Journal ArticleDOI
Unified finite elements based on the classical and shear deformation theories of beams and axisymmetric circular plates
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TLDR
In this paper, a unified finite element model that contains the Euler-Bernoulli, Timoshenko and simplified Reddy third-order beam theories as special cases is presented, and a stiffness matrix based on the exact analytical form of the solution of the first-order theory of circular plates is derived.Abstract:
In this paper a unified finite element model that contains the Euler-Bernoulli, Timoshenko and simplified Reddy third-order beam theories as special cases is presented. The element has only four degrees of freedom, namely deflection and rotation at each of its two nodes. Depending on the choice of the element type, the general stiffness matrix can be specialized to any of the three theories by merely assigning proper values to parameters introduced in the development. The element does not experience shear locking, and gives exact generalized nodal displacements for Euler-Bernoulli and Timoshenko beam theories when the beam is homogeneous and has constant geometric properties. While the Timoshenko beam theory requires a shear correction factor, the third-order beam theory does not require specification of a shear correction factor. An extension of the work to axisymmetric bending of circular plates is also presented. A stiffness matrix based on the exact analytical form of the solution of the first-order theory of circular plates is derived.read more
Citations
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Journal ArticleDOI
On locking-free shear deformable beam finite elements
TL;DR: In this article, a locking-free finite element model using the form of the exact solution of the Timoshenko beam theory is developed, which yields exact nodal values for the generalized displacements for constant material and geometric properties of beams.
Journal ArticleDOI
On applications of generalized functions to beam bending problems
TL;DR: In this paper, the auxiliary beam method was proposed to solve the problem of beam bending under singular loading conditions and having various jump discontinuities in the space of generalized functions. But it is only for Euler-Bernoulli beams.
Journal ArticleDOI
Free vibration analysis of Timoshenko beams by DSC method
Ömer Civalek,Okyay Kiracioglu +1 more
TL;DR: In this paper, Discrete singular convolution method is used for numerical solution of equation of motion of Timoshenko beam, which is very effective for the study of vibration problems of timoshenko beam.
Journal ArticleDOI
An overview of the relationships between solutions of the classical and shear deformation plate theories
J. N. Reddy,Chien Ming Wang +1 more
Journal ArticleDOI
A corotational finite element formulation for the analysis of planar beams
Yetzirah Urthaler,J. N. Reddy +1 more
TL;DR: In this article, an efficient and accurate locking-free corotational beam finite element for the analysis of large displacements and small-strain problems is developed, which incorporates the kinematics of all three theories.
References
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Journal ArticleDOI
A Simple Higher-Order Theory for Laminated Composite Plates
TL;DR: In this paper, a higher-order shear deformation theory of laminated composite plates is developed, which accounts for parabolic distribution of the transverse shear strains through the thickness of the plate.
Journal ArticleDOI
LXVI. On the correction for shear of the differential equation for transverse vibrations of prismatic bars
TL;DR: In this article, the correction for shear of the differential equation for transverse vibrations of prismatic bars is discussed, where the correction is based on the correction of the transverse vibration of a prismatic bar.
Journal ArticleDOI
X. On the transverse vibrations of bars of uniform cross-section
TL;DR: In this article, the transverse vibrations of bars of uniform cross-section were studied and the authors proposed a method to measure the transversal vibrations of a bar of uniform shape.
Journal ArticleDOI
A new rectangular beam theory
TL;DR: In this paper, a new theory for beams of rectangular cross-section which includes warping of the cross-sections is presented, and results for two typical static examples are given for both the new theory and Timoshenko beam theory.
Journal ArticleDOI
A higher order beam finite element for bending and vibration problems
Paul R. Heyliger,J. N. Reddy +1 more
TL;DR: In this paper, the finite element equations for a variationally consistent higher-order beam theory are presented for the static and dynamic behavior of rectangular beams, which correctly accounts for the stress-free conditions on the upper and lower surfaces of the beam while retaining the parabolic shear strain distribution.