汽车变速器CAE仿真与试验分析     

赖俊  梅自元 《清远职业技术学院学报》2020,(1):51-54

变速器作为汽车动力总成系统的关键部件,其功能的可靠、耐久的长短等性能直接影响到汽车的整体功能。CAE仿真与试验是变速箱性能验证的重要手段,通过结合设计阶段的CAE仿真与样件阶段的试验验证进行对比研究,能够使变速器在量产前完善设计,减少试验的样本量,从而实现缩短变速器设计周期和降低成本的目的。  相似文献   

低应变法检测桥梁嵌岩桩的评价     

瞿俊 《安徽职业技术学院学报》2004,3(4):17-19

用低应变法检测嵌岩桩 ,若桩底出现明显同相反射 ,多数因桩底缺陷引起。而区分是桩还是持力层的缺陷 ,主要看反射的起跳时间在 2 L/ C之前还是之后。当桩的变径及入岩反射对测试影响很大时 ,应进一步用钻芯法检验。  相似文献   

大型油船货油装卸仿真模拟装置的开发   总被引：1，自引：0，他引：1  

曾向明詹玉龙  张道兵 《上海海事大学学报》2006,27(1):5-8

运用计算机仿真技术和V isual C 软件设计工具,开发研制基于大型油船货油装卸系统的仿真模拟装置,以供教学与船员培训之用.探讨大型油船货油装卸仿真模拟装置的应用,介绍系统的结构以及软件的实现方法.  相似文献   

Steps Toward More Effective Implementation of the Standards for Educational and Psychological Testing     

Daniel Koretz 《Educational Measurement》2006,25(3):46-50

The goal of the Standards for Educational and Psychological Testing is to improve testing practices, but their impact on practice appears spotty. Self-regulation clearly fails in some instances. The establishment of an external agency to oversee testing practices and adherence to the Standards would face substantial hurdles, and the ambiguity of many of the Standards would hobble such an organization if one were created. Many of the Standards are general statements of principle, and past controversies make clear that we in the field often disagree about the reasons for them, their applicability to specific cases, and their practical meaning in specific contexts. This paper argues that the field should follow two approaches to lessen this ambiguity. First, using journals, conferences, and other vehicles, we should foster more frequent and more protracted debate about the practical meaning of key Standards, such as 13.6 and 13.7, which mandate that a decision that will have a "major impact" on a student should not be based on a single score. Second, future revisions of the Standards should use concrete examples of testing practices to clarify the meaning of the Standards, much as the legal system uses case law to clarify the meaning of the general principles embodied in statutes .  相似文献   

柴油机燃油喷射系统的仿真计算及分析     

虞金霞  胡先富 《上海海事大学学报》2001,22(2):11-14

较全面地分析了柴油机燃油喷射系统仿真计算的影响因素，给出了仿真计算的基本数学模型。研究并分析了传统和电控喷油系统仿真计算的特点，分析了现有计算模型的现状及部分缺陷，并就其发展提出了一些建议。  相似文献   

投篮质量评价标准建立及应用     

刘小湘 《体育科研》2002,23(3):29-30

分析按命中率评价投篮质量这一方法不利于运动队 (员 )之间投篮水平的变化及技战术水平发挥程度的比较。提出了将投篮按结果不同分为 A、B、C、D四级 ,用于定量分析投篮技术水平的新的投篮质量评价标准 ,介绍了新的投篮质量评价标准在 CBA决赛阶段的应用。  相似文献   

Dynamic Monte Carlo simulation of linear SAW polymer chain near a flat surface     

黄建花  韩世钧 《Journal of Zhejiang University. Science. B》2004,(6)

INTRODUCTION The conformational property of polymerchains subject to a geometrical constraint is one of themost interesting topics in polymer science (Milner,1991; Malfreyt and Tildesley, 2000; Vacatello,2001). The geometrical constraint can be a solidsurface, a liquid/liquid interface, a vacuum/liquidinterface, etc. So the topic has many applications intechnology such as adsorption onto interface, sta-bilization of colloids and partition equilibrium ingel permeation chromatography…  相似文献   

从事物特性的相互作用本质看运动生物力学研究方法与测试手段的发展     

王小虹  程湘南 《体育科研》2003,24(5):46-49

从任何事物的特性都是由相互作用相互联系的的事物双方共同决定的这一哲学原理来看,运动生物力学的研究方法和测试手段发展具有主动性,它能够从运动中的人体引申出这样或那样的特性来,能够引申出何种特性不仅取决于运动中的人体,也取决于研究方法和测试手段,从而推动运动生物力学学科的发展。  相似文献   

On Applicable Methods in Testing Spoken English     

Wang Bao 《当代文化与教育研究》2007,(12):37-40

The importance of raising speaking ability of the students is more and more emphasized. But the pity is that, until present time, teachers or testers have to face the perplexity of lacking useful ways to test the students about their ability in speaking. In order to break through the existing perplexity, the author tries, by analyzing the applicability of several methods for testing this ability, to shade a new light in this field, thus facilitate the means of daily teaching and learning evaluation.  相似文献   

武汉体育学院学生身体素质测试指标、方法和结果研究     

程序  程茜  马良宏 《武汉体育学院学报》2005,39(12):82-84

研究分析武汉体育学院学生身体素质测试指标、方法、过程与结果。结合体育院校学生特点,对学生身体素质指标进行了测试,并就选择学生身体素质测试的原则、依据、测试指标的构建和方法的确立等进行探讨。制订身体素质测试指标和评价标准,结果表明:学生身体素质测试指标与评价标准符合在校学生身体素质的实际,达到了预期的目的与效果。  相似文献