查询词典 computer aided engineering

Computer Aided Engineering, 2002, 1: 8～12

计算机辅助工程， 2002， 1： 8～12

ABSTRACT Computer Aided Engineering is one of important research field.

计算机辅助工程是目前广泛研究的课题之一。

In this paper, the bump patterns for flip-chip packages are discussed first, then an experiment is setup to study the dispensing phenomena for different bump patterns, and the CAE software is used to analyze and identify with experiment mutually. From these thorough comparisons and analytical analysis, the existence of channel could slow down the flow, the high density of bump could speed up the flow, and it could avoid the air trap by modified the bump and channel's arrangement on flip-chip package. Then flows in rectangular microchannels driven by capillary force and gravity are discussed; furthermore, the theoretical model of flow in microchannel driven by capillary force and gravity is formulated from the Navier-Stokes equations.

本文首先针对覆晶底部充填进行相关理论推导、实验与模拟，探讨不同凸块配置模型所造成的波前不平滑现象对底部充填流动的影响；即依据相关参数建立模型进行底部充填实验，同时以CAE(Computer-Aided Engineering)模流分析软体进行模拟，在完成理论探讨、实验与模拟分析之后，交叉比较理论、实验与模拟分析结果，归纳出影响底胶充填流动之因素，由结果显示在凸块密集度较高的区域，凸块可以帮助流动，但是在凸块区后方的沟槽区域则因为凸块区所提供之流量不足，所以会造成波前落后的现象，另外藉由修改凸块与沟槽配置的关系，可以有效的控制波前形状的变化情形，避免产生包风现象。

Based on finite difference method and stereolithography file schema, the key techniques of mesh generation in foundry computer aided engineering system have been studied, including the technique for fast generating outlines of cross-section, the technique for handling error tolerance and the technique for rapidly generating mesh from cross-section.

基于有限差分法和标准模板库，研究铸造计算机辅助工程系统中的网格剖分关键技术，具体包括STL实体截面轮廓快速生成、容错处理，以及截面网格信息的快速提取等技术。

As an effective measure, the finite element method based Computer Aided Engineering technique can highly improve the success rate of design, shorten the research and development period of die and products.

基于有限元技术的计算机辅助工程（CAE，Computer AidedEngineering）技术作为一种有效的手段，能极大地提高设计的成功率，缩短模具和产品的研究和开发的周期。

A numerical human head model based on CT scan image of alive head of a Chinese has been developed using finite element method and computer-aided-engineering techniques.

该项目从计算生物力学着手，以有限元法和计算机辅助工程技术为手段，建立中国人的头部损伤生物力学的数字化头颅。

Referring to the optical rounded reflector of spherical surface used in a space remote sensor, a kind of flexible structure was designed for regulating thermal deformation. Theoretical analysis was done to its dynamic model and parameter of structure, and simulating analysis was also done to reflector module with technology of the Computer Aided Engineering in order to solve the status of high rigidity of structure and poor thermal stability of thermal dimension.

针对某空间光学遥感器的圆形球面反射镜设计了一温升变形调节柔性结构件，对其力学模型及柔节参数进行了理论分析，并采用计算机辅助工程分析技术对反射镜组件结构进行建模和仿真分析，以解决反射镜在力学环境下满足结构刚度要求，而热环境下面形精度显著超差的状况，使反射镜结构刚度满足力学要求的同时，具有良好的热尺寸稳定性，达到遥感器成像质量要求。

The application about neural networks used in process control is studied in light of auctorial engineering practice. Neural networks for process identification and control has been used in CAE2000 (a computer aided engineering software project) and the LN2000 which are developed by ourselves.

根据作者的工程实践，对神经网络在过程控制工程中的应用问题作了应用研究，包括在自主开发的控制系统计算机辅助设计CAE2000系统中的应用研究，以及在自主开发的分散控制系统LN2000中的应用研究。

This book amalgamates geometric modelling, analysis and optimization, the three important aspects in Computer Aided Engineering Design.

这本书结集在同一时期的几何模型，分析和优化，这三个重要的计算机辅助工程设计方面。

Computer aided engineering for sheet forming is an applied technique which puts the technique of numerical simulation of sheet forming in the core, and syncretizes all kinds technique such as CAD, CG and CAM. It supplies a powerful tool for die design and optimizing of sheet forming technics, such that CAE for sheet forming becomes the one of front research direction of forming technique in the world, and has large advancing potential.

板料成形计算机辅助工程是一个以基于有限元计算的板料成形数值模拟技术为核心，融合CAD、CG、CAM等各类技术于一体的应用技术，它为模具的研制和成形过程的优化提供了一个强有力的工具，是当前国际上成形技术研究的最前沿方向之一，并具有巨大的发展潜力。

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％。