查询词典 by design
- 与 by design 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.
文中对汽车碰撞安全性的设计理论和方法进行了归类和总结,其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等;重点介绍了碰撞有限元法的基本理论和有关算法,涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等,探讨了有限元计算中的材料模型参数获取技术,开发了相应的材料试验装置及材料模型参数反求软件,在此基础上进行了基本的碰撞仿真算例和试验对比研究;文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性,指出了设计薄壁吸能构件时需要考虑的几个主要影响因素,即焊点、壁厚、横截面和预变形等;在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究,提出了吸能转向机构和自适应安全气囊的仿真研究方法;文中最后探讨了整车碰撞性能的设计与改进方法,提出了以理想碰撞特性为目标,采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法,并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究,所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车,研究结果表明,本文所提出的设计与改进方法是适用而有效的,具有重要的工程实用意义和价值。
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The red chamber hot pot" the brand image system design take molds has the bright brand idea and the brand culture characteristic hot pot brand image as the design goal, in carries on scientifically, above the strict market survey foundation, proposed the brand localization, take this as the design idea, by the plane design method and the method, launches "the red chamber hot pot the brand vision image design.
红楼火锅"品牌形象系统设计以塑造具有鲜明品牌理念和品牌文化的特色火锅品牌形象为设计目标,在进行科学、严密的市场调查的基础之上,提出品牌定位,以此为设计理念,以平面设计的方法和手段,展开"红楼火锅的品牌视觉形象设计。
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The interval of seismic design results is obtained by considering the bound of uncertain design parameters and the reliability of designs by current seismic code and sensitivity of design results to the uncertain inputs can be checked with this method.
由该界限分析和设计方法可以得到设计结果的区间,从而可以评价确定性设计结果的可靠性和设计结果对输入不确定性参数的敏感性
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ShenzhenTechnology Co., Ltd., formerly known as Shenzhen City Days Micro Technology Co., Ltd., the company was founded in 2002 by the domestic integrated circuit industry to design and market high-level talent to create a joint venture, the company is located in Shenzhen National IC industry base, owned by more than thirty composed of management and technology development team, the company since its inception, mainly in integrated circuit design, sales and IC agents, program development for the core business of high-tech enterprises in Shenzhen are the industrialization of National IC Base The focus of incubator companies, with integrated circuit design, system integration experience.
深圳泰唐科技有限公司,原名为深圳市天微科技有限公司,本公司成立于二零零二年,由国内集成电路行业设计及市场的高级人才合资创建,公司位于国家集成电路深圳产业化基地,拥有由三十多人组成的经营管理与技术开发团队,公司自成立以来,主要以集成电路设计、销售及 IC 代理、方案开发为核心业务的高新科技企业,是国家集成电路深圳产业化基地的重点孵化企业,具有集成电路设计、系统集成的丰富经验。
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The information integrated pattern based on PDM/PLM in the course ofmanufacture is put forward. Under the constraints of building CAPP platform, thearchitecture of CAPP platform is established. The models of decision making andfunction for process planning are given. Then the development means of CAPP basedSmarTeam are extracted.3. The structure of modular product life cycle is established. Toward the divisionand planning of the General Modules oriented product family, theCAD/CAPP integrated model of flexible module based on feature and CAD/CAPPmapping model based on process planning match board are set up. The keytechnologies of Solidworks/SmarTeam/CAPP integration are studies.4. From the point of view of process match board and step match board, theprocess of creating to process planning match board is studied. As an example, themachining process planning of up beam of hydraulic press machines is used tointroduce the establishment of process planning match board by means of inferencebased on expert knowledge. The organize model about the process planning matchboard oriented product family is brought forward.5. The multi-decision methods of CAPP system based on analytic hierarchy aregiven.. On the basis of uniform data model, the sub-machining process planning ofpart is auto-created by means of analytic hierarchy, The step decision methods basedon AHP is put forward.6. For the design/manufacture information in the course of product life cycle, thetree structure based on Object-Oriented and static model based UML are founded. Themethod of establishing design/manufacture information management system isbrought forward. The commercial PLM software—SmarTeam is regarded asdevelopment platform, on basis of which, the design/manufacture informationmanagement system is built, and the multi-view mapping technique ofdesign/manufacture information model is studies.7. A computer-aided CAPP platform based on PDM/PLM is founded, and itsstructure, function, work flow is illustrated. Some example of the system areintroduced.
阐述课题提出的目的和意义,明确了本文研究的主要内容。2、提出基于PDM/PLM的制造过程信息化集成模式;在平台式CAPP系统的设计约束模型基础上,构建了平台式CAPP系统的体系结构;并给出工艺决策模型和功能模型;最后提出基于SmarTeam的CAPP开发模式和实现策略。3、建立模块化产品生命周期模型的组织结构;针对面向产品族的广义模块的划分和规划方法,建立基于特征的柔性模块CAD/CAPP集成模型及基于工艺模板的CAD/CAPP映射模型;研究Solidworks/SmarTeam/CAPP集成的关键技术。4、从工序模板和工步模板的角度研究了工艺模板的创建过程;以液压机上梁模块机加工为例,采用基于专家知识的推理技术实现了工艺模板的创成;提出了面向产品族的工艺模板分层结构树的组织模式。5、提出基于分层规划的多模式工艺决策流程;在统一数据模型的基础上,从特征层和零件层分层规划,实现了零件加工子工艺的自动创成;提出基于AHP的工步排序决策方法。6、针对产品生命周期中的设计/制造信息,建立了面向对象的类树结构和基于UML的静态结构模型;提出基于PDM/PLM软件的设计/制造信息管理系统的构建方法;以商品化PLM软件SmarTeam作为开发平台,开发了基于SmarTeam的设计/制造信息管理原型系统;研究设计/制造信息模型多视图映射机制。7、开发了基于PDM/PLM的平台式CAPP原型系统,构建了系统的功能模型,并对系统的主要功能进行说明,给出系统的运行实例。
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This dissertation introduces the whole scheme、the hardware electro circuit design and software design, the result of experiment on salinometer is preferred at the end of the dissertation. Salinometer is base on SOPC technology, and use digital technology to design circuit: the excitation source for balance bridge is generated by digital method, its shape、amplitude and frequency can be control by digital signal, the standard branch of bridge is composed of three digital-analog-conversion, and uses the method of successive approximation to regulate the balance of bridge.
盐度计以SOPC技术为基础,通过数字化方式设计测量电路:电桥的激励源由数字化方式产生,激励源的波形、幅值和频率等可由数字量控制;平衡电桥标准支路由3个数模转换器组合实现,测量时以逐次逼近的方式调整电桥的平衡度;检测电桥平衡度的高灵敏度数字检流计同样以数字化方式设计,它的增益由程序控制,将电桥的输出电压数字化,以软件判断电桥平衡度。
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The systemic design including hardware design and software design,is introduced in this paper.Analyse the reconfigurable capability and give a concretely circuit and appearance design. We design the test program of instrument and two working model about on-line working and off-line working.It is expedient to operate by friendly user-machine interface.
本文详细的介绍了该仪器的整体设计,分析了其重构性能,给出了该仪器的具体电路设计及外观设计,系统的设计了该仪器工作的测试程序,并且设计了联机和脱机两种工作方式,均具有友好的人机界面,方便用户的操作。
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To resolve the design difficulties caused by small cross-section, low height of the bridge structure, the key technique problem to the bridge structure should be carried on research and analysis, such as whole calculation model, considering foundation combined action , the reasonable rigidity match to the joint of the girder and pier ,inner force redistribution caused by the system conversion ,the forecast to long-term deformation after building , stress analysis and tectonic steel bar of the anchored serration block , the influence of foundation settlement and anti- earthquake measures . To acquire feasible and reasonable technique parameters and provide the full design basis, according to analytical results adjust and optimize the bridge structure design.
为解决桥梁结构要求截面小,高度低等带来的设计困难,需对该结构的关键技术问题如考虑基础共同作用的整体计算模型、梁墩间的合理刚度匹配、体系转换产生的内力重分布、成桥后的长期变形预测、锚下锯齿块应力分析及配筋构造、基础沉降影响及抗震措施等进行研究分析,以获得技术可行、经济合理的技术参数,为设计提供充分的依据,根据分析结果调整优化桥梁结构设计。
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I can complish a architecture design by myself and some expoad designs and construct plan.i can express my own design idea and plan by hand.i also can apply architecture design and plot software skilly.
能够手绘表达自己的设计思想以及方案设计。能够熟练的应用建筑设计及绘图软件。是在太感谢了能帮忙的朋友!
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It tells particularly the debris flow"s the encironment and the development characteristic by numbers . And according to its character , selecting the latest research results at present , the anthor calculates the debris flow"s the moving , dynamical characteristics and the scale , such as , the velocity of flow , the wallop , the peak value flux , and the total flux . And the anthor calculates density in different design frequency by the empirical formula method . In the text, the author uses the modle of evaluating a single gully to evaluate the risk of the debris flow . First , the author calculates the hazard degree in different design frequency , and forecasts the risk range of debris flow in Shenjia gully based on the maximum pile thickness and the total solid amount of a denbris flow . Then , on the basis of the risk range in different design frequency , the author carries out the damageability and risk assessment . The basic purpose of risk management is reducing risk or transferring risk , reducing the loss of life and property . The text constructs the system of risk management of debris flow in Shenjia gully , basis on the condition of Shenjia gully .
本文从地形地貌、地层岩性、地质构造、气象水文等方面系统地阐述了深家沟泥石流的发育环境及发育特征;分别从形成区、流通区、堆积区对深家沟流域特征进行描述;依据泥石流沟自身特点,选用现阶段最新的研究成果,推算了不同设计频率下的深家沟泥石流流速、峰值流量、总流量、冲击力等动力特征和规模数据;并且根据经验公式法来确定深家沟不同设计频率下的泥石流容重;本文采用单沟泥石流风险评价模型对深家沟泥石流进行风险评价,首先对不同的设计频率下的深家沟泥石流进行危险度评价,根据最大堆积厚度与一次泥石流冲出量来预测不同频率下的泥石流危险范围,然后,根据预测的评估范围,评价对应范围内的易损度,最后作出风险评价;城镇泥石流风险管理的根本目的是降低风险或转移风险,减少生命财产的损失,本论文根据泸定深家沟泥石流的具体情况,构建了深家沟泥石流风险管理体系。
- 相关中文对照歌词
- All By Design
- Failure By Design
- Dead By Design
- Difficult By Design
- Guilty By Design
- Disparity By Design
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。