Ruding Lou

Ecole Nationale Supérieure d'Arts et Métiers | ENSAM · LiSPEN

In the context of optimization and cycles reduction for product design in industry, digital collaborative tools have a major impact, allowing an early stage integration of multidisciplinary challenges and oftentimes the search of global optimum rather than domain specific improvements. This paper presents a methodology for improving participants’ i...

Glancing Angle Deposition (GLAD) is a technique used in Physical Vapor Deposition (PVD) to prepare thin films with specific properties. During the deposition process, a tilt is introduced between the sputtered atoms flux and the normal of the substrate surface. By shadowing effect, this induces tilted nano-columns that affect the properties of the...

Abstract: Today virtual reality technologies is becoming more and more widespread and has found strong applications in various domains. However, the fear to experience motion sickness is still an important barrier for VR users. Instead of moving physically, VR users experience virtual locomotion but their vestibular systems do not sense the self-mo...

Virtual reality (VR) is a computer-based technology that can be used by professionals of many different fields to simulate an environment with a high feeling of presence and immersion. Nonetheless, one main issue when designing such environments is to provide user interactions that are adapted to the tasks performed by the users. Thus, we propose h...

The advent of low-cost technologies makes the use of immersive virtual environments more interesting for several application contexts. 3D models are largely used in such environments for providing feelings of immersion and presence in the virtual world. 3D models are normally defined in dedicated authoring tools and then adapted to be used in the v...

Résumé : La ré alité virtuelle (RV) est une technologie d'environnement tridimensionnelle, qui intègre plusieurs technologies pour générer un environnement de perception tridimensionnel réaliste en impliquant des récepteurs sensoriels tels que la vue, l'ouï e, le toucher, etc. La technologie « Building Information Modeling » (BIM) consiste à établi...

In the Architecture, Construction and Engineering (AEC) industry, a crucial task is Building Information Modelling (BIM) models coordination. Clashes can be detected automatically by current BIM tools. Clash origins, or avoidance have been studied. But, clash resolution still needs the civil engineers’ expertise. Currently, in a computer with a 3D...

The Building Information Modelling (BIM) currently contributes to deeply modify the Architecture, Construction and Engineering (AEC) industry by improving data management, task planning, and architecture design etc. Nevertheless, other technologies have also joined this revolution, with the aim of allowing experts to perform better their tasks with...

Since a couple of years, virtual reality (VR) technologies showed to be more and more useful and used in digital activities. One major and well-known issue that occurs during VR experience is the provocation of cybersickness, which refrains users from accepting these technologies. The induced cybersickness is due to a self-motion feeling that is pr...

Building Information Modelling (BIM) is an up-and-coming methodology and technology used in the Architecture, Engineering and Construction (AEC) industry, that allows data centralization and stakeholders’ collaboration. But to check the accuracy of the work done on the worksite, it is necessary first to go on site and then to modify the BIM model....

The current trend of product design leads to a change in the collaborative working style. To find the most efficient way to exchange information on the digital mock-up of a product, a synchronous co-located collaborative design environment with recent technologies is in needed. A new groupware of multi-view system allows multiple users to have indi...

Public Participation encounters great challenges in the domain of urban design concerning decision making and citizens' appropriation of a future place. Many tools and methods have been proposed to ease the participation process. In this paper we are targeting artefacts used in face-to-face workshops, in which citizens are asked to make design prop...

Nowadays, virtual reality (VR) is widely used in the AEC (architecture, engineering and construction) industry. One crucial issue is how to reuse Building Information Modeling (BIM) models in VR applications. This paper presents an approach for a smart adaptation of BIM models for using in VR scene, by following the needs expressed by building proj...

In co-located collaborative environment for product design, new groupware of multi-view system allows multiple experts to have individual visual information. A co-located multi-view VR system and a multidisciplinary task have been created and studied. Results show that using multi-view VR system achieves a better effectiveness and user performance....

Nowadays more and more industrial design activities adopt the strategy of Concurrent Engineering (CE), which changes the way to carry out all the activities along the product’s lifecycle from sequential to parallel. Various experts of different activities produce technical data using domain-specific software. To augment the interoperability among t...

https://hal.archives-ouvertes.fr/hal-01670323/document

Purpose – The purpose of this paper is to set up a new framework to enable direct modifications of volume meshes enriched with semantic information associated to multiple partitions. An instance of filleting operator is prototyped under this framework and presented in the paper. Design/methodology/approach – In this paper, a generic mesh modificat...

Currently adopted process from Computer-Aided Design (CAD) product definition to numerical simulation could be improved by avoiding the return to the CAD model for model modification. To this aim, we propose a generic mesh modification operator whose architecture is detailed in this paper. A new instance of this operator for filleting finite elemen...

Behaviour analysis is largely performed on the virtual model of the product before its physical manufacturing. Anyhow, the process could be further optimised especially during the product behaviour optimisation phase. This process involves repetition of four main processing steps: CAD design, mesh creation, enrichment of physical semantics and Fini...

A new approach to the merging of Finite Element (FE) triangle meshes is proposed. Not only it takes into account the geometric aspects, but it also considers the way the semantic information possibly associated to the groups of entities (nodes, faces) can be maintained. Such high level modification capabilities are of major importance in all the en...

Behaviour analysis loop is largely performed on virtual product model before its physical manufacturing. The last avoids high expenses in terms of money and time spent on intermediate manufacturing. It is gainful from the reality to the virtuality but the process could be further optimized especially during the product behaviour optimization phase....

Advances in modeling of discrete models have allowed the development of approaches for direct mesh modeling and modification. These tools mainly focus on modeling the visual appearance of the shape which is a key criterion for animation or surgical simulation. Most of the time, the resulting mesh quality as well as the semantics preservation capabi...

Nowadays, most of the numerical simulations in product maintenance are carried out by several loops of the following steps: 1) CAD model creation/optimization, 2) Finite Element (FE) mesh generation, 3) insertion of semantic data for physical simulation (e.g. material behavior laws, boundary conditions) and 4) FE simulation and analysis of the resu...

Nowadays, the mainstream methodology for product behavior analysis and improvement relies on the fol-lowing steps: 1) conceptual solution proposal and CAD prototyping, 2) mesh model creation for Finite Element (FE) analysis, 3) preparation of complex mesh model as specification of semantic information for particular behavior study, 4) advanced FE s...

Dans le cadre de la maintenance de produits industriels, on utilise de plus en plus la simulation numérique pour évaluer plusieurs solutions possibles. La simulation numérique permet d'éviter des expérimentations parfois longues et coûteuses pour arriver à des modifications physiques optimales sur les équipements. Pour réaliser la simulation numéri...

Nowadays, most of the numerical simulations are carried out by successively performing the following steps: CAD model definition or modification, conversion to a mesh model and enrichment with semantic data relative to the simulation (e.g. material behaviour laws, boundary conditions), Finite Element simulation and analysis of the results. Classica...

Nowadays, most of the numerical product behavior analyses are carried out following four steps: Com-puter Aided Design (CAD) modeling, mesh defini-tion, Finite Element (FE) simulation and results anal-ysis. This process can be completed by optimization loops. In the context of current maintenance and life-cycle problems, the product is already desi...