isotropic functionally graded annular sector plate
Acta Mechanica - Tập 228 - Trang 2603-2621 - 2017
This paper presents three-dimensional elasticity solutions for an annular sector plate made of transversely isotropic functionally graded material (FGM) subjected to concentrated forces
$$\left( X,Y,0 \right) $$
or couples
......
A finite elastic-plastic theory and invariance requirements
Acta Mechanica - Tập 17 Số 3-4 - Trang 277-290 - 1973
Elastic Gaussian wave packets in isotropic media
Acta Mechanica - Tập 71 - Trang 95-114 - 1988
The theory of Gaussian wave packet (GWP) propagation in elastic materials is developed. The GWP solutions are in the form of localized disturbances with Gaussian spatial envelopes at any instant in time. The method is explicitly time dependent, but is conceptually no more difficult than time harmonic ray theory. The equations of propagation and evolution are very similar to those of standard, elas......
Wave propagation and breaking in electrically polarizable media
Acta Mechanica - Tập 40 Số 3-4 - Trang 141-146 - 1981
A new possibilistic reliability index definition
Acta Mechanica - Tập 210 - Trang 291-303 - 2009
In this work, a new and efficient definition for a reliability index is explored for real structural engineering problems. The main innovative aspect is that it is based on a possibilistic criteria instead of a probabilistic one. Its definition deals with engineering cases where uncertain parameters of basic structural reliability problems can be operatively treated as fuzzy variables. A fuzzy-bas......
Investigation of coupled instability for shear flexible FG sandwich I-beams subjected to variable axial force
Acta Mechanica - - 2018
Axisymmetric vibration of a soft elastic rod with surface tension-induced residual stress
Acta Mechanica - Tập 233 - Trang 2405-2413 - 2022
This paper studies the axisymmetric vibration of a soft elastic rod with surface tension based on the modified Gurtin–Murdoch model. In contrast to the original Gurtin–Murdoch model (GM model) in which surface tension is treated as a finite value while the residual stress in the bulk induced by it is however treated as an infinitesimal quantity, the present modified model supposes both to be finit......
Nonlinear analysis of RC members subjected to combined bending–shear–torsion stresses: a numerical multi-fiber displacement-based finite element model with warping
Acta Mechanica - Tập 232 - Trang 2635-2658 - 2021
An enhanced multi-fiber beam–column element suitable for the analysis of reinforced concrete members including the torsional effect is presented in this paper. The model is developed based on displacement formulation with the assumptions of small displacement. The section kinematics is based on the assumptions of a two-node Timoshenko beam and enhanced by introducing additional degrees of freedom ......
On the incremental plastic work and related aspects of invariance – Part I
Acta Mechanica - Tập 189 - Trang 1-22 - 2006
Taking for granted that the free energy function is invariant under a change of a finite strain measure and/or the reference configuration, Hill's transformation rules for selected fundamental constitutive quantities (such as tangent elastic modulus, plastic increments of total strain and work conjugate stress, the work of work-conjugate stress, the work expended in the plastic part of incremental......
Thermal instability of a rotating curved plate subjected to an applied magnetic field
Acta Mechanica - Tập 214 - Trang 343-356 - 2010
The effect of a magnetic field on thermal instability in mixed convection flow on a heated rotating convex surface is studied in this paper. The onset position characterized by the Goertler number G
δ
depends on the Grashof number, the rotational number, the Prandtl number, the magnetic field parameter, and the wave number. The buoyancy f......
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