Nonlinear Analysis of Transmission Tower Structure by Three FEM Models

In this paper, three kinds of FEM models, i.e., the truss element model, the beam element model and the mixed beam-solid element model are utilized to simulate the full-scale field test of transmission tower. Based on Abaqus software, the geometric and material nonlinearity of the structure is considered. Comparing the numerical results with test data, it is found that the truss element model is no longer suitable and the mixed beam-solid element model is more accurate than the beam element model. Thus, using solid element to discrete the key nodes of the tower can greatly enhance the accuracy and reliability of the numerical prediction.

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Multi-Scale Analysis of the UHVDC Transmission Tower

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.680.383 ◽

2014 ◽

Vol 680 ◽

pp. 383-386

Author(s):

Chun Cheng Liu ◽

Wen Qiang Li ◽

Shang Yu Hou ◽

Zhao Wen He ◽

Fan Gao

Keyword(s):

Large Scale ◽

Element Model ◽

Beam Element ◽

Scale Model ◽

Scale Analysis ◽

Transmission Tower ◽

Gusset Plate ◽

Multi Scale ◽

Buckling Behavior ◽

Scale Models

In order to analyze the mechanical properties of UHVDC transmission tower joint accurately, a multi-scale finite element model of the transmission tower is established with the interface between solid element model and beam element model. The model is applied to the nonlinear analysis of a key joint in a test condition .The results show that the tower destruction is caused by buckling behavior of the cross bracing member and the multi-scale model can simulate the force state of gusset-plate and the connected members realistically, which is superior to traditional large scale models. The analysis coincides with the experiment well and provides references for the transmission tower design.

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Transmission Tower Collapse Analysis with Wind Load Based on LS-DYNA

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.838-841.370 ◽

2013 ◽

Vol 838-841 ◽

pp. 370-374

Author(s):

Liang Wang ◽

Wei Lian Qu ◽

Yan Fei Li ◽

Yi Fei Wang

Keyword(s):

Power Transmission ◽

Element Model ◽

Beam Element ◽

Economic Effects ◽

Transmission Tower ◽

Transmission Towers ◽

The Social ◽

Collapse Analysis ◽

The Finite Element Model ◽

Collapse Process

Large span transmission tower is the lifeline of electricity transmission，Its collapse destroyed will causes adverse to the social and economic effects，The mechanism of the power transmission tower collapsed caused people's attention.The analysis is based on LS-DYNA program，explicit beam161 beam element is adopted to establish the finite element model for transmission towers，Analyses the collapse process of transmission tower and its failure mode with downburst load.

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A higher-order shear deformable mixed beam element model for accurate analysis of functionally graded sandwich beams

Composite Structures ◽

10.1016/j.compstruct.2019.04.002 ◽

2019 ◽

Vol 221 ◽

pp. 110830 ◽

Cited By ~ 6

Author(s):

Wenxiong Li ◽

Haitao Ma ◽

Wei Gao

Keyword(s):

Element Model ◽

Beam Element ◽

Higher Order ◽

Functionally Graded ◽

Sandwich Beams ◽

Accurate Analysis ◽

Mixed Beam ◽

Shear Deformable

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Computational modeling of carbon nanofibers reinforced composites: A comparative study

Journal of Composite Materials ◽

10.1177/0021998320987893 ◽

2021 ◽

pp. 002199832098789

Author(s):

Pei-Liang Bian ◽

Hai Qing

Keyword(s):

Mechanical Properties ◽

Comparative Study ◽

Element Model ◽

Beam Element ◽

Reinforced Composites ◽

Multi Scale ◽

Solid Element ◽

Aspect Ratios ◽

Embedded Model ◽

Parametric Studies

The carbon nanotubes/nanofibers reinforced composites (CNRC) show great mechanical properties. There are several methods to simulate the mechanical properties of composites. Among the modeling techniques, embedded region (ER) shows the possibility for direct multi-scale simulation. A comparative study among beam element embedded model, solid element embedded model, as well as common solid element model is carried out. Programs developed in Matlab are utilized to generate geometric configurations, and finite element models are obtained from MSC.Patran with a script written in the Patran command language (PCL). Besides, a set of parametric studies are performed to investigate the influence of the aspect ratios of nanofibers and load cases on the mechanical properties of CNRC. The result shows that the ER technique is reliable to represent composites though neglecting the localized stress concentration, and beam element embedded models are trustworthy only for nanofibers with a large aspect ratio.

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Optimisation of Steel Transmission Tower Structure Using Firefly Algorithm

i-manager’s Journal on Structural Engineering ◽

10.26634/jste.6.2.13635 ◽

2017 ◽

Vol 6 (2) ◽

pp. 9

Author(s):

REDDY A. ANVESH ◽

KUMAR CH. NAVEEN ◽

REDDY K. AVINASH ◽

CHANDRASEKHAR K.N.V. ◽

◽

...

Keyword(s):

Firefly Algorithm ◽

Transmission Tower ◽

Tower Structure

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Finite element bending analysis of symmetric and non-symmetric functionally graded sandwich beams using a novel parabolic shear deformation theory

Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications ◽

10.1177/14644207211005096 ◽

2021 ◽

pp. 146442072110050

Author(s):

Mohamed-Ouejdi Belarbi ◽

Abdelhak Khechai ◽

Aicha Bessaim ◽

Mohammed-Sid-Ahmed Houari ◽

Aman Garg ◽

...

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Shear Deformation ◽

Transverse Shear ◽

Deformation Theory ◽

Shear Deformation Theory ◽

Element Model ◽

Beam Element ◽

Functionally Graded ◽

Sandwich Beams

In this paper, the bending behavior of functionally graded single-layered, symmetric and non-symmetric sandwich beams is investigated according to a new higher order shear deformation theory. Based on this theory, a novel parabolic shear deformation function is developed and applied to investigate the bending response of sandwich beams with homogeneous hardcore and softcore. The present theory provides an accurate parabolic distribution of transverse shear stress across the thickness and satisfies the zero traction boundary conditions on the top and bottom surfaces of the functionally graded sandwich beam without using any shear correction factors. The governing equations derived herein are solved by employing the finite element method using a two-node beam element, developed for this purpose. The material properties of functionally graded sandwich beams are graded through the thickness according to the power-law distribution. The predictive capability of the proposed finite element model is demonstrated through illustrative examples. Four types of beam support, i.e. simply-simply, clamped-free, clamped–clamped, and clamped-simply, are used to study how the beam deflection and both axial and transverse shear stresses are affected by the variation of volume fraction index and beam length-to-height ratio. Results of the numerical analysis have been reported and compared with those available in the open literature to evaluate the accuracy and robustness of the proposed finite element model. The comparisons with other higher order shear deformation theories verify that the proposed beam element is accurate, presents fast rate of convergence to the reference results and it is also valid for both thin and thick functionally graded sandwich beams. Further, some new results are reported in the current study, which will serve as a benchmark for future research.

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Dynamics Analysis of Industrial Sewing Machine Frame Based on FEA and Modal Experiment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.419.122 ◽

2013 ◽

Vol 419 ◽

pp. 122-126

Author(s):

Li Zhang ◽

Chen Kai ◽

Xue Jiao Wang

Keyword(s):

3D Model ◽

Element Model ◽

Impact Testing ◽

Testing System ◽

Dynamics Analysis ◽

Sewing Machine ◽

Good Consistency ◽

The Finite Element Model ◽

Experiment Analysis ◽

Abaqus Software

The industrial sewing machine frame is one of the most important components of the sewing machine system, so studying its dynamic characteristics is particularly important. In this paper, based on the 3D model, the theory modal analysis of the industrial sewing machine is conducted with ABAQUS software and the modal experiment analysis is carried out through LMS(Lab Impact Testing system). The experimental results are in good consistency, which shows that the finite element model built in the paper is reasonable. This paper provides theoretical reference for vibration and noise reduction of the industrial sewing machine.

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The Neural Network Appraisal Method of Transmission Tower Structure Damage by Using Time Domain Data

2009 International Conference on Energy and Environment Technology ◽

10.1109/iceet.2009.322 ◽

2009 ◽

Cited By ~ 1

Author(s):

He Zhu

Keyword(s):

Neural Network ◽

Time Domain ◽

Transmission Tower ◽

Structure Damage ◽

Time Domain Data ◽

The Neural Network ◽

Tower Structure ◽

Appraisal Method

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Contrastive Study on Finite Element Models of High-Strength Pipelines Crossing Active Faults

Materials Science Forum ◽

10.4028/www.scientific.net/msf.850.957 ◽

2016 ◽

Vol 850 ◽

pp. 957-964

Author(s):

Wei Zheng ◽

Hong Zhang ◽

Xiao Ben Liu ◽

Le Cai Liang ◽

Yin Shan Han

Keyword(s):

Finite Element ◽

Design Method ◽

Active Faults ◽

Shell Element ◽

High Strength ◽

Element Model ◽

Beam Element ◽

Finite Element Models ◽

Fixed Boundary ◽

Equivalent Boundary

There is a potential for major damage to the pipelines crossing faults, therefore the strain-based design method is essential for the design of buried pipelines. Finite element models based on soil springs which are able to accurately predict pipelines’ responses to such faulting are recommended by some international guidelines. In this paper, a comparative analysis was carried out among four widely used models (beam element model; shell element model with fixed boundary; shell element model with beam coupled; shell element model with equivalent boundary) in two aspects: differences of results and the efficiency of calculation. The results show that the maximum and minimum strains of models coincided with each other under allowable strain and the calculation efficiency of beam element model was the highest. Besides, the shell element model with beam coupled or equivalent boundary provided the reasonable results and the calculation efficiency of them were higher than the one with fixed boundary. In addition, shell element model with beam coupled had a broader applicability.

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