Three-dimensional analysis of anchored wall with concrete bearing pads

2020 ◽  
Vol 18 (6) ◽  
pp. 1469-1486
Author(s):  
Hamed Arefizadeh ◽  
Hadi Shahir
Keyword(s):  
Design Methodology ◽  
Three Dimensional ◽  
Bending Moments ◽  
Dimensional Model ◽  
Discrete Elements ◽  
Three Dimensional Model ◽  
Content Type ◽  
Finite Element Software ◽  
Internal Forces ◽  
Soldier Pile

Purpose Anchorage with concrete bearing pad is commonly used in Iran for stabilization of excavations because of the ease of construction, less costs and less time consumption than the soldier pile method. In this method, a wall facing which includes the concrete bearing pads at the location of the anchors and a shotcrete layer between the bearing pads is constructed parallel to the excavation operation similar to the nailing method. Design/methodology/approach In this paper, using the finite element software Abaqus, a three-dimensional model of the above-mentioned type of wall is constructed, and the effect of spacing and size of bearing pads on the wall behavior is discussed. Findings According to the obtained results, the size of the concrete bearing pads has little effect on wall deformations, but the internal forces and bending moments developed in the shotcrete layer between the bearing pads are greatly influenced by the bearing pads dimensions and spacing. Originality/value Owing to the discrete elements of the wall facing, the behavior of this system is completely three-dimensional.

Study on the Complete Equivalent Initial Imperfection of High Formwork Supporting Frame with Pulley-Clip Style

2011 ◽  
Vol 368-373 ◽  
pp. 3052-3056
Author(s):  
Wei Jun Yang ◽  
Yong Da Yang
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Initial Imperfection ◽  
Influential Factors ◽  
Horizontal Load ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Supporting Frame

New full hall scaffolds with pulley-clip style formwork support system is adopted in the concert hall of Changsha. This paper presents the concept of the complete equivalent initial imperfection according to the characteristics of too many influential factors on the high formwork supporting frame，then makes the complete equivalent initial imperfectione equivalent to assumed equivalent horizontal load in order to ensure the safety of the frame. At the same time, it gets a three-dimensional model by the general finite element software ANSYS 10.0. Based on the results of experiment and finite element analysis, it gets the recommended value of assumed equivalent horizontal load. The study on the high formwork supporting frame with pulley-clip style provides some reference for other similar projects.

scholarly journals Driving Direction Displacement Analysis of Asphalt Pavement under Fluctuating Load

2020 ◽  
Vol 165 ◽  
pp. 03043
Author(s):  
Gao Jianhong ◽  
Xu Youjun ◽  
Yang Shengchun
Keyword(s):  
Dynamic Load ◽  
Transient Analysis ◽  
Asphalt Pavement ◽  
Three Dimensional ◽  
Time History ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Finite Element Software ◽  
Half Wave ◽  
Peak Value

The finite element software ANSYS is used to build the asphalt pavement three-dimensional model and to carry through transient analysis. The z-direction displacement time history curves of asphalt pavement under half wave sine load are obtained. The curves reveal that the dynamic load influence on pavement structure Z-direction displacement is complex; The z-direction displacement always reaches its peak value when the load reaches this point, and it decreases rapidly to zero after the load leaves; The Z-direction displacement influence of dynamic load increases with the increase of depth. These conclusions can provide a reference for asphalt pavement under half wave sinusoidal dynamic load.

Influence of airflow dynamics on vortices in the human nasal cavity

2019 ◽  
Vol 36 (9) ◽  
pp. 3164-3179
Author(s):  
Punjan Dohare ◽  
Amol P. Bhondekar ◽  
Anupma Sharma ◽  
C. Ghanshyam
Keyword(s):  
Numerical Simulations ◽  
Nasal Cavity ◽  
Three Dimensional ◽  
Nasal Airflow ◽  
Nasal Valve ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Flow Rates ◽  
Content Type ◽  
Human Nose

Purpose The purpose of this paper is to understand the effect of airflow dynamics on vortices for different flow rates using the human nose three-dimensional model. Design/methodology/approach Olfaction originates with air particles travelling from an external environment to the upper segment of the human nose. This phenomenon is generally understood by using the nasal airflow dynamics, which enhances the olfaction by creating the vortices in the human nose. An anatomical three-dimensional model of the human nasal cavity from computed tomography (CT) scan images using the MIMICS software (Materialise, USA) was developed in this study. Grid independence test was performed through volume flow rate, pressure drop from nostrils and septum and average velocity near the nasal valve region using a four computational mesh model. Computational fluid dynamics (CFD) was used to examine the flow pattern and influence of airflow dynamics on vortices in the nasal cavity. Numerical simulations were conducted for the flow rates of 7.5, 10, 15 and 20 L/min using numerical finite volume methods. Findings At coronal cross-sections, dissimilar nasal airflow patterns were observed for 7.5, 10, 15 and 20 L/min rate of fluid flow in the human nasal cavity. Vortices that are found at the boundaries with minimum velocity creates deceleration zone in the nose vestibule region, which is accompanied by flow segregation. Maximum vortices were observed in the nasal valve region and the posterior end of the turbinate region, which involves mixing and recirculation and is responsible for enhancing the smelling process. Practical implications The proposed analysis is applicable to design the sensor chamber for electronic noses. Originality/value In this paper, the influence of airflow dynamics on vortices in the human nasal cavity is discussed through numerical simulations.

Stakeholder power and corporate social performance

2014 ◽  
Vol 14 (3) ◽  
pp. 363-381 ◽  
Author(s):  
Béchir Ben Lahouel ◽  
Jean-Marie Peretti ◽  
David Autissier
Keyword(s):  
Stakeholder Theory ◽  
Corporate Social Performance ◽  
Social Performance ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Content Type ◽  
Strategic Posture ◽  
Corporate Social ◽  
The Relationship

Purpose – This paper aims to explore the power of one of the primary organizational stakeholders (shareholders) in the development of a corporate social performance (CSP) score. Few research works in the CSP empirical literature have studied the relationship between stakeholder power and CSP. Design/methodology/approach – Stakeholder theory is used as a theoretical framework to explain how shareholder voting power can influence the CSP level of French publicly listed companies. Stakeholder theory is tested through the operationalization of Ullmann’s (1985) three-dimensional model. Hypotheses related to shareholder voting power, strategic posture and financial performance are formulated through a literature review. A Data Envelopment Analysis approach was presented as a strong tool to measure CSP level. Multiple linear regressions were undertaken to test the hypotheses in a sample of 129 French companies between 2006 and 2007. Findings – The results indicate that companies with dispersed ownership and high proportion of institutional shareholders record a high score of CSP. Strategic posture measured by the implementation of environmental certification standard was positively and significantly related to CSP. Financial performance does not affect significantly the level of CSP. Originality/value – This paper is the first to empirically analyse the relationship between Ullmann’s three-dimensional model and CSP level in the French context. It offers to managers a better understanding of the power that certain stakeholders can use to acquire satisfaction.

Fatigue Reliability Analysis of Connecting Rod Made of Powder and Steel Forging Material

2013 ◽  
Vol 815 ◽  
pp. 268-272
Author(s):  
Jian Ye ◽  
Wei Gao ◽  
Chun Wu Liu ◽  
Zhao Qiang Zeng
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Technological Properties ◽  
Fatigue Reliability ◽  
Dimensional Model ◽  
Connecting Rod ◽  
Three Dimensional Model ◽  
Software Safety ◽  
Finite Element Software ◽  
Steel Forging

A three dimensional model of connecting rod has been made and drawn meshes. The load and boundary conditions were determined and the stress was calculated with finite element software. Safety of connecting rod was discussed using the safe coefficient. The rod made of powder forging is better in mechanical and technological properties.

In Rail Quenching Unit, Numerical Simulation Study of the Evolution Rule about Tissue and Stress of Rail Head in Quenching Cooling

2014 ◽  
Vol 686 ◽  
pp. 582-586
Author(s):  
Lin Chen ◽  
Zhi Gang Zhang ◽  
Yu Yan Liu
Keyword(s):  
Theoretical Basis ◽  
Three Dimensional ◽  
Dimensional Model ◽  
Cooling Process ◽  
Three Dimensional Model ◽  
Rail Head ◽  
Finite Element Software ◽  
Quenching Process ◽  
Deform 3D ◽  
Residual Heat

In this paper, based on electric quenching production process in rail and beam factory of Baotou steel, using the finite element software DEFORM-3D, with 60kg/m U75V rail as the prototype, established a three-dimensional model of rail residual heat quenching to simulate and calculate evolution law of tissues and stress on rail head in quenching cooling process in quenching unit, and provides a theoretical basis for finding reasonable optimal cooling rate of rail head in the rail online residual heat quenching process.

Contribution of the three-dimensional model to the reliability allocation of multiphase systems

2019 ◽  
Vol 36 (7) ◽  
pp. 1038-1052
Author(s):  
Saadia Saadi ◽  
Mébarek Djebabra ◽  
Ounsa Roudies ◽  
Wafa Boulagouas
Keyword(s):  
Process Analysis ◽  
Functional Dependence ◽  
Three Dimensional ◽  
Implementation Process ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Reliability Allocation ◽  
Content Type ◽  
Multiphase Systems ◽  
New Formulation

Purpose The purpose of this paper is to deal with the allocation requirements of the dependability of the multiphase systems. Design/methodology/approach It consists of a proposal for a combined methodology based on the simultaneous use of decomposition systems and reliability allocation method. Findings In the developed methodology, the authors use the principles of risk assessment and propose a new formulation of weight allowance with reference to the structural‒functional dependence. Practical implications The suggested methodology provides invaluable help to implementation process analysis. Originality/value The adopted allocation approach is based on the use of a three-dimensional model: temporal, structural and functional decomposition of systems.

Like “My Wife and Mother-in-Law”: Mikmak and the need to assign a three-dimensional definition for groups of children-consumers

2016 ◽  
Vol 17 (4) ◽  
pp. 350-362
Author(s):  
David Levin
Keyword(s):  
Design Methodology ◽  
Three Dimensional ◽  
Computer Game ◽  
Semiotic Analysis ◽  
Optical Illusion ◽  
Three Dimensional Model ◽  
Content Type ◽  
Group Members ◽  
Combination Of Methods

Purpose This paper aims to set out to demonstrate the need for an integrated model that was titled, after the famous optical illusion (Hill, 1915), “Like My Wife and Mother-in-Law”, addressing three prevalent definitions of consumers’ communities: subculture, neo-tribe and brand community. It shows how it is only the use made of insights gleaned from all three that can faithfully describe the world of local and global meanings found in a computer game-based consumer community of children. Design/methodology/approach The analysis relies on a semiotic analysis of this computer game’s contents as well as on information obtained by a way of ethnography performed among group members, 9-11-year-olds. The combination of methods proves appropriate in tackling this model’s complexity, allowing to describe the interaction offered by the game, and the type of conduct attending it, online as well as offline. Findings Like the optical illusion where one can see two images in a single picture, this analysis shows that the participant children demonstrate complex, conflictual attitudes to the website’s effort to market subscriptions and products. Despite the game’s high popularity among children, a tension was identified between developers’ intentions and the game’s nature in practice. Originality/value Previous works seek to describe the experience of a given consumer community by opting for one of the three definitions. Unlike this approach, the author intends to show how the three-dimensional model offers a richer view of the consumers’ experience. Communicating this view may also prevent marketing misguided approaches when targeting consumer communities, based on a single-dimensional characterization of audiences.

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