摘要：The current development of precision plastic injection molding machines mainly focuses on how to save material and improve precision, but the two aims contradict each other. For a clamp unit, clamping precision improving depends on the design quality of the stationary platen. Compared with the parametric design of stationary platen, structural scheme design could obtain the optimization model with double objectives and multi-constraints. In this paper, a SE-160 precision plastic injection molding machine with 1600 kN clamping force is selected as the subject in the case study. During the motion of mold closing and opening, the stationary platen of SE-160 is subjected to a cyclic loading, which would cause the fatigue rupture of the tie bars in periodically long term operations. In order to reduce the deflection of the stationary platen, the FEA method is introduced to optimize the structure of the stationary platen. Firstly, an optimal topology model is established by variable density method. Then, structural topology optimizations of the stationary platen are done with the removable material from 50%, 60% to 70%. Secondly, the other two recommended optimization schemes are given and compared with the original structure. The result of performances comparison shows that the scheme II of the platen is the best one. By choosing the best alternative, the volume and the local maximal stress of the platen could be decreased, corresponding to cost-saving material and better mechanical properties. This paper proposes a structural optimization design scheme, which can save the material as well as improve the clamping precision of the precision plastic injection molding machine.

摘要：The product configuration modeling is a key technology to realize configuration design. Most of the researches were mainly conducted focusing on how to establish a product configuration model, but were short of the consideration about the application scope and dynamic change features. In this paper, the reconfigurable modeling technology of similar-structure products configuration design is studied to enhance the generality and diversity of product configuration models, and to facilitate the dynamic upgrade of configuration models. The configuration components of products with similar structures are divided into sharable configuration components, essential configuration components and optional configuration components, so the construction of reconfigurable model of configuration design can be converted into the set operation of configuration components. The horizontal adjusting reconstruction of configuration model is carried out through the adding, replacing and deleting of configuration components, the vertical adjusting reconstruction of configuration model is carried out through the parametric deformation of configuration components, and the variable topological configuration model reconstruction can be realized through the transformation of partial structure of configuration components. Finally, NC machine products are used as an example to analyze and verify the reconfigurable modeling technology of products with similar structures. The speed of NC machine configuration design is found to be improved, and the number of NC machine configuration design models is decreased. And the reconfigurable design system of NC machine products is developed. The proposed modeling technology provides references for the processes, methods and steps of model reconstruction.

摘要：The current research of configurable product design mainly focuses on how to convert a predefined set of components into a valid set of product structures. With the scale and complexity of configurable products increasing, the interdependencies between customer demands and product structures grow up as well. The result is that existing product structures fails to satisfy the individual customer requirements and hence product variants are needed. This paper is aimed to build a bridge between customer demands and product structures in order to make demand-driven fast response design feasible. First of all, multi-hierarchical models of configurable product design are established with customer demand model, technical requirement model and product structure model. Then, the transition of multi-hierarchical models among customer demand model, technical requirement model and product structure model is solved with fuzzy analytic hierarchy process （FAHP） and the algorithm of multi-level matching. Finally, optimal structure according to the customer demands is obtained with the calculation of Euclidean distance and similarity of some cases. In practice, the configuration design of a clamping unit of injection molding machine successfully performs an optimal search strategy for the product variants with reasonable satisfaction to individual customer demands. The proposed method can automatically generate a configuration design with better alternatives for each product structures, and shorten the time of finding the configuration of a product.

摘要：新媒体艺术设计是信息技术快速发展和艺术相结合的产物,对其形式特征、美学理论和知识结构的研究是这个学科发展的重要环节。为了解决新媒体艺术设计面临的学科基础理论薄弱,产业发展瓶颈等问题,通过调研相关产业,分析最新的前沿研究成果,并结合长期实践,得出新媒体艺术设计只有解决好学科的传承与创新,以及人才的培养平台才能得到高效快速的发展。

摘要：为实现产品性能驱动的快速响应设计,通过多变量建立结构变异与仿真分析的耦合关联,集成结构变异与仿真分析异构系统。结构变异是移植结构与基型结构的拓扑搭接,通过多级特征的更改,保留结构变异过程中的多变量。由主成分分析法提取耦合设计变量,建立结构变异与仿真分析的多变量耦合模型,并在此基础上进行求解,实现结构变异与仿真分析的多变量传递与反馈。开发了集成结构变异与仿真分析的先进设计平台,并在精密塑料注射成型装备的设计开发中得到应用。

摘要：为了实现需求驱动的结构变异设计，提出了多粒度移植结构的划分与再生技术。结构变异设计是在现有零件基础上移植多粒度结构，改变零件的拓扑关系，移植结构库的构建是复杂零件结构变异设计的基础。针对多粒度移植结构库中大量的移植结构，引入变精度粗糙集，以知识为载体储存移植结构的属性信息，通过变精度粗糙集对知识粒度进行划分，从而实现多粒度移植结构的划分与再生，为复杂零件的变异设计提供基础。结合注塑机产品的结构变异设计，构建了注塑机产品的多粒度移植结构库。

摘要：目前产品配置设计主要是标准模块基础上的功能实现,针对模糊型复杂产品的配置问题,将模糊多属性决策理论引入到配置设计方法中。考虑客户主观不确定偏好,通过模糊需求的知识获取以及模糊需求与产品属性间的描述,实现客户模糊需求到配置需求的非线性映射。将配置需求作为复杂产品模糊层次配置的输入,通过非标准模块的相似性标识和模糊层次配置的求解,实现复杂产品模糊层次配置设计,模糊层次配置的输出为配置方案集。利用神经网络技术建立模糊多属性决策的配置方案评价模型,对配置方案集进行比较和排序,优选出最接近客户满意的配置结果。结合注塑机产品的配置设计,分析客户需求的模糊、不足和冗余问题,在第一层精确配置和第二层模糊相似配置的基础上,获得四个配置方案集,通过模糊神经网络的多属性决策模型,求解最优方案,并开发了注塑机配置设计系统。

摘要：文化遗产的数字化为文化遗产的保护、传承和发展提供了新的思路,利用计算机辅助设计和数字化方法将文化遗产进行数字化转换,基于三维扫描仪获取文物点云数据,建立了文物点云数据精简模型,研究了文物三维模型重建方法,构建了文物三维模型的纹理映射机制,给出基于Web技术的文物虚拟展示方案,构建了文物数字化技术路线,最后结合青铜牛尊案例对所研究的关键技术进行说明。

摘要：在单螺杆泵转子和定子是刚性接触的假设前提下,以短幅内摆线线型理论为基础,建立多元变量多目标函数的双头单螺杆泵短幅内摆线线型优化的数学模型。利用数值积分法对目标函数的复杂积分进行处理,求出变幅系数k在不同取值范围内的复杂积分拟合方程,确定约束条件,简化了线型优化的数学模型。采用复合形法对该数学模型进行优化,可计算出优化范围内各点的几何参数。结果显示,当变幅系数k=0.5、等距线半径趋于无穷大时线型结果最好。将优化结果应用在双头单螺杆泵的线型设计中,计算出线型各点绕中心做螺旋运动时空间位置坐标,利用OpenGL技术建立双头单螺杆泵短幅内摆线线型的参数化运动仿真模型,实现优化设计与运动仿真相结合,为多头单螺杆泵线型理论的深入研究提供一个可视化的操作平台。

摘要：矿山设备种类繁多,数量庞大,对其备件的管理日趋重要。针对矿山设备备件库存管理系统设计中的库存管理工作流程、库存管理的主要内容进行了分析,可为煤矿企业备件库存管理系统的设计开发提供参考。