Algorithms for Accurate and Fast Plotting of Contour Surfaces in 3D Using Hexahedral Elements

Singh, Chandan Deep; Saini, J.S.

doi:10.1007/s40032-016-0233-1

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…As for material properties, various structures are assumed to be Q345 (elastic modulus: 2.06× 10 5 MPa; Poisson's ratio: 0.3; and density: 7.8×10 3 kg/m 3 ). The degree of densification of grids of each truss is appropriately controlled for meshing [7]. The truss structure adopts BEAM188 units.…”

Section: Fem-based Modelingmentioning

confidence: 99%

Analysis on structural dynamic characteristics of integrated intelligent tower construction machine under effects of strong winds

Li¹,

Tian²

2022

Vib. proced.

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In view of the fact that integrated intelligent tower construction machine which is designed to improve the construction efficiency and quality and operating conditions of bridge towers always withstand various wind loads (especially super typhoons or gusts) so that hidden dangers may exist in their structural safety and reliability, their structural dynamic characteristics analysis of effects of strong winds shall be an essential part in their design stage. For this purpose, Davenport wind speed spectra were used to simulate the extreme pulsating wind loads and their structural dynamic wind-induced responses were investigated by means of the finite element method (FEM) to gain the displacement and stress responses of key nodes and then determine their structural design safety. The results show that: the maximum stress and displacement occur in the upper parts of their frames; and the forces and displacement of their structural dangerous positions are within their corresponding safe ranges. Our analysis results can provide a theoretical reference for application and structural optimization of tower machine.

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Section: Fem-based Modelingmentioning

confidence: 99%

Analysis on structural dynamic characteristics of integrated intelligent tower construction machine under effects of strong winds

Li¹,

Tian²

2022

Vib. proced.

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“…The elastic modulus, Poisson's ratio and density of PTFE were 280 MPa, 0.4 and 2, 200 kg/m 3 , respectively. In terms of meshing, eight-node hexahedral elements were used, according to the structural characteristics of various rolling elements, while the mesh density values of their finite element models were properly controlled to guarantee calculation precision [15].…”

Section: Modal Analysis On Elastic Composite Cylindrical Rollersmentioning

confidence: 99%

Structures Dynamic Property Analysis of Elastic Composite Cylindrical Rolling Element

Yao

Qianxu

et al. 2021

International Journal of Rotating Machinery

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Elastic composite cylindrical roller bearing is a novel type of roller bearing whose rolling element is designed by innovating the rolling element structure of cylindrical roller bearings. For the purpose of investigating the dynamic properties of the rolling elements with different structural parameters and solving the modes of elastic composite cylindrical rolling element with different filling degrees, first, this study compares elastic composite cylindrical rolling element to solid cylindrical rolling element, in terms of natural frequency and vibration mode. Next, the integration time step is determined, based on the natural frequency of the vibration in the Y direction, the response of various rolling element, under impact loads, is solved. Furthermore, the laws of the energy changes and nodal displacement variations of rolling element are explored, at different filling degrees. Finally, adopting the decay method, the damping ratio of elastic composite cylindrical rolling element, under different structural parameters and external loads, is calculated. According to the results, with the increase of filling degree, the natural frequencies of various orders of elastic composite cylindrical rolling element gradually declined. The damping ratio of rolling elements decreased, as the filling degree increased, while it could be changed by adjusting the structural dimensions of rolling elements. The analysis results of this study provide some theoretical reference for studies on the parameter optimization of rolling element structures, the vibration and noise reduction of elastic composite cylindrical roller bearings.

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Algorithms for Accurate and Fast Plotting of Contour Surfaces in 3D Using Hexahedral Elements

Cited by 2 publications

References 18 publications

Analysis on structural dynamic characteristics of integrated intelligent tower construction machine under effects of strong winds

Analysis on structural dynamic characteristics of integrated intelligent tower construction machine under effects of strong winds

Structures Dynamic Property Analysis of Elastic Composite Cylindrical Rolling Element

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