Volume 3B: 47th Design Automation Conference (DAC)最新文献_第2页

Design Concept Generation With Variational Deep Embedding Over Comprehensive Optimization 基于变分深度嵌入的综合优化设计概念生成

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-69544

K. Fujita, K. Minowa, Yutaka Nomaguchi, S. Yamasaki, K. Yaji

{"title":"Design Concept Generation With Variational Deep Embedding Over Comprehensive Optimization","authors":"K. Fujita, K. Minowa, Yutaka Nomaguchi, S. Yamasaki, K. Yaji","doi":"10.1115/detc2021-69544","DOIUrl":"https://doi.org/10.1115/detc2021-69544","url":null,"abstract":"\u0000 This paper proposes a framework for generating design concepts through the loop of comprehensive exploitation and consequent exploration. The former is by any sophisticated optimization such as topology optimization with diversely different. The latter realization is due to the variational deep embedding (VaDE), a deep learning technique with classification capability. In the process of design concept generation first, exploitation through computational optimization generates various possibilities of design entities. Second, VaDE learns them. This learning encodes the clusters of similar entities over the latent space with smaller dimensions. The clustering result reveals some design concepts and identifies voids where as-yet-unrecognized design concepts are prospective. Third, the decoder of the learned VaDE generates some possibilities for new design entities. Forth such new entities are examined, and relevant new conditions will trigger further exploitation by the optimization. In this paper, this framework is implemented for and applied to the conceptual design problem of bridge structures. This application demonstrates that the framework can identify voids over the latent space and explore the possibility of new concepts. This paper brings up some discussion on the promises and possibilities of the proposed framework.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124415754","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: 6

Design of Four-Patch Multi-Stable Composite Laminates for Shape Morphing Applications 用于形状变形应用的四贴片多稳定复合材料层压板设计

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-67884

Jebin Biju, G. Fadel, Suyi Li, O. Myers

{"title":"Design of Four-Patch Multi-Stable Composite Laminates for Shape Morphing Applications","authors":"Jebin Biju, G. Fadel, Suyi Li, O. Myers","doi":"10.1115/detc2021-67884","DOIUrl":"https://doi.org/10.1115/detc2021-67884","url":null,"abstract":"\u0000 Thin bistable composite laminates can be used for shape morphing applications by virtue of their material properties and asymmetric ply layup. These laminates are called bistable because they can be snapped into two or more stable shapes. A single bistable patch can result in simple cylindrical shapes and when multiple such patches are assembled into a single multi-patch laminate they result in more complex shapes and multiple stable shapes that can find wide practical use in shape morphing applications. Analytical models exist that can approximate the stable shapes of the laminates from the input of material properties and laminate geometry. And these models correlate with FEA and experiment to a satisfactory degree and could be used for the design of multi patch laminates. In this research, we make use of these analytical models that solve for a four-patch grid laminate and create a design method based on optimization to solve the reverse problem to arrive at the laminate parameters given the target shape(s). Two approaches are presented wherein one targets a single stable shape and the other targets two stable shapes which are the shapes before and after snap through. This work would be useful to understand how multi-patch laminates could be designed using optimization.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115447620","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

Reliability-Based Mission Planning of Off-Road Autonomous Ground Vehicles Using an Outcrossing Approach 基于可靠性的越野自主地面车辆任务规划

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-67887

Chen Jiang, Yixuan Liu, Zhen Hu, Z. Mourelatos, D. Gorsich, Yan Fu

{"title":"Reliability-Based Mission Planning of Off-Road Autonomous Ground Vehicles Using an Outcrossing Approach","authors":"Chen Jiang, Yixuan Liu, Zhen Hu, Z. Mourelatos, D. Gorsich, Yan Fu","doi":"10.1115/detc2021-67887","DOIUrl":"https://doi.org/10.1115/detc2021-67887","url":null,"abstract":"\u0000 Reliability-based mission planning aims to identify an optimal path for off-road autonomous ground vehicles (AGVs) under uncertain terrain environment, while satisfying specific mission mobility reliability (MMR) constraints. The evaluation of MMR during path planning poses computational challenges for practical applications. This paper presents an efficient reliability-based mission planning using an outcrossing approach that has the same computational complexity as deterministic mission planning. A Gaussian random field is employed to represent the spatially dependent uncertainty sources in the terrain environment. The latter are then used in conjunction with a vehicle mobility model to generate a stochastic mobility map. Based on the stochastic mobility map, outcrossing rate maps are generated using the outcrossing concept which is widely used in time-dependent reliability. Integration of the outcrossing rate map with a rapidly-exploring random tree (RRT*) algorithm, allows for efficient path planning of AGVs subject to MMR constraints. A reliable RRT* algorithm using the outcrossing approach (RRT*-OC) is developed to implement the proposed efficient reliability-based mission planning. Results of a case study verify the accuracy and efficiency of the proposed algorithm.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128041968","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

Connecting Qualitative and Quantitative Analysis Through Bond Graph Modeling and System Dynamics 通过键合图建模和系统动力学连接定性和定量分析

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-70796

Hailie Suk, John Hall

{"title":"Connecting Qualitative and Quantitative Analysis Through Bond Graph Modeling and System Dynamics","authors":"Hailie Suk, John Hall","doi":"10.1115/detc2021-70796","DOIUrl":"https://doi.org/10.1115/detc2021-70796","url":null,"abstract":"\u0000 Access to resources can contribute to social progress in extremely impoverished communities. The introduction of cyber-physical systems for electricity, water, and irrigation facilitates greater fulfillment of needs. Yet, the availability of resources may be inconsistent or lacking. The social dynamics of the community can provide insight into how the available resources support well-being. Thus, the cyber-physical system requires the addition of a social consideration to become cyber-physical-social systems. However, the social considerations typically include qualitative parameters. This prompts the need for integrating qualitative and quantitative information.\u0000 In this paper, we present a method for mathematically representing qualitative and quantitative relationships. This is achieved by connecting Bond Graph Modeling and System Dynamics. The Bond Graph model is used to mathematically represent relationships between qualitative and quantitative elements. These relationships are used in the System Dynamics analysis. The method is anchored in expanding cyber-physical to cyber-physical-social systems through incorporating both qualitative and quantitative information in the systems analysis.\u0000 The mathematical connectivity of qualitative and quantitative information is a key feature of this approach. A test problem in resource allocation is used to demonstrate the function and flexibility of the method. This is anchored in connecting qualitative and quantitative information in the analysis.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132475383","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

A Novel Method for Calculating the Parametric Hypervolume Indicator 一种计算参数化超卷指标的新方法

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-66751

Jonathan M. Weaver-Rosen, R. Malak

{"title":"A Novel Method for Calculating the Parametric Hypervolume Indicator","authors":"Jonathan M. Weaver-Rosen, R. Malak","doi":"10.1115/detc2021-66751","DOIUrl":"https://doi.org/10.1115/detc2021-66751","url":null,"abstract":"\u0000 This paper presents a new methodology for calculating the hypervolume indicator (HVI)for multi-objective and parametric data. Existing multi-objective HVI calculation techniques cannot be directly used for parametric data because designers do not have preferences for parameters like they do for objectives. The novel method presented herein allows for the consideration of both objectives and parameters through the newly introduced hypercone heuristic (HCH). This heuristic relaxes the strict rules of parametric Pareto dominance for a more practical dominance assessment when comparing designs of differing parameter values without violating Pareto dominance rules. A parametric HVI (pHVI) enhances a design engineer’s toolkit by enabling both online and offline evaluation of parametric optimization results. The pHVI measure allows designers to compare solution sets, detect optimization convergence, and to better inform optimization procedures in a parametric context. Results show that the HCH-based pHVI yields a similar quality measure to the existing technique based on a support vector domain description (SVDD) in a fraction of the computational time. Furthermore, the novel HCH-based pHVI technique satisfies multi-objective HVI properties allowing previous applications of the HVI to be applied to multi-objective parametric optimization. This contribution enables the field of parametric optimization, and thus parametric design, to benefit from prior and future advances in the multi-objective optimization domain involving the HVI.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"1994 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128638393","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

Shared Autonomous Vehicle System Design for Battery Electric Vehicle (BEV) and Fuel Cell Electric Vehicle (FCEV) 纯电动汽车(BEV)和燃料电池汽车(FCEV)共享自动驾驶汽车系统设计

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-67734

Ungki Lee, S. Jeon, Ikjin Lee

{"title":"Shared Autonomous Vehicle System Design for Battery Electric Vehicle (BEV) and Fuel Cell Electric Vehicle (FCEV)","authors":"Ungki Lee, S. Jeon, Ikjin Lee","doi":"10.1115/detc2021-67734","DOIUrl":"https://doi.org/10.1115/detc2021-67734","url":null,"abstract":"\u0000 Shared autonomous vehicles (SAVs) encompassing autonomous driving technology and car-sharing service are expected to become an essential part of transportation system in the near future. Although many studies related to SAV system design and optimization have been conducted, most of them are focused on shared autonomous battery electric vehicle (SABEV) systems, which employ battery electric vehicles (BEVs) as SAVs. As fuel cell electric vehicles (FCEVs) emerge as alternative fuel vehicles along with BEVs, the need for research on shared autonomous fuel cell electric vehicle (SAFCEV) systems employing FCEVs as SAVs is increasing. Therefore, this study newly presents a design framework of SAFCEV system by developing an SAFCEV design model based on a proton-exchange membrane fuel cell (PEMFC) model. The test bed for SAV system design is Seoul, and optimization is conducted for SABEV and SAFCEV systems to minimize the total cost while satisfying the customer wait time constraint, and the optimization results of both systems are compared. From the results, it is verified that the SAFCEV system is feasible and the total cost of the SAFCEV system is even lower compared to the SABEV system. In addition, several observations on various operating environments of SABEV and SAFCEV systems are obtained from parametric studies.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123452852","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

An Enhanced Squared Exponential Kernel With Manhattan Similarity Measure for High Dimensional Gaussian Process Models 高维高斯过程模型的增强平方指数核与曼哈顿相似测度

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-71445

Yanwen Xu, Pingfeng Wang

{"title":"An Enhanced Squared Exponential Kernel With Manhattan Similarity Measure for High Dimensional Gaussian Process Models","authors":"Yanwen Xu, Pingfeng Wang","doi":"10.1115/detc2021-71445","DOIUrl":"https://doi.org/10.1115/detc2021-71445","url":null,"abstract":"\u0000 The Gaussian Process (GP) model has become one of the most popular methods and exhibits superior performance among surrogate models in many engineering design applications. However, the standard Gaussian process model is not able to deal with high dimensional applications. The root of the problem comes from the similarity measurements of the GP model that relies on the Euclidean distance, which becomes uninformative in the high-dimensional cases, and causes accuracy and efficiency issues. Limited studies explore this issue. In this study, thereby, we propose an enhanced squared exponential kernel using Manhattan distance that is more effective at preserving the meaningfulness of proximity measures and preferred to be used in the GP model for high-dimensional cases. The experiments show that the proposed approach has obtained a superior performance in high-dimensional problems. Based on the analysis and experimental results of similarity metrics, a guide to choosing the desirable similarity measures which result in the most accurate and efficient results for the Kriging model with respect to different sample sizes and dimension levels is provided in this paper.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125316753","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

Reliability-Informed Economic and Energy Evaluation for Design for Remanufacturing: A Case Study on a Hydraulic Manifold 基于可靠性的再制造设计经济与能源评价:以液压歧管为例

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-67996

V. Nemani, Jinqiang Liu, Navaid Ahmed, Adam Cartwright, G. Kremer, Chao Hu

{"title":"Reliability-Informed Economic and Energy Evaluation for Design for Remanufacturing: A Case Study on a Hydraulic Manifold","authors":"V. Nemani, Jinqiang Liu, Navaid Ahmed, Adam Cartwright, G. Kremer, Chao Hu","doi":"10.1115/detc2021-67996","DOIUrl":"https://doi.org/10.1115/detc2021-67996","url":null,"abstract":"\u0000 Design for Remanufacturing (DfRem) is an attractive approach for sustainable product development. Evaluation of DfRem strategies, from both economic and environmental perspectives, at an early design stage can allow the designers to make informed decisions when choosing the best design option. Studying the long-term implications of a particular design scenario requires quantifying the benefits of remanufacturing for multiple life cycles while considering the reliability of the product. In addition to comparing designs on a one-to-one basis, we find that including reliability provides a different insight into comparing design strategies. We present a reliability-informed cost and energy analysis framework that accounts for product reliability for multiple remanufacturing cycles within a certain warranty policy. The variation of reuse rate over successive remanufacturing cycles is formulated using a branched power-law model which provides probabilistic scenarios of reusing or replacing with new units. To demonstrate the utility of this framework, we use the case study of a hydraulic manifold, which is a component of a transmission used in some agricultural equipment, and use real-world field reliability data to quantify the transmission’s reliability. Three design improvement changes are proposed for the manifold and we quantify the costs and energy consumption associated with each of the design changes for multiple remanufacturing cycles.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122409522","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

Leveraging Design Heuristics for Multi-Objective Metamaterial Design Optimization 利用设计启发式进行多目标超材料设计优化

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-71226

Roshan Suresh Kumar, Srikar Srivatsa, M. Silberstein, Daniel Selva

{"title":"Leveraging Design Heuristics for Multi-Objective Metamaterial Design Optimization","authors":"Roshan Suresh Kumar, Srikar Srivatsa, M. Silberstein, Daniel Selva","doi":"10.1115/detc2021-71226","DOIUrl":"https://doi.org/10.1115/detc2021-71226","url":null,"abstract":"\u0000 Design optimization of metamaterials and other complex systems often relies on the use of computationally expensive models. This makes it challenging to use global multi-objective optimization approaches that require many function evaluations. Engineers often have heuristics or rules of thumb with potential to drastically reduce the number of function evaluations needed to achieve good convergence. Recent research has demonstrated that these design heuristics can be used explicitly in design optimization, indeed leading to accelerated convergence. However, these approaches have only been demonstrated on specific problems, the performance of different methods was diverse, and despite all heuristics being “correct”, some heuristics were found to perform much better than others for various problems. In this paper, we describe a case study in design heuristics for a simple class of 2D constrained multiobjective optimization problems involving lattice-based metamaterial design. Design heuristics are strategically incorporated into the design search and the heuristics-enabled optimization framework is compared with the standard optimization framework not using the heuristics. Results indicate that leveraging design heuristics for design optimization can help in reaching the optimal designs faster. We also identify some guidelines to help designers choose design heuristics and methods to incorporate them for a given problem at hand.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130681960","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

Combinatorial Optimization of Pre-Formed Hose Assemblies 预成型软管组件的组合优化

Volume 3B: 47th Design Automation Conference (DAC) Pub Date : 2021-08-17 DOI: 10.1115/detc2021-71408

E. Gustafsson, Johan Persson, M. Tarkian

{"title":"Combinatorial Optimization of Pre-Formed Hose Assemblies","authors":"E. Gustafsson, Johan Persson, M. Tarkian","doi":"10.1115/detc2021-71408","DOIUrl":"https://doi.org/10.1115/detc2021-71408","url":null,"abstract":"\u0000 Cable and hose routing is a complex and time-consuming process that often involves several conflicting objectives. Complexity increases further when routes of multiple components are to be considered through the same space. Extensive work has been done in the area of automatic routing where few proposals optimize multiple hoses together. This paper proposes a framework for the routing of multiple pre-formed hoses in an assembly using a unique permutation process where several alternatives for each hose are generated. A combinatorial optimization process is then used to find Pareto-optimal solutions for the multi-route assembly. This is coupled with a scoring model that predicts the overall fitness of a solution based on designs previously scored by the engineer as well as an evaluation system where the engineer can score new designs found through the use of the framework to update the scoring model. The framework is evaluated using a testcase from a car manufacturer showing a severalfold time reduction compared to a strictly manual process. Considering the time savings, the proposed framework has the potential to greatly reduce the overall routing processes of hoses and cables.","PeriodicalId":299235,"journal":{"name":"Volume 3B: 47th Design Automation Conference (DAC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114184847","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