Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Juha Paavola"'
Publikováno v:
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH. 140:82-91
The paper studies numerically the behaviour of a beam-to-column joint between a hat-shaped steel beam (WQ-beam) and a concrete-filled composite column in a slim floor steel-concrete composite frame. 3D continuum elements are used in the discretizatio
Autor:
Qimao Liu, Juha Paavola
Publikováno v:
Composite Structures. 183:21-34
The paper describes a general analytical sensitivity analysis method for the composite laminated plates and shells, which is applied to both classical and first-order shear deformation theories and based on the finite element methods. The first deriv
Publikováno v:
International Journal of Solids and Structures. 109:84-92
Buckling of centrosymmetric anisotropic beams is studied within strain gradient theory. First, the three dimensional anisotropic gradient elasticity theory is outlined. Then the dimension of the three dimensional theory is reduced, resulting in Timos
Publikováno v:
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik. 97:586-601
In this paper, the size effect on beam structures with centrosymmetric anisotropy is studied within strain gradient elasticity theory. Applying dimension reduction to the three dimensional anisotropic gradient elasticity, the third-order shear deform
Publikováno v:
Thin-Walled Structures. 157:107100
Two analytical models are developed to predict the load-bearing capacity of a beam-to-column joint inside a slim-floor composite frame. The load inside the joint is transferred mainly by a steel console welded to a concrete-filled steel column. Becau
Publikováno v:
Mechanics of Advanced Materials and Structures. 23:156-169
This article describes a second-order shape and cross-section optimization method of plane truss subjected to earthquake excitation. The method is based on gradient and Hessian matrix calculation. First, the first and second derivatives of dynamic re
Publikováno v:
Archive of Applied Mechanics. 85:877-892
The strain and velocity gradient framework is formulated for the third-order shear deformable beam theory. A variational approach is applied to determine the governing equations together with initial and boundary conditions. Within the gradient frame
Autor:
Juha Paavola, Qimao Liu
Publikováno v:
Applied Mathematical Modelling. 39:982-999
The paper describes an inter-story drift reliability-based optimization method of frames subjected to stochastic earthquake loads. First, the formulas for eigenvalue and eigenvector, drift PSD functions, drift spectral moments, drift reliabilities, t
Autor:
Juha Paavola, Seyed Mahmoud Mousavi
Publikováno v:
Mechanics Research Communications. 63:1-5
The distributed dislocation technique is applied to determine the behavior of a cracked concrete matrix containing an inclusion. The analysis of cracked concrete in the presence of inclusions such as steel expansions is a practical problem that needs
Autor:
Juha Paavola, Qimao Liu
Publikováno v:
Advances in Structural Engineering. 18:59-74
This paper describes an optimization procedure for seismic design of steel frames for multi-performance and multi-hazard levels under the different performance objectives. The optimization models and optimization techniques are incorporated in the se