Volume 1A: 38th Computers and Information in Engineering Conference最新文献_第3页

On the Multiphysics Modeling of the Sliding Wear Between Deformable Heat Conducting Bodies 可变形导热体间滑动磨损的多物理场建模

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86077

J. Michopoulos, A. Iliopoulos, J. Steuben, A. Birnbaum

{"title":"On the Multiphysics Modeling of the Sliding Wear Between Deformable Heat Conducting Bodies","authors":"J. Michopoulos, A. Iliopoulos, J. Steuben, A. Birnbaum","doi":"10.1115/DETC2018-86077","DOIUrl":"https://doi.org/10.1115/DETC2018-86077","url":null,"abstract":"An approach exploiting the relevant conservation laws associated with the wear due to sliding between deformable heat conducting bodies is presented in this work. The proposed methodology considers a pair of wearing objects in contact where their wear behaviors are encapsulated by semantically reduced one-dimensional, time-dependent ordinary differential equations (ODEs) as a replacement to the full mass conservation PDEs governing mass loss due to the various mechanisms present at the interface. At the same time, the conservation of energy and momentum are still expressed by the full form of the PDEs representing them. To assess the feasibility of this approach a reciprocating sliding contact pair of dissimilar materials is considered. The high dimensional thermo-mechanical problem is solved simultaneously and tightly coupled with the two ODE wear models for each of the wear pair bodies, thus enabling predictions of wear for both of them. Furthermore, an Arbitrary-Lagrangian-Eulerian (ALE) approach has been used to produce the evolution of the wear fronts on both elements of the sliding contact pair through physics-informed mesh deformation consistent with the results computed in the previous step. The main advantage of this approach enables the usage of any low dimensional wear model (i.e, mechanical failure, phase transformation-based, etc.) in a computationally detailed and efficient manner.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126700034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Physics-Based Semantic Reasoning for Function Model Decomposition 基于物理的功能模型分解语义推理

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86273

Xiaoyang Mao, Chiradeep Sen

{"title":"Physics-Based Semantic Reasoning for Function Model Decomposition","authors":"Xiaoyang Mao, Chiradeep Sen","doi":"10.1115/DETC2018-86273","DOIUrl":"https://doi.org/10.1115/DETC2018-86273","url":null,"abstract":"In graph-based function models, the function verb and flow noun types are usually controlled by vocabularies of standard classes. The grammar is also controlled at different levels of formalism and contribute to reasoning. However, the text written in plain English for the names of the functions and flows is not used for formal reasoning to help with modeling or exploring the design space. This paper presents a formalism for semantic and physics-based reasoning on function model graphs, esp. to automatically decompose black box models and to generate design alternatives using those plain-English texts. A previously established formal language, which ensures that function models are consistent with physics laws, is used as a baseline. Semantic reasoning is added to use the unstructured information of the flow phrases to infer possible means of decomposing the model into a topology connecting appropriate subfunctions and to generate multiple alternative decompositions. A data structure of flow nouns, flow attributes, qualitative value scales, and qualitative physics laws is used as the data representation. An eight-step algorithm manipulates this data for reasoning. The paper shows two validation case studies to demonstrate the workings of the language.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129939798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Super-Metamodeling Framework to Optimize System Predictability 优化系统可预测性的超元建模框架

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86055

Zhuo Yang, D. Eddy, S. Krishnamurty, I. Grosse, Yan Lu

{"title":"A Super-Metamodeling Framework to Optimize System Predictability","authors":"Zhuo Yang, D. Eddy, S. Krishnamurty, I. Grosse, Yan Lu","doi":"10.1115/DETC2018-86055","DOIUrl":"https://doi.org/10.1115/DETC2018-86055","url":null,"abstract":"Statistical metamodels can robustly predict manufacturing process and engineering systems design results. Various techniques, such as Kriging, polynomial regression, artificial neural network and others, are each best suited for different scenarios that can range across a design space. Thus, methods are needed to identify the most appropriate metamodel or model composite for a given problem. To account for pros and cons of different metamodeling techniques for a wide diversity of data sets, in this paper we introduce a super-metamodel optimization framework (SMOF) to improve overall prediction accuracy by integrating different metamodeling techniques without a need for additional data. The SMOF defines an iterative process first to construct multiple metamodels using different methods and then aggregate them into a weighted composite and finally optimize the super-metamodel through advanced sampling. The optimized super-metamodel can reduce an overall prediction error and sustains the performance regardless of dataset variation. To verify the method, we apply it to 24 test problems representing various scenarios. A case study conducted with additive manufacturing process data shows method effectiveness in practice.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121545160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Efficient CNC Machining of Freeform Surfaces From Point Cloud 基于点云的自由曲面的高效数控加工

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85072

M. Dhanda, S. S. Pande

{"title":"Efficient CNC Machining of Freeform Surfaces From Point Cloud","authors":"M. Dhanda, S. S. Pande","doi":"10.1115/DETC2018-85072","DOIUrl":"https://doi.org/10.1115/DETC2018-85072","url":null,"abstract":"This paper reports the development of an efficient tool path planning strategy for CNC machining of freeform surfaces directly from their representation in the form of point cloud. A grid based adaptive isoplanar tool path planning system has been designed and implemented for 3axis CNC machine using ball end mill. Inverse tool offset algorithm (IOM) is used to compute initial uniform CL (Cutter Location) grid points. From these CL points, surface slope and curvature are estimated and the forward and side step errors likely to be produced during machining are computed. The grid is subsequently refined through segmentation if the error values exceed the user defined tolerances. Adaptive grid refinement is continued iteratively till the error values converge below the prescribed tolerance limits. The grid (CL) points are sequenced to generate the final tool path. The software system developed takes the input part model as point cloud and generates post-processed CNC part program in the ISO format. The CNC part programs were extensively tested for various case studies on the commercial CNC simulator as well on the actual CNC machine. The results were compared with those from the commercial software for the same process conditions. Our system was found to generate more efficient tool paths in terms of enhanced productivity, part quality and reduced memory requirement.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126972982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Harvesting for Nuclear Waste Sensing and Monitoring 用于核废料传感和监测的能量收集

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85925

Yongjia Wu, J. Klein, Hanchen Zhou, L. Zuo

引用次数: 0

A Formal Process to Support Resolution of Functional Trade-Offs in Complex Product Development 支持解决复杂产品开发中功能权衡的正式过程

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86317

Muyo Tai, Keita Ishida, K. Oizumi, K. Aoyama

{"title":"A Formal Process to Support Resolution of Functional Trade-Offs in Complex Product Development","authors":"Muyo Tai, Keita Ishida, K. Oizumi, K. Aoyama","doi":"10.1115/DETC2018-86317","DOIUrl":"https://doi.org/10.1115/DETC2018-86317","url":null,"abstract":"This paper proposes a method to resolve trade-off problems between functionalities, which hinders unconventional improvement of a product. As products have become increasingly complex, it becomes difficult to grasp the whole aspects of a product. In order to resolve trade-off problems of a complex product, it is required to model the product in an appropriate form and to gather knowledge of experts in each domain. Although there have been several models to tackle with this issue, modelling still poses difficulties due to lack of clear guideline. This paper classified models into three types: function-based, cognition-based and physics-based. Then, their roles and description guidelines are clarified. As a function-based model depicts functionality of a product in a rather simple description, it is employed to specify significant tradeoffs. A cognition-based model depicts the designers’ recognition of physical phenomena while a physics-based model rigorously depicts the physical phenomena. A cognition-based model is appropriate for ideation while physics-based model contributes to objectivity of a model. This paper proposes complimentary modelling and use of cognition-based and physics-based models. To support ideation of solution to the trade-offs, TRIZ is applied. The proposed method is demonstrated and validated by the case study of Continuously Variable Transmission.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"345 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134050548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ASME Conference Presenter Attendance Policy and Archival Proceedings ASME会议主讲人出席政策和档案记录

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/detc2018-ns1a

引用次数: 0

Information Reuse to Accelerate Customized Product Slicing for Additive Manufacturing 信息重用加速增材制造的定制产品切片

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86205

Hang Ye, Tsz-Ho Kwok, Chi Zhou, Wenyao Xu

{"title":"Information Reuse to Accelerate Customized Product Slicing for Additive Manufacturing","authors":"Hang Ye, Tsz-Ho Kwok, Chi Zhou, Wenyao Xu","doi":"10.1115/DETC2018-86205","DOIUrl":"https://doi.org/10.1115/DETC2018-86205","url":null,"abstract":"Different from most traditional manufacturing processes, the productivity of additive manufacturing (AM) is independent of the geometric complexity from the object to be built. This characteristic opens up tremendous potentials to realize mass customization. However, the AM-specific parts, such as customized products, need to be represented by millions of triangle meshes. Moreover, a large number of sliced layers are needed with the increased resolution of AM machines. These together pose a fundamental challenge in slice generation. The slicing procedure for a single customized model can take tens of minutes or even hours to complete, and the time consumption becomes more prominent in the context of mass customization. We propose a new slicing paradigm which capitalizes upon the similarities among customized models, and it reuses information obtained from the template model slicing. The idea of information reuse is implemented at several different levels depending on variations between the customized model and the template model. Experimental results show that the proposed slicing paradigm can significantly reduce the time consumption on slicing process, and ultimately fulfill mass customization enabled by AM.","PeriodicalId":142043,"journal":{"name":"Volume 1A: 38th Computers and Information in Engineering Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130934932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Numerical Computation of the Discrete 2D Fourier Transform in Polar Coordinates 极坐标下离散二维傅里叶变换的数值计算

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-85616

Xueyang Yao, N. Baddour

引用次数: 0

Comparative Study of As-Built Geometric and Mechanical Properties of Additively Manufactured Ceramics 增材制造陶瓷成品几何与力学性能的比较研究

Volume 1A: 38th Computers and Information in Engineering Conference Pub Date : 2018-08-26 DOI: 10.1115/DETC2018-86017

J. Steuben, A. Iliopoulos, J. Michopoulos

引用次数: 0