摘要：The dynamic and consistent information association among vtrious application activities in the full life cycle of a product is a key to the assurance of the cooperation among different application domains. In order to establish and maintain the association, a design-process-based product association model was proposed. This model takes advantage of the generic naming mechanism, the private protocol for history-based form feature modeling, on which the Data Association Protocol is built. Hence the model can provide the way of constructing and maintaining the information linkage among different product developing stages naturally and dynamically while keeping the privacy of the feature coding. A case study illustrates the utilities of the model in the data linking between design model and process planning model.

摘要：In complex engineering optimization, multilevel or two-level approaches are often applied. These approaches are carried out in assumption that there are no connections among sub problems at the same level. But it is difficult to construct the models that suit to this assumption. In recent years, the complexity of engineering systems has led to the rapid development in the field of Multidisciplinary Design Optimization (MDO). In MDO, two kinds of coupled factors, coupled variables (or functions) and system (or global) variables, always exist among all disciplines. These variable5 or functions make it disordered to solve the whole system. So, how to handle these variables is one of important studies in MDO. In this paper two approaches are discussed for handling these coupled factors in non-hierarchic system in MDO. And a test engineering example gives a demonstration about the implemeniation of these approaches.

摘要：Reinforcement detail drawings are one important part of the design of hydraulic structures and the important basis of construction and management. However, the efficiency of the traditional creation of engineering drawings is very low and the workload is heavy. There is no satisfactory software for hydraulic engineering because of the irregularity and diversity of hydraulic structures' shape. An automatic generation system of reinforcement detail drawings for hydraulic structures is introduced. Its functions and modules are introduced first. The related technologies such as automatic driensioning are discussed in detail. At the end of the paper, an example is given.

摘要：应用数学描述方法 ,从理性的角度描述了机械产品概念设计过程模型 (功能—行为—结构—环境约束 )的各要素及其相互关系 提出了在产品任务书中析取功能信息的方法 ,建立了功能分解准则 ,利用优化算法创建了行为关系树与实现产品功能概念解的整个设计过程的形式化表达 最后 。

摘要：基于SIMP密度 刚度插值模型和移动渐近线方法,推导并建立了线弹性连续体结构刚度拓扑优化设计的数学模型 对中间密度材料进行研究,得出了惩罚因子的合理取值范围,分析了棋盘格式和网格依赖性等数值计算中存在的问题,并结合一种敏度过滤技术改善了这些问题 给出文中方法的程序流程,开发出二维结构的拓扑优化系统,通过一些经典的算例。

摘要：针对机械系统动态优化设计的工程问题，提出了一种新的人工智能优化方法——复合遗传算法。该方法在遗传算法的操作中增加改造操作，较大地提高了寻优效率。基于概率论完成了该方法更高效寻优机理的理论分析。数值分析结果表明，该方法结果正确，算法简洁。

摘要：以有限元法作为结构分析手段,建立金刚石六面顶压机的关键零部件———铰链梁的有限元力学模型和结构优化设计模型,在考虑疲劳强度的条件下,完成铰链梁的结构优化设计,为金刚石六面顶压机关键零部件的设计提供一套较为完整的设计方法和设计系统。同时,针对铰链梁的具体情况和特点,采用IGES数据交换标准,实现实体建模软件Pro E和有限元分析软件ANSYS之间的有效数据交换,形成一个较为有效、完整的铰链梁CAD(computeraideddesign)CAE(computeraidedengineering)集成设计系统,为CAD(computeraideddesign)CAE(computeraidedengineering)CAM(computeraid edmanufacture)系统集成研究提供有益的尝试。利用ANSYS的APDL参数化语言,编制铰链梁的结构优化设计程序ODPST,采用零阶优化方法进行铰链梁的结构优化设计,得到精确可靠的设计参数,有效提高铰链梁的抗疲劳性能和强度。

摘要：提出了基于结构整体柔度最小化和结构输出位移最大化的多目标拓扑优化设计方法,建立了微型柔性机构的多目标拓扑优化设计模型·提出了适用于微型柔性机构多目标拓扑优化设计的伴随矩阵敏度分析方法,并将广义收敛移动渐进算法用于多目标多约束微型柔性机构拓扑优化问题的求解·最后通过数值计算验证了优化模型的有效性·

摘要：以有限元法作为结构分析手段,建立了金刚石六面顶压机一种关键零部件的有限元力学模型和结构优化设计模型,在考虑疲劳强度的条件下,完成了该零部件的结构优化设计,为金刚石六面顶压机关键零部件的设计提供了一套较为完整的设计方法和设计系统。同时,采用IGES数据交换标准,实现了实体建模软件Pro/E和有限元分析软件ANSYS之间的有效数据交换,形成了一个较为有效、完整的CAD/CAE集成设计系统,为CAD/CAE/CAM系统集成的研究提供了一个有益的尝试。利用AN-SYS的APDL参数化语言,编制了该零部件的结构优化设计程序ODPST,得到了精确可靠的设计参数。

摘要：耦合关系的存在是复杂系统进行多学科设计优化产生困难的根本原因。为此 ,讨论了耦合因素的组成及影响关系 ,将耦合因素分为三类。根据全局灵敏度方程GSE(Globalsensitivityequations) ,对子系统之间耦合因素的性质进行分析 ,得到判断耦合因素是否为冗余的依据 ,并根据耦合性质的不同提出处理耦合因素的策略。给出一实例验证消除冗余耦合的效果。