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Extends the stress update algorithm and the tangent operator recently proposed for generalized plasticity by De Borst and Heeres to the case of partially saturated soils, where on top of the hydrostatic and deviatoric components of the (effective) stress tensor suction has to be considered as a third independent variable. The soil model used for the applications is the Bolzon‐Schrefler‐Zienkiewicz model, which is an extension of the Pastor‐Zienkiewicz model to partial saturation. The algorithm is incorporated in a code for partially saturated soil dynamics. Back calculation of a saturation test and simulation of surface subsidence above an exploited gas reservoir demonstrate the advantage of the proposed algorithm in terms of iteration convergence of the solution.

An important characteristic of many soil models is a volume change during plastic flow. In computations, this plastic volume change is expressed via a kinematic constraint on the possible deformations. Due to this constraint the plane‐strain three‐noded triangular element exhibits locking when plastic deformations occur, under dilatant, contractant and isochoric conditions. It is demonstrated that using the method of enhanced assumed strains by Simol this locking cannot be remedied. For six‐noded wedges and four‐noded and five‐noded pyramids the same conclusion is obtained.

Purpose – The aim of this work is to provide a global 3D finite element (FE) model devoted to the modelling of superficial soil ploughing in the large deformation range and for a vast class of soil treatment tools. Design/methodology/approach – We introduced soil constitutive equation in a FE software initially designed for the metal forming. We performed the numerical integration of the non‐linear ploughing problem. Non‐linearities encountered by the problem can be summed up: as soil constitutive equation (idealized with non‐associated compressible plastic law), unilateral frictional contact conditions (with a rigid body), geometrical non‐linearities (the ploughing tool) and large deformation range. To handle such difficulties we performed several numerical methods as implicit temporal scheme, Newton‐Raphson, non‐symmetric iterative solver, as well as proper approximation on stress and strain measures. Findings – Main results deal with the validation of the integration of the non‐linear constitutive equation in the code and a parametric study of the ploughing process. The influence of tool geometric parameters on the soil deformation modes and on the force experienced on the tools had been point out. As well, the influence of soil characteristics as compressibility had been analyzed. Research limitations/implications – This research is devoted to perform a numerical model applicable for a large range of soil treatment tools and for a large class of soil. However, taking into account all kind of soil is utopist. So limitations met are essentially related to the limit of the accuracy of the elasto‐plastic idealization for the soil. Practical implications – In practice the numerical model exposed in the paper can clearly help to improve and optimize any process involving superficial soil submitted to the mechanical action of a rigid body. Originality/value – The original value of the paper is to provide a global and an applicable numerical model able to take into account the main topics related to the ploughing of superficial soils. Industrials in geotechnics, in agriculture or in military purposes can benefit in using such numerical model.

The purpose of this article is to propose an overall framework for brand community formation that separates antecedents that lead to the formation of a brand community from those outcomes that are associated with established communities.

The authors approached this review through an interdisciplinary literature review that delineated psychological, structural and behavioral processes that underline the formation of the brand community, often illustrated by contemporary cases in the sport industry.

The findings outline 18 different constructs, categorized in three overarching dimensions, separating structural, behavioral and psychological constructs. The authors posit these 18 constructs are at the heart of brand community formation. These constructs provide managers with a guide to inform their efforts to form a new brand community.

It is emphasized that brand community formation is a complex process that is paradoxical in nature and requires organizations to balance a non-interventionist approach that would allow for consumer empowerment, with a pro-active approach that creates conditions for a successful brand community formation process.

The purpose of this paper is to give an explanation of the new data available about surface subsidence above the depleted gas reservoir Ravenna Terra. These data confirm the existence after end of exploitation of a reversed subsidence bowl with minimum subsidence above the reservoir, as opposed to conventional subsidence bowls during exploitation which show maximum subsidence in the same location.

The paper analyses these new data about the existence after end of exploitation of a reversed subsidence bowl. The observed behaviour is reproduced successfully with a fully coupled two phase flow code in deforming reservoir rocks which incorporates a constitutive model for partially saturated porous media.

The paper provides successful simulations. These allow affirming with confidence that the explanation for the peculiar behaviour is reservoir flooding and partially saturated rock behaviour.

Further research: other case studies where similar behaviour is expected, e.g. Ekofisk.

The paper includes implications for better management of reservoir exploitation schedules to minimize the observed phenomenon.

This paper explains the peculiar behaviour of subsidence above the depleted gas reservoir Ravenna Terra and confirms the conjecture that constitutive behaviour of partially saturated rocks is the origin of the observed phenomenon.

The stress–strain behaviors of rockfill materials in dams are significantly affected by the anisotropy and grain crushing. However, these factors are rarely considered in numerical simulations of high rockfill dams. This study intends to develop a reasonable and practical constitutive model for rockfill materials to overcome the above problems.

The effects of anisotropy and grain crushing are comprehensively considered by the spatial position of the reference state line. After the improved generalized plasticity model for rockfill materials (referred to as the PZR model) is developed and verified by laboratory tests, it is used with the finite element method to simulate the stress–strain behaviors of the Nuozhadu high core rockfill dam.

The simulated results agree well with the laboratory tests data and the situ monitoring data, verifying the reliability and practicability of the developed PZR model.

A new anisotropic state parameter is proposed to reflect the nonmonotonic variation in the strength as the major principal stress direction angle varies. This advantage is verified by the simulation of a set of conventional triaxial tests with different inclination angles of the compaction plane. 2) This is the first time that the elastoplastic model is verified by the situ monitoring data of high core rockfill dams. The numerical simulation results show that the PZR model can well reflect the stress–strain characteristics of rockfill materials in high core rockfill dams and is better than the traditional EB model.

This paper presents a numerical approach for analysing three‐dimensional steady‐state rolling by means of the reproducing kernel particle method (RKPM). The approach is based on the flow formulation for slightly compressible materials and a detailed description of RKPM and its numerical implementation is presented with the objective of providing the necessary background. Special emphasis is placed on the construction of shape functions and their derivatives, enforcement of the essential boundary conditions and treatment of frictional effects along the contact interface between the workpiece and the roll. The effectiveness of the proposed approach is discussed by comparing the theoretical predictions with the finite element calculations and experimental data found in the literature.

Sport management research that examines children as a distinct group of sport consumers is sparse, and therefore the authors know relatively little about how and why children become fans of sport teams. The purpose of this paper is to explore the game-day experiences of children in order to better understand how these experiences allow children to socialize into the team community and become fans of the team.

The authors examine this through exploratory observational analysis and 26 semi-structured interviews with children at professional sporting events.

Among the results, it was found that children primarily focus on exploring ways to build membership in the fan community as opposed to initially building connections to the team itself. In addition, those children that watched the games with their peers demonstrated greater in-game emotional responses than those children that viewed the game with family.

This study provides support for the importance of community membership in the initial stages of sport team fandom as well as the varying effects of different groups within fan communities on child fans. However, further research is needed to increase the generalizability of the results.

It is recommended that sport teams increasingly target groups that will bring children to games with their peers in order to enhance their game experience and increase their socialization into fandom.

This paper is one of the first in sport management to directly look to better understand children and the ways in which they become fans of sports teams.

The emergence and success of online brand communities in the marketplace have attracted considerable interest; this study seeks to determine the conditions in which people create social environments by investigating the drivers of connections to a focal online brand community and other brand communities. The purpose of this paper is to investigate the composition of multi-community networks, focussing on the density and centrality of brand communities.

On the basis of insights from prior literature, the proposed model examines customers’ social relationships with multiple brand communities. A survey of 290 participants spans eight brand communities. The modeling process used structural equation modeling; the analysis of the social relationship among brand communities relied on an ego network approach.

Two drivers prompt connections to other online brand communities. First, personal identification with a core brand community enhances connections to other communities. Second, some core brand members choose a functionality-driven approach in creating social environments.

For marketers, this study highlights the importance of positioning the brand community as part of a social environment. To strengthen customer-brand relationships, marketers should focus on community members’ multiple memberships.

This paper extends understanding of online brand community members’ motivations to participate in a focal brand community. It also explains the creation of a social environment, through a careful consideration of participation in different brand communities and their relationships.