Search Results - "Niiranen, Jarkko"

Anisotropic strain gradient thermoelasticity for cellular structures: Plate models, homogenization and isogeometric analysis by Khakalo, Sergei, Niiranen, Jarkko

“…For three-dimensional cellular plate-like structures with a triangular (extruded lattice) microarchitecture, the article develops a pair of two-scale plate…”
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Locking-free variational formulations and isogeometric analysis for the Timoshenko beam models of strain gradient and classical elasticity by Balobanov, Viacheslav, Niiranen, Jarkko

“…The Timoshenko beam bending problem is formulated in the context of strain gradient elasticity for both static and dynamic analysis. Two non-standard…”
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Lattice structures as thermoelastic strain gradient metamaterials: Evidence from full-field simulations and applications to functionally step-wise-graded beams by Khakalo, Sergei, Niiranen, Jarkko

“…The present work investigates the mechanical and thermomechanical bending response of beam structures possessing a triangular lattice microarchitecture. The…”
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Form II of Mindlin's second strain gradient theory of elasticity with a simplification: For materials and structures from nano- to macro-scales by Khakalo, Sergei, Niiranen, Jarkko

“…The fundamental equations for Form II of Mindlin's second strain gradient elasticity theory for isotropic materials are first derived. A corresponding…”
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Microarchitecture-dependent nonlinear bending analysis for cellular plates with prismatic corrugated cores via an anisotropic strain gradient plate theory of first-order shear deformation by Torabi, Jalal, Niiranen, Jarkko

“…•Developing microstructure-dependent FE nonlinear bending of lattice structures.•Developing mathematical model based on the anisotropic strain gradient plate…”
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Nonlinear finite element free and forced vibrations of cellular plates having lattice-type metamaterial cores: a strain gradient plate model approach by Torabi, Jalal, Niiranen, Jarkko

“…•Nonlinear free and forced vibration of cellular plates with the triangularly prismatic core is studied.•An efficient theoretical formulation based on the…”
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Structural buckling analysis of pre-twisted strips by Khakalo, Sergei, Niiranen, Jarkko

“…This article focuses on the buckling response of columns formed by pre-twisting a flat, narrow and straight material strip of a rectangular cross section. The…”
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Isogeometric analysis of higher-order gradient elasticity by user elements of a commercial finite element software by Khakalo, Sergei, Niiranen, Jarkko

“…This article is devoted to isogeometric analysis of higher-order strain gradient elasticity by user element implementations within a commercial finite element…”
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Alkusanat by Niiranen, Jarkko

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Modelling size-dependent bending, buckling and vibrations of 2D triangular lattices by strain gradient elasticity models: Applications to sandwich beams and auxetics by Khakalo, Sergei, Balobanov, Viacheslav, Niiranen, Jarkko

“…The present work is devoted to the modelling of strongly size-dependent bending, buckling and vibration phenomena of 2D triangular lattices with the aid of a…”
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Gradient-elastic stress analysis near cylindrical holes in a plane under bi-axial tension fields by Khakalo, Sergei, Niiranen, Jarkko

“…This paper is devoted to a gradient-elastic stress analysis of an infinite plate weakened by a cylindrical hole and subjected to two perpendicular and…”
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Technical note: Open-source finite element software – from the early to the present by Niiranen, Jarkko

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Alkusanat by Niiranen, Jarkko

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Nonlinear finite element analysis within strain gradient elasticity: Reissner-Mindlin plate theory versus three-dimensional theory by Torabi, Jalal, Niiranen, Jarkko, Ansari, Reza

“…Nonlinear plate bending within Mindlin's strain gradient elasticity theory (SGT) is investigated by employing somewhat non-standard finite element methods. The…”
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Multi‐patch variational differential quadrature method for shear‐deformable strain gradient plates by Torabi, Jalal, Niiranen, Jarkko, Ansari, Reza

“…The integration of generalized differential quadrature techniques and finite element (FE) methods has been developed during the past decade for engineering…”
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Editorial by Niiranen, Jarkko

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Kirchhoff–Love shells within strain gradient elasticity: Weak and strong formulations and an H 3 -conforming isogeometric implementation by Balobanov, Viacheslav, Kiendl, Josef, Khakalo, Sergei, Niiranen, Jarkko

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Alkusanat by Niiranen, Jarkko

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Alkusanat by Niiranen, Jarkko

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Foreword by Niiranen, Jarkko

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