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Article
Publication date: 26 September 2023

Ruqing Bai, Hakim Naceur, Jinglei Zhao, Jin Yi, Jie Ma, Huayan Pu and Jun Luo

In this paper, the standard Peridynamic Timoshenko beam model accounting for the shear deformation is chosen to describe the thick beam kinematics. Unfortunately, when applied to…

133

Abstract

Purpose

In this paper, the standard Peridynamic Timoshenko beam model accounting for the shear deformation is chosen to describe the thick beam kinematics. Unfortunately, when applied to very thin beam structures, the standard Peridynamics (PD) encounters the shear locking phenomenon, leading to incorrect solutions.

Design/methodology/approach

PD differs from classical continuum mechanics and other nonlocal theories that do not involve spatial derivatives of the displacement field. PD is based on the integral equation instead of differential equations to handle discontinuities and other singularities.

Findings

The shear locking can be successfully alleviated using the developed selective integration method. In particular, this technique has been implemented in the standard PD, which allows an accurate result for a wide range of slenderness from very thin to thick (10 < L/t < 103) structures. It can also accelerate the computational time for particular dynamic problems using fewer neighboring integration particles. Several numerical examples are solved to demonstrate the effectiveness of the proposed method for modeling beam structures.

Originality/value

The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam available in the literature, especially for very thin structures. A new alternative for the alleviation of shear locking in the Peridynamic Timoshenko beam, using selective integration. Hence the developed Peridynamic Timoshenko beam model is effective for thin and thick structures. A new peridynamic formulation for the low-velocity impact beam models is presented and validated.

Highlights

  1. The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam proposed in the literature, especially for very thin structures.

  2. The developed Peridynamic Timoshenko beam model based on selective integration is effective for thin and thick structures.

  3. A new peridynamic formulation for the low-velocity impact beam models is presented and validated.

The paper highlights the severe shear locking phenomenon in the Peridynamic Timoshenko beam proposed in the literature, especially for very thin structures.

The developed Peridynamic Timoshenko beam model based on selective integration is effective for thin and thick structures.

A new peridynamic formulation for the low-velocity impact beam models is presented and validated.

Details

Engineering Computations, vol. 40 no. 9/10
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 2 February 2021

Waseem Arif, Hakim Naceur, Sajjad Miran, Nicolas Leconte and Eric Markiewicz

The purpose of this study is to develop an elasto-plastic multi-material shell model by which finite element analysis of laser welded joints is carried out at the interface of the…

185

Abstract

Purpose

The purpose of this study is to develop an elasto-plastic multi-material shell model by which finite element analysis of laser welded joints is carried out at the interface of the heat-affected zone and base material.

Design/methodology/approach

The multi-material shell model is implemented on the simple cantilever and double cantilever welded plates to examine the efficiency of the developed model.

Findings

By reducing the computational time approximately 20 times with the developed model, the results obtained in the form of von Mises stress and equivalent plastic strain are found in good agreement as compared with the reference solid model.

Originality/value

The accurate and fast prediction of the stresses and strains in the laser welded joints, and the developed multi-material model is helpful to simulate complex industrial welded structures.

Details

Engineering Computations, vol. 38 no. 6
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 5 May 2015

Jun Lin, Hakim Naceur, Daniel Coutellier and Abdel Laksimi

– The purpose of this paper is to present an efficient smoothed particle hydrodynamics (SPH) method particularly adapted for the geometrically nonlinear analysis of structures.

516

Abstract

Purpose

The purpose of this paper is to present an efficient smoothed particle hydrodynamics (SPH) method particularly adapted for the geometrically nonlinear analysis of structures.

Design/methodology/approach

In order to resolve the inconsistency phenomenon which systematically occurs in the standard SPH method at the domain’s boundaries of the studied structure, the classical kernel function and its spatial derivatives were modified by the use of Taylor series expansion. The well-known tensile instabilities inherent to the Eulerian SPH formulation were attenuated by the use of the Total Lagrangian Formulation (TLF).

Findings

In order to demonstrate the effectiveness of the present improved SPH method, several numerical applications involving geometrically nonlinear behaviors were carried out using the explicit dynamics scheme for the time integration of the PDEs. Comparisons of the obtained results using the present SPH model with analytical reference solutions and with those obtained using ABAQUS finite element (FE) commercial software, show its good accuracy and robustness.

Practical implications

An additional application including a multilayered composite structure and involving buckling and delamination was investigated using the present improved SPH model and the results are compared to the FE results, they confirmed both the efficiency and the accuracy of the proposed method.

Originality/value

An efficient 2D-continuum SPH model for the geometrically nonlinear analysis of thin and thick structures is proposed. Contrarily to the classical SPH approaches, here the constitutive material relations are used to link naturally the stresses and strains. The Total Lagrangian approach is investigated to alleviate the tensile instabilities problem, allowing at the same time to avoid the updating procedure of the neighboring particles search and therefore reducing CPU usage. The proposed approach is valid for isotropic and multilayered composites structures undergoing large transformations. CPU time savings and better results with the new 2D-continuum SPH formulation compared to the classical continuum SPH. The explicit dynamic scheme was used for time integration allowing a fast resolution algorithm even for highly nonlinear problems.

Details

Engineering Computations, vol. 32 no. 3
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 2 February 2015

Hakim Ben Othman and Anas Kossentini

The purpose of this paper is to explore the underlying assumptions of economic development theories that may support or constrain accounting standard-setting strategies related to…

3915

Abstract

Purpose

The purpose of this paper is to explore the underlying assumptions of economic development theories that may support or constrain accounting standard-setting strategies related to IFRS adoption and their potential effects on emerging stock markets (ESMs) development. The authors investigate the country-level association between the extent of IFRS adoption and ESMs development.

Design/methodology/approach

The empirical analysis is based on a dynamic panel model using the generalized method of moments for 50 emerging economies over a period spanning from 2001 to 2007.

Findings

The authors find that a higher level of IFRS adoption affects positively and significantly stock market development (SMD). More specifically, full IFRS adoption for listed firms is substantially associated with SMD. However, the authors find that partial adoption of IFRS might be not only inappropriate and irrelevant, but also significantly harmful to ESMs development. In addition, it is shown that local GAAPs shaped on the basis of IFRS with major changes are at the origin of such counter-intuitive relationships.

Practical implications

This paper has some policy implications for developing countries. In order to enhance ESMs development, it is important to improve financial information quality through full adoption of IFRS. In a global economic system, it is essential to standard-setters as well as market regulators in non-adopter developing countries to require full IFRS adoption.

Originality/value

This paper extends previous work of Larson and Kenny (1996) in establishing relationships between standard-setting strategies faced to IFRS and theories of economic development. The authors investigate the effects of these standard-setting strategies on SMD using a sample of 50 emerging economies.

Details

Journal of Accounting in Emerging Economies, vol. 5 no. 1
Type: Research Article
ISSN: 2042-1168

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Article
Publication date: 20 October 2022

Mosab I. Tabash, Suhaib Anagreh and Opeoluwa Adeniyi Adeosun

This paper aims to investigate the effects of financial access, financial depth, financial efficiency and financial stability pillars on income inequality and poverty among a…

282

Abstract

Purpose

This paper aims to investigate the effects of financial access, financial depth, financial efficiency and financial stability pillars on income inequality and poverty among a panel of sub-Saharan African (SSA) countries.

Design/methodology/approach

This paper captures cross-sectional dependence among the income groups through the dynamic common correlated effect approach for a data set of 28 selected SSA countries from 2000 to 2017.

Findings

This study reveals that the financial development pillars exert positive and significant impacts on income inequality across the income groups. The results show that the effects of the financial development metrics on poverty are different across the income groups. The results also indicate that the pillars improve poverty reduction for low- and lower-middle-income countries. However, there is a minimal effect on poverty reduction in upper-middle-income countries. The differences among these income categories suggest the need for policymakers to account for income levels when prescribing policies that could engender financial development and poverty reduction in the region.

Originality/value

This paper examines the effects of financial development on both income inequality and poverty by using the newly developed World Bank financial development strategic metrics. It captures cross-sectional dependence in the full sample of selected SSA countries and their income categories.

Details

International Journal of Organizational Analysis, vol. 31 no. 7
Type: Research Article
ISSN: 1934-8835

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Article
Publication date: 27 July 2012

Daniel Zeghal and Karim Mhedhbi

The purpose of this paper is to analyze the consequences of using international accounting standards (IAS/IFRS) for the development of capital markets located in developing…

2400

Abstract

Purpose

The purpose of this paper is to analyze the consequences of using international accounting standards (IAS/IFRS) for the development of capital markets located in developing countries (emerging capital markets).

Design/methodology/approach

The authors conduct an empirical study using a sample of 38 developing countries with capital markets, starting by comparing the means of the different measures studied before and after the use of IAS/IFRS. A multivariate statistical analysis is conducted based on the estimation of a model of panel data with fixed effects.

Findings

The results show that the development of the emerging capital markets is positively and significantly associated with the use of international accounting standards.

Practical implications

The paper's findings are of interest to several different parties, primarily the national accounting standardization body, the IASB, many international organizations and international investors.

Originality/value

The paper describes an empirical study, conducted on a group of developing countries, which provides a better understanding of the potential consequences of the use of IASB standards. The paper is also a meaningful contribution to the international accounting literature, as it examines an interesting subject that has not yet been investigated.

Details

International Journal of Accounting & Information Management, vol. 20 no. 3
Type: Research Article
ISSN: 1834-7649

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Article
Publication date: 27 November 2019

Rafik Harkati, Syed Musa Alhabshi and Salina Kassim

The purpose of this paper is to investigate the influence of economic freedom and six relevant subcomponents of it on the risk-taking behavior of banks in the Malaysian dual…

733

Abstract

Purpose

The purpose of this paper is to investigate the influence of economic freedom and six relevant subcomponents of it on the risk-taking behavior of banks in the Malaysian dual banking system. It also aims to make a comparative analysis between Islamic and conventional banks operating in this dual banking sector. Moreover, the study is an effort to enrich the existing literature by presenting empirical evidence on the argument that the risk-taking behavior of the two types of banks is indistinguishable given that they operate in the same regulatory environment.

Design/methodology/approach

Secondary data of all banks operating in the Malaysian banking sector are collected from FitchConnect database, in addition to the economic freedom index from Foundation Heritage for the period 2011–2017. Generalized least squares technique is employed to estimate the influence of economic freedom and the six relevant subcomponents of it on the risk-taking behavior of banks.

Findings

The level of economic freedom influenced risk-taking behavior within the banking sector as a whole, conventional and Islamic banking sectors negatively during the study period (2011–2017). Risk-taking behavior of conventional and Islamic banks is similar. However, conventional banks turn to be less influenced by economic freedom level as compared to Islamic banks.

Practical implications

The government and regulators may benefit from the results by rethinking and setting the best economic freedom index that better serves the stability of the banking system, and lessens banks’ risk-taking inclination.

Originality/value

To the present time, this paper is thought to be of a significant contribution. Given the argument that Islamic and conventional banks behave in the same way. This is one of the first attempts to address this issue in light of the influence of economic freedom and six subcomponents of it on the risk-taking behavior of banks operating in a dual banking system.

Details

Review of Behavioral Finance, vol. 12 no. 4
Type: Research Article
ISSN: 1940-5979

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Article
Publication date: 4 November 2020

Zulkifli Rangkuti

This paper aims to examine the effects of Tier-1 capital toward risk management and profitability on the performance of Indonesian Commercial Banks.

1108

Abstract

Purpose

This paper aims to examine the effects of Tier-1 capital toward risk management and profitability on the performance of Indonesian Commercial Banks.

Design/methodology/approach

The research population consisted of all commercial banks listed on the Indonesia Stock Exchange. The data were in the form of financial statements of commercial banks for the periods of 2012 to 2016 with a total of 42 companies (bank). From a total of 42 commercial banks listed in the Indonesia Stock Exchange, not all of them met the criteria. Commercial banks that meet these criteria are as many as 28 banks are sampled research.

Findings

Tier-1 capital has a positive direct effect on risk management, Tier-1 capital has a positive indirect effect on profitability with risk management as a mediation variable, risk management has a positive direct effect on profitability, Tier-1 capital has a positive indirect effect on performance with risk management and profitability as mediation variables, risk management has a positive indirect effect on performance with as mediation variable and profitability has a positive impact on performance.

Originality/value

The originality of this research can be seen from the causal relationship between the effects of Tier-1 capital, risk management and profitability on the performance of commercial banks in the context of stock performance among Indonesia commercial banks. Also, the analysis tools using multiple fixed effect panel data models in this research as a novelty in this research. In addition, previous research findings remain inconsistent with one another. By conducting this research, it is expected that more consistent research findings than the previous ones can be generated. Sluggish global economic conditions, which result in declined bank performance are an interesting topic to investigate. The paper uses an original sample, 28 Indonesian banks in 2012-2016. Also, it links Tier 1 capital with risk management and performance in a novel theoretical framework.

Details

Measuring Business Excellence, vol. 25 no. 2
Type: Research Article
ISSN: 1368-3047

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Article
Publication date: 1 January 2010

Mohamed El Hedi Arouri and Duc Khuong Nguyen

The purpose of this paper is to propose an empirical procedure for examining the time‐varying features of cross‐market correlations in selected Gulf stock markets.

1190

Abstract

Purpose

The purpose of this paper is to propose an empirical procedure for examining the time‐varying features of cross‐market correlations in selected Gulf stock markets.

Design/methodology/approach

The paper directly infers the cross‐market linkages from the stock data using a multivariate dynamic conditional correlation GARCH model (DCC‐GARCH). The paper attempts to date the structural breaks in the time‐paths of the conditional correlation indices to investigate whether the cross‐market comovement encompasses significant changes in nature or not.

Findings

Conditional cross‐market correlations between studied markets are shown to be time‐varying, past‐dependent and subject to structural breaks. However, the comovements are still small within the Gulf region and insignificant between the Gulf stock markets and the world market.

Research limitations/implications

Even though the paper attempted to relate the observed changes in market linkages to major economic and political events that the Gulf region experienced during the sample period, a more careful, in‐depth analysis is needed since the primary objectives of this paper consist only of measuring stock market comovements and detecting their possible structure changes.

Practical implications

For global investors, there is still room for international and regional diversification in Gulf markets, given the low degree of comovements documented in the study.

Originality/value

The application of the DCC‐GARCH model and structural change test in a linear framework appears to be suitable for studying the time‐varying properties of cross‐market linkages between markets in the Gulf region. It also provides information about the degree of financial integration of the studied markets with the world stock market through an analysis of the conditional correlation coefficients.

Details

Managerial Finance, vol. 36 no. 1
Type: Research Article
ISSN: 0307-4358

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Article
Publication date: 23 November 2020

Hamad Omar Bakar, Zunaidah Sulong and Mohammad Ashraful Ferdous Chowdhury

This paper aims to investigate the effect of financial development (FD) on economic growth and growth-enhancing transmission channels for the sub-Saharan African (SSA) region in…

453

Abstract

Purpose

This paper aims to investigate the effect of financial development (FD) on economic growth and growth-enhancing transmission channels for the sub-Saharan African (SSA) region in three different periods: the pre-Millennium Development Goals (MDGs) era (1990–1999), during the MDGs (2000–2017) era and the main period (1990–2017).

Design/methodology/approach

The study used the system generalized method of moments (SGMM) approach on 45 SSA countries from 1990 to 2017, using the data collected from the World Bank and the International Monetary Fund (IMF).

Findings

The long-run effect of the study showed mixed results in pre-MDGs and during MDGs periods but was positive in the main period. For growth-enhancing transmission channels, the results were mixed, although in many cases, institutional (INST) quality, human capital (HC) and foreign direct investment (FDI) were the main transmission channels.

Research limitations/implications

Some of the countries were dropped from the analysis due to data inadequacy.

Practical implications

The empirical results of this study provide evidence that the financial sector has robust positive effect throughout 1990–2017. Furthermore, the financial sector depends on several factors to improve economic growth. The SSA region has to focus on improving HC, INST quality in terms of good governance and create environment that is attractive to FDI since they were the main growth-enhancing channels.

Originality/value

Most of the studies in SSA countries assessed the direct effect of FD on economic growth without considering its transmission channels in different time frames. Moreover, they often used specific variables but not the financial index. This study extended the scope by considering various financial sector transmission channels, in different time periods and the financial index.

Details

International Journal of Emerging Markets, vol. 17 no. 3
Type: Research Article
ISSN: 1746-8809

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