scholarly journals Comparative Analysis of Three Typical Cantilever Scaffold Supporting Systems

2021 ◽  
Author(s):  
Dajiang Geng ◽  
Ning Dai ◽  
De Zhang ◽  
Xuesheng Jin ◽  
Minjian Long
Keyword(s):  
Finite Element Method ◽  
Internal Force ◽  
Social Benefits ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Construction Period ◽  
Distribution Uniformity ◽  
Force Mechanism ◽  
Main Girder ◽  
Selection Of

Abstract In order to effectively guide the selection of scaffold in designing the cantilever scaffold, comprehensive analyses of three typical scaffold supporting systems (including fully cantilever, bottom-supporting cantilever and pull-up cantilever) are carried out. The calculation formulas of the internal force for the three scaffold supporting systems are proposed based on the theoretical analysis, which are effectively verified by the finite element method (FEM). In addition, the force mechanism and benefits of the three scaffold supporting systems are compared and analyzed combined with actual engineering. The results indicate that there is high calculating accuracy for the proposed internal force and deflection calculation formulas about the scaffold supporting systems. According to the distribution uniformity of the internal force and controlling of the deformation of the main girder, the bottom-supporting cantilever system is undoubtedly the best choice. While the pull-up cantilever supporting system is the best choice when considering the aspects of cost, construction period and social benefits, which ought to be popularized in engineering practice.

scholarly journals Grouping and analysis of chair quality and their basic elements

2009 ◽  
pp. 147-154 ◽  
Author(s):  
Dusan Skakic ◽  
Igor Dzincic
Keyword(s):  
Finite Element Method ◽  
Decision Making ◽  
Finite Element ◽  
Numerical Optimization ◽  
Optimal Solution ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Wide Range ◽  
Decision Making Processes ◽  
Selection Of

Both the scientific experience and the engineering practice indicate that the decision making processes in the course of solving complex designing problems require an analysis of a great number of different construction variants. These types of decision-making processes are time consuming and do not always result in the selection of an optimal solution. That is why the methods of numerical optimization are applied in a wide range of technical sciences to assist in the selection of the best solution. The first step in solving the problem by using the Finite element method is to determine the type of chair earmarked for modeling, and to determine the dimensions of the chair elements.

scholarly journals Special Issue “Applications of Finite Element Modeling for Mechanical and Mechatronic Systems”

2021 ◽  
Vol 11 (11) ◽  
pp. 5170
Author(s):  
Marek Krawczuk ◽  
Magdalena Palacz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Modeling ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Special Issue ◽  
Mechatronic Systems ◽  
Modeling And Analysis ◽  
Modern Engineering ◽  
Concise Description

Modern engineering practice requires advanced numerical modeling because, among other things, it reduces the costs associated with prototyping or predicting the occurrence of potentially dangerous situations during operation in certain defined conditions. Different methods have so far been used to implement the real structure into the numerical version. The most popular have been variations of the finite element method (FEM). The aim of this Special Issue has been to familiarize the reader with the latest applications of the FEM for the modeling and analysis of diverse mechanical problems. Authors are encouraged to provide a concise description of the specific application or a potential application of the Special Issue.

Research on Measure-Control Technology of Large-Span Suspendome during Construction Period

2011 ◽  
Vol 105-107 ◽  
pp. 2010-2014
Author(s):  
Yong Quan Wang ◽  
Zheng Xing Guo ◽  
Bin Luo
Keyword(s):  
Steel Structure ◽  
Internal Force ◽  
Test Methods ◽  
Engineering Practice ◽  
Control Methods ◽  
Construction Process ◽  
Construction Period ◽  
Large Span ◽  
Axial Forces ◽  
Construction Mechanics

In order to ensure the prestress establishment of large-span suspendome, research on the measure-control methods for large-span suspendome during prestress construction process is performed, by summarizing the existing measure and test methods. According to engineering practice at present, the paper classifies the measure-control content of large-span suspendome during prestress construction period into two parts: internal force of cable-strut and deformation of steel structure. Taking practical project of a gymnasium as an example, the axial forces of hoop cables, radial steel tie rods and struts are measured, and also the verticality of struts. The test results are analyzed, and compared with the calculated value. The results show that, the internal forces of cable-strut and verticality of struts can both meet the design requirement, by mechanical analyzing and precise monitoring of the whole prestress construction process. The conclusion is that, before the prestress construction of large-span suspendome, construction mechanics analysis must be carried out in details to determine the control content and its target value, right measure-control methods are chosen, and then the effective establishment of prestress can be achieved.

Parameter Analysis for the Beam-to-Column Minor Axis Connections of Steel Frames

2013 ◽  
Vol 639-640 ◽  
pp. 155-159
Author(s):  
Xi Bing Hu ◽  
Da Chen ◽  
Guo Jing He
Keyword(s):  
Steel Frames ◽  
Internal Force ◽  
Minor Axis ◽  
Parameter Analysis ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Initial Stiffness ◽  
Traditional Assumption ◽  
The Relationship ◽  
Force Displacement

Base on the traditional assumption, beam-to-column minor axis connections are usually considered either as perfectly rigid or as nominally pinned. In fact, many researches show that beam-to-column minor axis connections are often semi-rigid, and their performance greatly effects the internal force, displacement, and ultimate bearing capacity of the steel frames, which cannot be neglected. Welded joint, one type of beam-to-column minor axis connections, which is widely used in the engineering practice is researched. The finite element method was used to analysis the relationship between the parameter variation and the rotational initial stiffness of the connections. The results can be used as a reference to the designs of steel frames.

Mixed Method to Calculate the Sluice Plate on Complicated Foundation

2011 ◽  
Vol 138-139 ◽  
pp. 399-403
Author(s):  
Chun Liang Dong ◽  
Xiao Yu Lu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interaction Effect ◽  
Mixed Method ◽  
Analytical Method ◽  
Internal Force ◽  
The Finite Element Method ◽  
Principle Of Superposition ◽  
Element Method

In order to calculate the interaction between complicated foundation and sluice plate conveniently, an effective method was proposed to solve this problem in the paper. This method regarded the sluice plate and foundation as two substructures, which are connected with chain-bars. The unit displacement of the sluice plate and the settlement of the foundation surface are calculated by the analytical method and the finite element method, respectively. And the counter-force of the foundation is calculated by the mixed method. At the same time, the displacement and internal force are calculated by the principle of superposition. All the results reflect the interaction effect between the sluice plate and foundation fairly good.

Modeling and Simulation of Vibration-Assisted Extrusion Tapping of Internal Thread with Finite Element Method (FEM)

2012 ◽  
Vol 498 ◽  
pp. 183-188 ◽  
Author(s):  
Yong Yi Li ◽  
Sheng Dun Zhao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Material Flow ◽  
Internal Thread ◽  
The Finite Element Method ◽  
Forming Process ◽  
Effect Mechanism ◽  
Vibration Parameters ◽  
Selection Of ◽  
Element Method

This paper firstly introduces the principle and characteristic of traditional extrusion tapping of internal thread, elaborates the material flow law during tapping process. Then puts forward a novel process of vibration-assisted extrusion tapping of internal thread, explains the effect mechanism of vibration during extrusion tapping of internal thread. Finally, with the finite element method (FEM), the simplified model of extrusion tapping are built, and the simulation of thread forming process of traditional extrusion tapping of internal thread are conducted, furthermore, the characteristic and influencing law of different vibration parameters (include vibration frequency, amplitude and direction) of vibration-assisted extrusion tapping of internal thread are studied, and some practical results are obtained. The simulation results show that applying vibration to extrusion tapping of internal thread can reduce tapping torque and improve thread forming quality, the reasonable selection of vibration parameters are very crucial to this novel process.

A Material Selection Method Based on Finite Element Method

2014 ◽  
Vol 887-888 ◽  
pp. 1013-1016
Author(s):  
Sheng Bin Wu ◽  
Xiao Bao Liu
Keyword(s):  
Mathematical Model ◽  
Finite Element Method ◽  
Finite Element ◽  
Material Selection ◽  
Selection Method ◽  
Structure Design ◽  
The Finite Element Method ◽  
The Mathematical Model ◽  
Selection Of ◽  
Element Method

A new method for material selection in structure design based on the theory of the finite element method was presented. The method made material selection and structure design working at the same time. The mathematical model was established based on the finite element method. Finally, the material selection of an excavator's boom was verified, the results show that the proposed method is effective and feasible.

A Comparison between the Matrix Displacement Method and the Finite Element Method in Solving Frame Structure with SM Solver Software

2014 ◽  
Vol 580-583 ◽  
pp. 3042-3045
Author(s):  
Li Juan Cheng ◽  
Xin Chi Yan
Keyword(s):  
Finite Element Method ◽  
Exact Solution ◽  
Finite Element ◽  
Internal Force ◽  
Frame Structure ◽  
The Finite Element Method ◽  
Displacement Method ◽  
Rigid Frame ◽  
The Matrix ◽  
Element Method

Using matrix displacement method and the finite element method to calculate the internal force of the same frame, and then comparing the results. Meanwhile, due to the theory that SM Solver can calculate the exact solution of rigid frame structure forces, we use it to support our experiment. Finally, we succeed in calculating and proving that Matrix displacement method and the finite element method have the same result in solving the rigid frame structure forces.

Research on the Differences of Retaining Wall between in Widening Highway and in the New Highway

2014 ◽  
Vol 587-589 ◽  
pp. 1301-1304
Author(s):  
Zhen Yang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Design Method ◽  
Retaining Wall ◽  
Engineering Practice ◽  
The Finite Element Method ◽  
Modeling And Analysis ◽  
Earth Pressures ◽  
Element Method

At present, the widening highway retaining wall is often used in engineering practice, but compare to the new highway retaining wall, there is not any highlight differences on design method to the widening highway retaining wall. The paper lays on a widening highway retaining wall in an engineer, based on the analysis of the differences between the widening highway retaining wall and the new highway retaining wall, using the finite element method for modeling and analysis of the widening highway retaining wall and the new highway retaining wall, then conclude that the soil displacements and earth pressures between the two models are significantly different, finally point out the considerations in design.

Studies on the Influence of the Frame Structure’s Deformation of the Automatic Hydraulic Tile Press on Energy Consumption

2011 ◽  
Vol 103 ◽  
pp. 41-45
Author(s):  
Zhi Cheng Huang ◽  
Ze Lun Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Consumption ◽  
The Finite Element Method ◽  
Future Design ◽  
Selection Of ◽  
Element Method

The influence of the frame structure’s deformation of the automatic hydraulic tile press on energy consumption has long been neglected. In this paper, a case study in two common beam-column types hydraulic automatic tile press, get the deformations of the columns produced by the tensile by using the finite element method, and then calculate their energy consumption due to deformations. Through analysis and comparison, provide a reference for future design and selection of the hydraulic automatic tile press.

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