scholarly journals An algorithm for topology optimization of gear reducer housing elements

2019 ◽  
Vol 287 ◽  
pp. 01020
Author(s):  
Stoyan D. Slavov ◽  
Mariya Iv. Konsulova-Bakalova
Keyword(s):  
Topology Optimization ◽  
3D Model ◽  
Optimization Methods ◽  
Design Stage ◽  
Control Parameters ◽  
Optimization Software ◽  
Optimization Control ◽  
Different Types ◽  
Definition Of ◽  
The Impact

In recent years, topology optimization methods are becoming more widely used in many engineering fields, and they are already being successfully integrated at the design stage of the different types of products. An active field of research in this area is the definition of appropriate constraints in topology optimization models in order to facilitate the production of the optimized objects. An algorithm for topology optimization of housing elements from gear reducers by using the capabilities of CAD-CAE topology optimization software is presented in the current work. The purposed algorithm is taking into account the resulting loads during operation of the reducer, the geometrical and manufacturing constraints of the production process of these housing elements. Obtained results from conducted Taguchi experimental study to investigate the impact of some topology optimization control parameters over optimized 3D-model also are shown and discussed. Conclusions on the applicability of the algorithm have been made.

scholarly journals An efficient approach to reliability-based topology optimization for the structural lightweight design of planar continuum structures

2021 ◽  
Vol 37 ◽  
pp. 270-281
Author(s):  
Fangfang Yin ◽  
Kaifang Dang ◽  
Weimin Yang ◽  
Yumei Ding ◽  
Pengcheng Xie
Keyword(s):  
Topology Optimization ◽  
Lightweight Design ◽  
Integrated Design ◽  
Optimization Methods ◽  
Filter Function ◽  
Continuum Structures ◽  
Performance Indexes ◽  
Reliability Method ◽  
Economic Indexes ◽  
The Impact

Abstract In order to solve the application restrictions of deterministic-based topology optimization methods arising from the omission of uncertainty factors in practice, and to realize the calculation cost control of reliability-based topology optimization. In consideration of the current reliability-based topology optimization methods of continuum structures mainly based on performance indexes model with a power filter function. An efficient probabilistic reliability-based topology optimization model that regards mass and displacement as an objective function and constraint is established based on the first-order reliability method and a modified economic indexes model with a composite exponential filter function in this study. The topology optimization results obtained by different models are discussed in relation to optimal structure and convergence efficiency. Through numerical examples, it can be seen that the optimal layouts obtained by reliability-based models have an increased amount of material and more support structures, which reveals the necessity of considering uncertainty in lightweight design. In addition, the reliability-based modified model not only can obtain lighter optimal structures compared with traditional economic indexes models in most circumstances, but also has a significant advantage in convergence efficiency, with an average increase of 44.59% and 64.76% compared with the other two reliability-based models. Furthermore, the impact of the reliability index on the results is explored, which verifies the validity of the established model. This study provides a theoretical reference for lightweight or innovative feature-integrated design in engineering applications.

scholarly journals What, where, when, what for and how? (Reflections on Pragmatic Adaptation)

2021 ◽  
pp. 266-279
Author(s):  
Olga V. Petrova
Keyword(s):  
Relevant Information ◽  
Cross Cultural ◽  
Cultural Communication ◽  
Source Language ◽  
Cross Cultural Communication ◽  
Different Types ◽  
Definition Of ◽  
Types Of Information ◽  
The Impact ◽  
Language Text

The article discusses the problem of choosing ways and means of pragmatic adaptation in translating a text. The relevance of the topic is due to the necessity to facilitate cross-cultural communication in view of the increased intensity and diversity of forms of international contacts. The definition of pragmatic adaptation as the actions of a translator aimed at adapting the source language text to its perception by a recipient belonging to a different culture, does not answer the questions of when and how a translator can and should change the text in order to preserve the pragmatic potential of the original. The aim of the article is to analyze the problems arising in translating texts requiring pragmatic adaptation and evaluate the impact of different types of pragmatic adaptation on reproducing the pragmatic potential of the original and achieving the possible purposes of translation. In order to do it an experiment was carried out: a text was translated in four different ways with different means used for its pragmatic adaptation, and the translations were compared. The results of the experiment show that the choice of pragmatic adaptation methods and techniques is determined not by the type of text or the type of adaptation, as is usually believed, but by the specific purpose for which the text is translated. Thus, when translating a literary text, which always contains factual, conceptual, emotional, aesthetic, and cultural information, the choice between the naturalness of the text, the preservation of the author’s style, the completeness of the content and the communication of culturally relevant information means, in fact, setting different accents. The means of pragmatic adaptation used by the translator depend entirely on the prioritization of these types of information, in other words, on the purpose of translation.

scholarly journals Artificial moral agents: an intercultural perspective

2007 ◽  
Vol 7 ◽  
pp. 129-134
Author(s):  
Michael Nagenborg
Keyword(s):  
Poor Countries ◽  
Moral Agents ◽  
Artificial Moral Agents ◽  
Starting Point ◽  
Different Types ◽  
Good Starting Point ◽  
Cultural Dialogue ◽  
Definition Of ◽  
The Impact ◽  
The Relationship

In this paper I will argue that artificial moral agents (AMAs) are a fitting subject of intercultural information ethics because of the impact they may have on the relationship between information rich and information poor countries. I will give a limiting definition of AMAs first, and discuss two different types of AMAs with different implications from an intercultural perspective. While AMAs following preset rules might raise con-cerns about digital imperialism, AMAs being able to adjust to their user‘s behavior will lead us to the question what makes an AMA ?moral?? I will argue that this question does present a good starting point for an inter-cultural dialogue which might be helpful to overcome the notion of Africa as a mere victim.

scholarly journals Models of evaluating the impact of changes technological and industrial areas in enterprise development

2021 ◽  
Vol 10 (40) ◽  
pp. 253-264
Author(s):  
Roman Sherstiuk ◽  
Eduard Malevski ◽  
Nataliia Marynenko ◽  
Olha Pavlykivska ◽  
Liliya Melnyk
Keyword(s):  
Manufacturing Sector ◽  
Enterprise Development ◽  
Internal Factors ◽  
Industrial Areas ◽  
Industrial Enterprises ◽  
Different Types ◽  
Definition Of ◽  
The Impact ◽  
Artificial Changes

In this paper, the authors demonstrated that the industrial enterprises development is impossible without evaluating changes that occur with technological and manufacturing sector enterprises by external and internal factors. As a result of this study on the ratio of different types of external and internal changes, the authors developed a classification of typical situations in which the technological and production sphere of the enterprise. To address the evaluation of changes in the paper developed a set of models assessing the impact of natural and artificial changes to enterprise development based on consideration of the consequences of different rates of technological and industrial areas researched the company and its competitors and provides a definition of the type of the current situation in which the industrial an enterprise that provides grounds for the development of appropriate strategies and measures for its development.

scholarly journals Prioritization of Physical Assets for Maintenance and Production Sustainability

2019 ◽  
Vol 11 (16) ◽  
pp. 4296 ◽  
Author(s):  
Durán ◽  
Durán
Keyword(s):  
Production Systems ◽  
Economic Sustainability ◽  
Systemic Impact ◽  
Different Types ◽  
Maintenance Decisions ◽  
Graphical Technique ◽  
Physical Assets ◽  
Definition Of ◽  
The Impact ◽  
Capital Intensive

Maintenance is one of the main drivers for ensuring the sustainability of manufacturing in capital-intensive production systems. However, in many cases, as a result of budgetary constraints, it is necessary to select which machines will be subject to maintenance actions on the basis of a list of priorities. Traditionally, such prioritization decisions are made using techniques which, in general, do not consider the systemic impact of maintenance actions. This paper is focused at the definition of a novel graphical technique for physical assets prioritization. This technique is aimed at establishing maintenance priorities considering the impact on the overall throughput of the production system. Due to the fact that the proposed technique is based on the well-known Overall Equipment Effectiveness (OEE) index, its use is not only limited to measuring the effects of maintenance decisions and actions (availability), but also to operational implications (productivity and utilization). The results could be displayed graphically, which makes it particularly useful and manageable for different types of users. The methodology is illustrated though an example based on a comminution plant from the copper mine industry. It is evident how the proposed technique facilitates business-oriented and economic sustainability focused decisions.

scholarly journals Present Status in Polymeric Mouthguards. A Future Area for Additive Manufacturing?

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1490 ◽  
Author(s):  
Ana M. Sousa ◽  
Ana C. Pinho ◽  
Ana Messias ◽  
Ana P. Piedade
Keyword(s):  
Additive Manufacturing ◽  
Impact Energy ◽  
Present Status ◽  
Material Characterization ◽  
Control Parameters ◽  
Contact Sports ◽  
Different Types ◽  
Manufacturing Techniques ◽  
The Impact ◽  
The Ideal

Athletes from contact sports are more prone to orofacial injuries because of the exposure to possible shocks and collisions derived from physical proximity. The use of protector polymeric mouthguards proved to be useful in the prevention of the described injuries. There are different types of mouthguards with varying ranges of protection and prices, but they are all made from polymers and share the same propose: to absorb and dissipate the impact energy resulting from the shocks. As they are used inside the mouth, they should not impair breathing and speaking nor compromise the comfort of the athlete. However, the ideal mouthguard is yet to be created. The choice of the most appropriate polymeric material and the standard required properties have not yet been reported. Regardless of the numerous studies in this field, normalized control parameters for both material characterization and mouthguard fabrication are absent. This paper aims to present a review of the current types of available mouthguards and their properties/characteristics. Moreover, a detailed description of the most common polymers for the fabrication of mouthguards, together with the manufacturing techniques, are discussed.

Using Interfaces to Drive Module Definition: Investigating the Impact of a New Design Dependency Measure

2014 ◽  
Author(s):  
Sangjin Jung ◽  
Timothy W. Simpson ◽  
Oyku Asikoglu
Keyword(s):  
Relative Strength ◽  
Change Resistance ◽  
Product Architecture ◽  
Logical Definition ◽  
Design Structure ◽  
Different Types ◽  
Optimizing Design ◽  
Interface Definition ◽  
Definition Of ◽  
The Impact

Structural representations for interfaces between modules and components in a product vary widely in the literature. After reviewing several structural approaches to interface definition, a new weighted design dependency measure is described. The new representation takes into account both six different types of interfaces as well as their relative strength and frequency within a product architecture. The resulting design dependency measure provides a means for designers to quantify the change resistance in a product. In this paper, we investigate the use of this new design dependency measure to drive module identification. Specifically, we compare the resulting modules obtained by optimizing Design Structure Matrices (DSMs) using standard 0-1 representations of the interfaces to those obtained using the new design dependency measure. The results indicate that the weighted design dependency measure leads to more a logical definition of modules that maximizes within module dependencies and minimizes interactions between modules.

Topology Optimization Design of Bars Structure Based on SKO Method

2013 ◽  
Vol 394 ◽  
pp. 515-520 ◽  
Author(s):  
Wen Jun Li ◽  
Qi Cai Zhou ◽  
Xu Hui Zhang ◽  
Xiao Lei Xiong ◽  
Jiong Zhao
Keyword(s):  
Global Optimization ◽  
Topology Optimization ◽  
Optimization Design ◽  
Optimization Problem ◽  
Optimization Problems ◽  
Optimization Methods ◽  
Topology Optimization Problem ◽  
Proposed Model ◽  
Continuum Structure ◽  
The Impact

There are less topology optimization methods for bars structure than those for continuum structure. Bionic intelligent method is a powerful way to solve the topology optimization problems of bars structure since it is of good global optimization capacity and convenient for numerical calculation. This article presents a SKO topology optimization model for bars structure based on SKO (Soft Kill Option) method derived from adaptive growth rules of trees, bones, etc. The model has been applied to solve the topology optimization problem of a space frame. It uses three optimization strategies, which are constant, decreasing and increasing material removed rate. The impact on the optimization processes and results of different strategies are discussed, and the validity of the proposed model is proved.

Knowledge Expertise and Mass Amateurization on Internet-Based Knowledge Markets

2016 ◽  
Vol 01 (01) ◽  
pp. 1650002 ◽  
Author(s):  
Zuopeng Justin Zhang ◽  
Zhen Zeng ◽  
Li Zhang
Keyword(s):  
The Internet ◽  
Formal Framework ◽  
Different Types ◽  
Definition Of ◽  
The Impact

Few studies have investigated the emerging category of Pro-Ams and its impact on knowledge markets over the Internet. We tend to address this gap in our study. Our research proposes a formal framework of knowledge expertise with mass amateurization and analyzes its impact on Internet-based knowledge markets. Specifically, the new definition of knowledge expertise consists of three major components: primary, searching, and learning expertise. Due to the effect of mass amateurization, questions posted by knowledge seekers on Internet-based knowledge markets are more likely to be answered by knowledge providers, resulting in more knowledge transactions to be consummated. This paper also discusses the impact of mass amateurization on different types of Internet-based knowledge markets. This research provides valuable insights for practitioners to manage knowledge markets with effective policies.

scholarly journals Re-engineering of Cast Product by Topology Optimization

2021 ◽  
Vol 9 (9) ◽  
pp. 1211-1216
Keyword(s):  
Topology Optimization ◽  
Real Time ◽  
3D Model ◽  
Optimization Procedure ◽  
Casting Process ◽  
Software Modeling ◽  
Force Analysis ◽  
Optimization Software ◽  
Cast Product ◽  
Load Conditions

Topology optimization is useful to carrying out the weight reduction and in process cost reduction can be achieved. This kind of optimization input shape and size modification and optimization give us improved product in reduction of material. For this study, planet pinion carrier is selected for topology optimization. Software gives an innovative real-time picture of company activities and ecosystem and links people, ideas and data in a single collaborative environment. The 3DEXPERIENCE platform as an operating system helps companies to achieve operational excellence. Casting is a process where allowances and other things are provided and if we could able to optimize the material and weight of the casting there is a scope for optimization the material size and shape in casting process. Planet pinion carrier which is a cast product is taken from well-known industry for topology optimization. For optimization that product first 3D model is done and this 3D model is given as an input for topology optimization software. Force analysis is carried out by using ANSYS software and then topology optimization procedure is applied accordingly product is optimized. After topology optimization again force analysis is carried out. It has been found that 20 percent reduction is observed in this study. The part details and load conditions are given by well-known industry for topology optimization. Size, shape and cost is reduced by giving various load conditions in FUSION 360 software. Modeling and remodeling is done using software. Comparative study has been done using AUTOCAST software. Part details are calculated and also casting flow and real time for actual casting is simulated by using software.

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