Daniel de Bortoli, Fauzan Adziman, Eduardo A. de Souza Neto and Francisco M. Andrade Pires
The purpose of this work is to apply a recently proposed constitutive model for mechanically induced martensitic transformations to the prediction of transformation loci…
Abstract
Purpose
The purpose of this work is to apply a recently proposed constitutive model for mechanically induced martensitic transformations to the prediction of transformation loci. Additionally, this study aims to elucidate if a stress-assisted criterion can account for transformations in the so-called strain-induced regime.
Design/methodology/approach
The model is derived by generalising the stress-based criterion of Patel and Cohen (1953), relying on lattice information obtained using the Phenomenological Theory of Martensite Crystallography. Transformation multipliers (cf. plastic multipliers) are introduced, from which the martensite volume fraction evolution ensues. The associated transformation functions provide a variant selection mechanism. Austenite plasticity follows a classical single crystal formulation, to account for transformations in the strain-induced regime. The resulting model is incorporated into a fully implicit RVE-based computational homogenisation finite element code.
Findings
Results show good agreement with experimental data for a meta-stable austenitic stainless steel. In particular, the transformation locus is well reproduced, even in a material with considerable slip plasticity at the martensite onset, corroborating the hypothesis that an energy-based criterion can account for transformations in both stress-assisted and strain-induced regimes.
Originality/value
A recently developed constitutive model for mechanically induced martensitic transformations is further assessed and validated. Its formulation is fundamentally based on a physical metallurgical mechanism and derived in a thermodynamically consistent way, inheriting a consistent mechanical dissipation. This model draws on a reduced number of phenomenological elements and is a step towards the fully predictive modelling of materials that exhibit such phenomena.
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Rodrigo Pinto Carvalho, Igor A. Rodrigues Lopes and Francisco M. Andrade Pires
The purpose of this paper is to predict the yield locus of porous ductile materials, evaluate the impact of void geometry and compare the computational results with existing…
Abstract
Purpose
The purpose of this paper is to predict the yield locus of porous ductile materials, evaluate the impact of void geometry and compare the computational results with existing analytical models.
Design/methodology/approach
A computational homogenization strategy for the definition of the elasto-plastic transition is proposed. Representative volume elements (RVEs) containing single-centred ellipsoidal voids are analysed using three-dimensional finite element models under the geometrically non-linear hypothesis of finite strains. Yield curves are obtained by means of systematic analysis of RVEs considering different kinematical models: linear boundary displacements (upper bound), boundary displacement fluctuation periodicity and uniform boundary traction (lower bound).
Findings
The influence of void geometry is captured and the reduction in the material strength is observed. Analytical models usually overestimate the impact of void geometry on the yield locus.
Originality/value
This paper proposes an alternative criterion for porous ductile materials and assesses the accuracy of analytical models through the simulation of three-dimensional finite element models under geometrically non-linear hypothesis.
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Samuel Façanha Câmara, Francisco Roberto Pinto, Felipe Roberto da Silva, Paulo Torres Junior and Marcelo Oliveira Soares
This study aimed to identify the potential for economic activities related to the ocean economy in Brazil to become blue economy (BE) activities, in which the concept of the…
Abstract
Purpose
This study aimed to identify the potential for economic activities related to the ocean economy in Brazil to become blue economy (BE) activities, in which the concept of the Sustainable Development Goals (SDGs) is central.
Design/methodology/approach
To achieve the aim, the authors collected information on the SDGs and estimated data from the ocean economy sectors for the 256 Brazilian coastal cities. The authors predicted the indices for potential development of territories and sectors in the BE using two parameters: employed persons (EP) and sectoral added value (AV).
Findings
The results show that the capitals of coastal states present the highest potential indices for the BE, especially Rio de Janeiro, which accounted for 83.3% of sectoral added value in the Brazilian ocean economy with potential for sustainable development and generated 107,800 active formal jobs (26.9% of the country's total). In addition, restaurants, hotels and similar establishments are, on the Brazilian coast, the most frequent on the coastal zone and have the highest potential for BE activities.
Originality/value
Regarding its contributions, this research innovates by developing an indicator that can help stakeholders understand the similarities and differences between cities and regions, whether through a social, economic, or environmental lens. Therefore, by following this methodological path for measuring the BE, viewing the distinct patterns of sustainable development by area is possible, thereby supporting action plans for the fulfillment of the 2030 Agenda and the implementation of a marine spatial planning process for the country in the context of the Ocean Decade (2021–2030).
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-02-2023-0112
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Lara Cristina Francisco de Almeida Fehr and Welington Rocha
This paper aims to discuss the role of open-book accounting (OBA) and trust on buyer–supplier relationship satisfaction. The objective of this paper is to analyze how OBA and…
Abstract
Purpose
This paper aims to discuss the role of open-book accounting (OBA) and trust on buyer–supplier relationship satisfaction. The objective of this paper is to analyze how OBA and trust influence satisfaction on the relationship between suppliers and buyers in the Brazilian automotive sector’s supply chain.
Design/methodology/approach
The research has been developed based on a qualitative strategy, characterized as explanatory. Data gathering has been conducted through document analysis and semi-structured interview, and content analysis has been used for discourse analysis.
Findings
Results show that OBA is unilateral, imposed by the auto manufacturer, representing a selective information process, as suppliers try to protect their information value as far as possible. Trust is partial and cooperation is not spontaneous, both driven by the search for benefits. OBA may yield a positive or a negative outcome with regard to the social and the economic overall satisfaction of suppliers, depending on how the information is used by auto manufacturer.
Originality/value
The main contribution of this article is to provide an understanding of the difficulties of applying the OBA in companies and of the factors that may influence its operation and performance, impacting on satisfaction and continuity of relationships. The paper also contributes with the proposal of a clearer and more objective definition of OBA. Being the intention that new research in this area can be developed from a delimited, clear and objective definition of OBA, allowing better understanding on the subject and comparison among research studies.
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Barbara de Lima Voss, David Bernard Carter and Bruno Meirelles Salotti
We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in…
Abstract
We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.
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Anete Alberton, Ana Paula Kieling, Franciane Reinert Lyra, Estela Maria Hoffmann, Mariana Pires Vidal Lopez and Silvio Roberto Stefano
This study analyzes the competencies toward sustainability in hotel facilities in order to identify the level of implementation of sustainability practices, as well as individual…
Abstract
Purpose
This study analyzes the competencies toward sustainability in hotel facilities in order to identify the level of implementation of sustainability practices, as well as individual competencies for sustainability in the hospitality companies.
Design/methodology/approach
Interviews and a survey with hotel employees were conducted in two important touristic Brazilian cities, Florianopolis, and Rio de Janeiro, considering the TBL (triple bottom line) dimensions. The data were analyzed with content analysis and descriptive statistics and conjoint analysis.
Findings
Preventive competencies in the companies' management were identified. The research also revealed that competencies for sustainability are fairly present in the hospitality context yet, which demonstrates the urgency to discuss the theme in both academic and business practices.
Research limitations/implications
The access to the hotel managers impaired the performing of a robust statistical analysis; the study provided new insights about the topics investigated and generated information for the theoretical framework about competencies for sustainability.
Practical implications
The research results emphasized the need for the hotel industry to invest in sustainable strategies to meet its target audience, but also to raise the level of its staff and reduce costs in the long term, offering benefits to society, the environment, and, to their businesses.
Social implications
The research socially contributes through promoting discussion on sustainability, which is one of the most challenging and relevant issues for society. Besides, it can assist the diffusion of the competencies for sustainability in the hotel industry, as an attempt to decrease their negative externalities on the environment and primary audiences.
Originality/value
It was identified a distance between practice and the triple bottom line concept, which is linked only to environmental practices. Besides, it was found limited knowledge about the concepts of competencies in the companies.
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Josefa Salete Barbosa Cavalcanti
The community can be considered as an empirical category of thought and hope. This is how various understandings of real, imagined, invented, local, and global communities are…
Abstract
The community can be considered as an empirical category of thought and hope. This is how various understandings of real, imagined, invented, local, and global communities are created. Sociological studies give meaning to this heuristic category and its historical representations and its values centered around a world of proximity, primordial loyalties, solidarity, face-to-face communication, production, reproduction, knowledge, and environmental preservation. Community equally expresses the existence of a territory where populations reproduce; a place for a convivial exchange among generations, traditions, and respect to cultural heritages and ethnic boundaries. The rural community is seen as the guardian of present and past histories of groups identified by struggles for subsistence, resistance, and celebration of memories from ancestors. Community provides the foundation for sociability and sustainability. In the context of a fluxional, risky, and individualized society, community members are becoming more vulnerable as their pleas for solidarity and safety are unheard. Although the rural community described here has been an object of speculation and violence that affect our world, the concept of community is still desired. Accordingly, its relevance is renewed for a prosperous rural future in a globalizing world.