نتایج جستجو برای: non-prismatic beam

تعداد نتایج: 1422572  

Journal: :journal of computational applied mechanics 0
ahmad modarakar haghighi school of civil engineering, college of engineering, university of tehran, tehran p.o. box 11365-4563, iran mohammad zakeri assistant professor, faculty of mechanical engineering, university of kashan, kashan, iran reza attarnejad ms graduate, faculty of mechanical engineering, university of kashan, kashan, iran

purpose– analysis of non-prismatic beams has been focused of attention due to wide use in complex structures such as aircraft, turbine blades and space vehicles. apart from aesthetic aspect, optimization of strength and weight is achieved in use of this type of structures. the purpose of this paper is to present new shape functions, namely 3-node basic displacement functions (bdfs) for derivati...

M. Mohammadi, M. Soltani,

In this paper, linear stability analysis of non-prismatic beam resting on uniform Winkler-Pasternak elastic foundation is carried out based on Eringen's non-local elasticity theory. In the context of small displacement, the governing differential equation and the related boundary conditions are obtained via the energy principle. It is also assumed that the width of rectangle cross-section varie...

Purpose– Analysis of non-prismatic beams has been focused of attention due to wide use in complex structures such as aircraft, turbine blades and space vehicles. Apart from aesthetic aspect, optimization of strength and weight is achieved in use of this type of structures. The purpose of this paper is to present new shape functions, namely 3-node Basic Displacement Functions (BDFs) for derivati...

Journal: :Materials research proceedings 2023

Abstract. Beamlike structures are commonly studied via 1D beam models, which more efficient than 3D finite element methods, but do not permit accurate predictions of stresses in non-prismatic cases. Despite the progress made their modeling, either direct approaches or dimensional reductions from formulations, analytical prediction and strains beamlike yet elements, with non-uniform properties b...

2010
Shabnam Jandaghi Semnani Reza Attarnejad

Non-prismatic beams have received great attention from engineers due to their capability in optimizing the strength and weight of the structure. In recent years, many researchers have worked on engineering problems related to static and dynamic analysis of either Euler–Bernoulli [1–3] or Timoshenko [4,5] beams. For short thick beams and rotating machineries, the Timoshenko beam theory presents ...

Journal: :IOP Conference Series: Materials Science and Engineering 2020

A prismatic beam made of a behaviorally nonlinear material is analyzed under aharmonic load moving with a known velocity. The vibration equation of motion is derived usingHamilton principle and Euler-Lagrange Equation. The amplitude of vibration, circular frequency,bending moment, stress and deflection of the beam can be calculated by the presented solution.Considering the response of the beam,...

Journal: :European Journal of Mechanics A-solids 2021

This study presents an efficient beam formulation for static and vibration analysis of 2D non-prismatic beams with the kinematic assumptions Timoshenko theory. Beams having complex configurations can be straightforwardly constructed by using B-spline basis functions, which are used descriptions axis sectional height. feature enables free-form strong curvatures to performed conveniently accurate...

Journal: :Composite Structures 2021

The Unified Formulation (UF) has gained attention as a powerful tool for efficient design of structural components. Due to the inherent flexibility its kinematics representation, arbitrary shape functions can be selected in different dimensions achieve high-fidelity characterisation response under load. Despite this merit, classical isoparametric description UF limits application prismatic stru...

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