第九届全国机械设计年会征文通知

1　征文范围(1)设计综述 :现代设计技术的进展、先进设计理论与方法、现代设计与试验技术等。(2 )设计创新 :新产品开发、方案设计创新、机构设计创新、设计技术与过程技术的集成创新、试验技术创新等。(3 )设计与分析方法 :并行设计、虚拟设计、协同设计、网络设计、智能设计、集成设计、系统设计、先进的机械零部件设计、强度设计、动力学设计、可靠性设计、摩擦学设计、工业造型设计、设计评价、价值工程、模糊设计、反求设计、绿色设计、概念设计、可重构设计、优化设计、有限元分析、寿命估算和疲劳设计、防疲劳设计及技术、动态模拟与…     

混合驱动连杆机构的串行和并行设计

混合驱动机构的设计包括运动设计、动力设计和控制设计三个方面。一方面,这些设计相互影响和关联,具有非常强的耦合关系。另一方面,各个设计方面的设计准则、设计目标却有所差别。串行设计是先进行机构的运动设计、动力设计,最后再进行控制设计。并行设计是将机构的运动设计、动力设计和控制设计一并考虑进行设计。对于混合驱动平面五杆机构,分别采用串行设计和并行设计等不同的设计策略,尽管设计所采用的优化方法都是微分进化方法,但是设计结果却有所不同。串行设计可以达到较高的机构运动要求,但控制系统的设计比较困难,而且控制效果不好。并行设计得到的设计结果是机构的运动控制效果得以改善,但是设计的数学模型变得复杂,机构的运动精度有所下降。     

设计的哲学思考

探索设计哲学寻求设计普通规律,可以推动无所不在的设计向更全面更深入的发展。文中对设计在中华文明中重要地位,设计的普遍性,设计推动了人类文明发展,设计与创新相互依存,知识和创造性思维是设计的基石,设计的关键是设定目标提出计谋,设计的系统性,设计的统一性,设计是不断发展变化以及设计的价值性等10个问题进行了阐述,对于设计哲学内涵作了较为全面讨论,可以引起大家对设计科学的重视和推进设计科学的发展。     

书讯

本书结合作者多年的教学与科研经验,介绍了现代设计技术的主要内容,包括优化设计、有限单元法、可靠性设计等相对成熟的现代设计技术和虚拟设计、模糊设计、人工神经网络、绿色设计、并行设计、反求工程技术等现代设计技术的前沿。本书将现代设计基础理论、现代设计工具软件及工     

云制造环境下设计理性模型驱动的协同设计

设计服务化是协同设计的一个新方向。本文提出了一种云制造环境下设计理性模型驱动的协同设计方法。首先建立设计理性模型库,然后基于设计理性模型驱动协同设计,基于设计情境匹配设计服务,基于设计知识跨库检索多个知识库为设计活动提供知识融合服务。最后以ATM机的设计为例证明了此方法的可行性。     

产品设计过程的基因模型

针对产品设计过程的优化与重用,引入基因工程方法对设计过程进行表示与建模,提出设计过程基因碱基、碱基对和设计过程基因的概念;依据设计活动、设计对象、资源和设计团队4类设计过程基本元素,构造出设计活动碱基、设计对象碱基、设计团队/成员碱基和设计资源碱基4种设计过程碱基;分析了这些设计过程碱基的构成要素及其属性,建立了设计过程碱基的矩阵结构。     

基于实例的门机机构设计系统研究

常规设计过程即从中选出满足给定约束的子结构的设计,基于实例设计的设计突出特点在于将设计实例作为重要的设计依据,使得设计能从由相似势力形成的初始方案开始,一方面减少了设计中间过程和迭代次数,提高设计效率,另一方面更符合人的设计习惯.     

基于设计结构矩阵变更的设计过程动态规划

在分析传统设计结构矩阵的基础上,将设计结构矩阵扩展为动态设计结构矩阵和静态设计结构矩阵,动态设计结构矩阵连接了设计过程,静态设计结构矩阵用于设计过程的规划,通过映射来实现两者的连接.设计活动改变时,变更动态设计结构矩阵并映射到静态设计结构矩阵,对静态设计结构矩阵进行重构得到设计活动优化的执行序列并实现其动态规划.以某天文望远镜的关键部件设计过程为例,说明了该方法的可行性和实用性.     

轨道交通车辆内室的人性化设计

人性化设计思想着眼于人的需求,是对城市轨道交通车辆设计的新要求,而有效的设计管理则能确保人性化设计观念的落实。以高速列车内室设计为例,从设计观念导入、设计程序、设计实践及设计管理等几个层面对轨道交通车辆的人性化设计进行了研究,提出了高速列车人性化设计的原则,通过列车内室设计实践对该原则进行了应用和检验,并提出从宏观决策管理、人际沟通管理及微观设计管理3个层次持续有效地实现高速列车的人性化设计。     

《工业设计论坛与资讯》栏目论文投稿须知

<正>一、报道(征稿)范围1.设计理论与设计方法 (含产品创新方法 ;现代设计方法 ;设计思维;人机工程;设计心理;用户研究;工业设计流程与管理;设计评价与数理统计;感性工学设计;协同设计;并行设计;系统设计;模糊设计;优化设计;绿色设计;敏捷设计;智能设计;工业设计专家系统;设计知识与知识管理等,综述或专题论文均可)。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.