Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Karttunen, Anssi T."'
Autor:
Karttunen, Anssi T., Reddy, J. N.
A discrete-to-continuum transformation to model 2-D discrete lattices as energetically equivalent 1-D continuum beams is developed. The study is initiated in a classical setting but results in a non-classical two-scale micropolar beam model via a nov
Externí odkaz:
http://arxiv.org/abs/2010.06271
A displacement-based, geometrically nonlinear finite element model is developed for lattice core sandwich panels modeled as 2-D equivalent single-layer (ESL), first-order shear deformation theory (FSDT) micropolar plates. The nonlinearity is due to t
Externí odkaz:
http://arxiv.org/abs/2005.13021
Publikováno v:
International Journal of Solids and Structures, 170, 82-94 (2019)
A 2-D micropolar equivalent single-layer (ESL), first-order shear deformation (FSDT) plate model for 3-D web-core sandwich panels is developed. First, a 3-D web-core unit cell is modeled by classical shell finite elements. A discrete-to-continuum tra
Externí odkaz:
http://arxiv.org/abs/1910.08402
A geometrically nonlinear sandwich beam model founded on the modified couple stress Timoshenko beam theory with K\'arm\'an kinematics is derived and employed in the analysis of periodic sandwich structures. The constitutive model is based on the mech
Externí odkaz:
http://arxiv.org/abs/1903.07805
A geometrically nonlinear finite element model is developed for the bending analysis of micropolar Timoshenko beams using the principle of virtual displacements and linear Lagrange interpolation functions. The nonlinearity enters the model via a nonl
Externí odkaz:
http://arxiv.org/abs/1901.00775
Publikováno v:
KARTTUNEN, A. T., REDDY, J. N., AND ROMANOFF, J. Two-scale constitutive modeling of a lattice core sandwich beam. Composites Part B: Engineering, 160 (2019), 66-75
Constitutive equations are derived for a 1-D micropolar Timoshenko beam made of a web-core lattice material. First, a web-core unit cell is modeled by discrete classical constituents, i.e., the Euler-Bernoulli beam finite elements (FE). A discrete-to
Externí odkaz:
http://arxiv.org/abs/1810.06385
Publikováno v:
Compos. Struct. 2018;185:656-664
We develop a micropolar Timoshenko beam theory and use it to model web-core sandwich beams. The beam theory is derived by a vector approach and the general displacement solution to the governing sixth-order equations is given. A nodally-exact micropo
Externí odkaz:
http://arxiv.org/abs/1802.08121
Publikováno v:
In Composite Structures 15 March 2019 212:586-597
Publikováno v:
In International Journal of Solids and Structures February 2017 106-107:251-263
Publikováno v:
In European Journal of Mechanics / A Solids July-August 2016 58:202-210