张开兴,刘洪豪,李金凤,杭晟煜,刘贤喜,宋正河.基于草图的产品三维CAD模型概念设计推送方法[J].农业机械学报,2019,50(2):365-372.
ZHANG Kaixing,LIU Honghao,LI Jinfeng,HANG Shengyu,LIU Xianxi,SONG Zhenghe.Conceptual Design Push Method of 3D CAD Models Based on Sketches[J].Transactions of the Chinese Society for Agricultural Machinery,2019,50(2):365-372.
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基于草图的产品三维CAD模型概念设计推送方法   [下载全文]
Conceptual Design Push Method of 3D CAD Models Based on Sketches   [Download Pdf][in English]
投稿时间:2018-08-30  
DOI:10.6041/j.issn.1000-1298.2019.02.042
中文关键词:  概念设计  三视草图  球面调和描述子  设计资源推送
基金项目:国家重点研发计划项目(2017YFD0700100)、山东省重点研发计划项目(2017NC212008)、山东省“双一流”奖补资金项目(SYL2017XTTD14)和山东省现代农业产业技术体系水稻创新团队项目
作者单位
张开兴 山东农业大学 
刘洪豪 山东农业大学 
李金凤 山东农业大学 
杭晟煜 山东农业大学 
刘贤喜 山东农业大学 
宋正河 中国农业大学 
中文摘要:针对产品广义设计过程不同阶段的需求特点以及加快概念设计向详细设计的转换,提出了一种基于草图的产品三维CAD模型概念设计推送方法。首先,用户根据概念设计需求,利用基于CAD几何造型平台开发的手绘图板绘制三视草图;然后,对手绘三视草图和模型库中 CAD模型投影得到的三视投影图提取特征信息,采用2.5D球面调和描述子来表示草图特征信息;最后,利用Euclidean距离计算通过球面调和变换获得的图形特征向量之间的距离,从而实现模型之间的相似性评价,并在农业机械装备模型库中完成算法的验证。实验结果表明,该方法能够有效帮助用户快速地具象化查询意图,发掘与产品概念设计阶段意图最相符的三维模型,并将相似性设计资源推送给设计人员,进而参考、启发和扩展设计思维,实现产品概念设计的快速响应。
ZHANG Kaixing  LIU Honghao  LI Jinfeng  HANG Shengyu  LIU Xianxi  SONG Zhenghe
Shandong Agricultural University,Shandong Agricultural University,Shandong Agricultural University,Shandong Agricultural University,Shandong Agricultural University and China Agricultural University
Key Words:conceptual design  three-view sketch  spherical harmonic descriptors  design resource push
Abstract:According to the requirements characteristics at different stages of generalized product design process and acceleration of the transformation from conceptual design to detailed design, a method of conceptual design push of 3D CAD model of products based on sketch was proposed. First of all, according to the conceptual design requirements, a three-view sketch was drawn by using a hand drawing board based on CAD geometric modeling platform. Then, feature information was extracted from hand-drawn three-view sketch and three-view projection diagram of CAD model projection in model library, and the 2.5D spherical harmonic descriptor was used to represent the sketch feature information. Finally, Euclidean distance was used to calculate the distance of the graph feature vectors obtained by spherical harmonic transformation to realize the similarity evaluation between models and verify the algorithm in the agricultural machinery equipment model database. The experimental results showed that the method can effectively help users visualize the query intention quickly, explore the 3D model which was most consistent with the intention of product conceptual design stage, and push the similar design resources to designers, so as to reference, inspire and expand the design thinking and realize the rapid response of product conceptual design.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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