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This paper presents an IFMC CAD model that consits of a geometry model and a material model, in which the geometry space acts as a base space and the material space acts as a bundle space. In this CAD model, the geometry model is based on the non-manifold model. In addition, a half-face data sturucture, which is derived from the half-edge data structure with the non-manifold feature of IFMC taken into account, is adopted to represent the geometry and topology information of the component.For the material model of IFMC, this paper focuses on the FGM component representation firstly and present a simplex-subdivision based CAD data exchange format, in which the material information is represented as a (n-1) simplex and material .distributing feature is represented by the interpolation on the simplex-subdivision. Based on those, a part-building orientation optimization algorithm and an adaptive slicing algorithm for FGM component are presented in the paper.For the IFMC material model, the IFMC material information representation is divided into a meso-scale and a macro-scale representation. In the meso-scale, a concept named parameterized periodic functional meso-structure is presented as a unique form to represent the FGM (the homogeneous materials are regarded as a special FGM), the composite and the functional meso-structure material. The model of PMS is a three-tuple that contains the space stateinformatation, the material parameter and the material meso-scale distribution feature. The macro-scale material information representation is similar to the FGM components by interpolation of the control parameter of the periodical functional meso-structure based on the simplex-subdivision.Through an example of manufacturing-oriented IFMC CAD data processing, it is proved that the IFMC CAD model and the material information representation and process method proposed in this paper can provide a reliable data support for IFMC digital concurrent design and manufacturing.

本文将理想材料零件CAD模型建立在以几何空间为底空间、以材料空间为丛空间的结构上,使用非流形几何模型作为理想材料零件几何拓扑模型的基础,并在半边数据结构基础上,针对理想材料零件的非流形特征局限内部边界上的特点,给出了一个半面数据结构来表述零件的几何拓扑信息;对于理想材料零件的材料模型,本文先从功能梯度材料零件的信息表述与CAD数据交换和处理入手,将材料信息表述为(n-1)维单纯形,然后通过对三维几何区域的单纯剖分,以插值的方式表述零件材料分布特征;在此基础上,根据功能梯度材料零件分层制造中对CAD数据处理的要求,给出了综合考虑零件几何特征与材料特征的生长方向优化算法和自适应切片算法;而对于文中所定义的理想材料零件,本文将其材料信息表述分解到细观和宏观两个尺度进行,首先给出了细观尺度上参数化的周期性功能细结构概念,以此来统一表述功能梯度材料(单质材料作为特殊的功能梯度材料看待)、复合材料和功能细结构材料;把周期性功能细结构模型化为一个包含空间状态信息、材料构成参数和材料细观分布特征参数的三元组,以表达零件的细观材料特征;对于零件宏观的材料变化特征,则同样在几何区域单纯剖分的基础上,通过对细观尺度上周期性功能细结构控制参数的插值来完成;通过理想材料零件CAD数据处理的算例,验证了本文中理想材料零件CAD模型及材料信息表述与处理方法完全可以为理想材料零件的数字化制造提供可靠的数据支持。

Burckhardt's conception of the history and his view of the cultural history were comparatively reflected in it. At the same time, it set a good example for the cultural history. And Burchkhardt was accordingly regarded as "the founder of the cultural history".

这部著作比较全面地反映了布克哈特的史学思想和治史方法,是近代以来西方文化史研究的典范之作,布克哈特也因此被誉为文化史研究的奠基人。

If the need arises by reason of the requirements of society then they will be regarded as being of private

如果需要是社会的要求引发的,则开支就是个人或家庭性质的,不应减扣。

Taking customer domain for example, an ontology-based customer metadata model is build and formalized in description logics. Then two kinds of modes for customer information sharing are studied. The two modes are to construct a global c ustomer m etadata m odel w ithin a n e nterprise a nd t o c onstruct a mapping mechanism between customer metadata models located on different enterprises respectively. In the first mode, an information source is regarded as a 3-tuples, including a metadata model, a concept relation set and a resource data set.

然后从两个层面来探讨客户信息的共享机制:一是在企业内部创建统一的客户元数据模型,将信息源抽象成一个包含元数据模型、概念关系集、资源数据集的三元组,对概念关系的构成及获取方法进行分析,随后建立数据请求的模型,并相应地提出基于概念关系和基于术语相似度的两种答复模式。

Catenary algorithm is regarded as a theory which is much close to the truth in cableway design. But it's very inconvenient for the application of engineering because it belongs to surpass function, especially in the past when the computer is unpopular.

在架空索道的设计中,悬链线理论是人们公认的最接近真实情况的设计理论,但是由于悬链线函数属超越函数,计算上的困难使其在工程应用中极为不便,尤其在计算机不甚普及的过去。

So we believe that the HPV16-E6-targeted siRNA inhibits the proliferation of cervical cancer cells and induces the cell apoptosis, and the oncoprotein E6 encoded by the HPV gene may be regarded as a potential cadidate of important target molecule for gene therapy.

因此,我们认为HPV编码的癌蛋白E6可能为靶向基因治疗的潜在关键分子靶标;靶向HPV16-E6的siRNA能够抑制宫颈癌细胞增殖诱导细胞凋亡,从而为HPV16-E6这一重要的致瘤蛋白的功能研究开辟了一个新的途径,为HPV16-E6阳性肿瘤的靶向基因治疗提供了新的实验依据;为临床HPV感染及宫颈癌治疗探索新方法。

Mercury is regarded as the most toxic element, and then is the cadmium, lead and other elements.

在常见的金属中,汞被认为是毒性最强的金属,其次是镉、铅和其他金属。

Back to Song Dynasty, People started to play a game called Cajun, which is regarded as the origin of Ancient football.

上溯到宋朝,人们就开始玩一种叫蹴鞠的游戏,这就是古老足球的起始,那么现在您就了解为什么今天中国女子足球队踢得那么好了。

A general-purpose computer is regarded less as an electric calculating machine than as a capable assistant to human beings.

通用电子计算机,与其说是电动计算器,不如说是人的得力助手。

Caledonian University is rightly regarded as an extremely welcoming and friendly place in which to study.

喀里多尼亚大学是正确视为一个极其欢迎和友好的地方来学习。

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推荐网络例句

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。