【英文标准名称】:Cylindricalhelicalspringsmadefromrectangularandsquaresectionwireandbar-Guidetocalculationanddesign-Torsionsprings
【原文标准名称】:矩形和方型线材和棒材制的圆柱形螺旋式弹簧.计算和设计指南.扭力弹簧
【标准号】:BS8726-2-2002
【标准状态】:现行
【国别】:英国
【发布日期】:2002-09-25
【实施或试行日期】:2002-09-25
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:设计计算;棒材;圆柱形;金属线;尺寸;设计;长方形;尺寸公差;弹簧;螺旋弹簧;扭矩;四方形;扁形
【英文主题词】:Bars(materials);Cylindricalshape;Design;Designcalculations;Dimensionaltolerances;Dimensions;Helicalsprings;Rectangularshape;Springs;Squareshape;Torque;Wires
【摘要】:ThisBritishStandardprovidesguidanceonthedesignofparallelsidedhelicaltorsionspringsmanufacturedfromrectangularandsquaresectionwireandbar.1LimitationonmaterialsectiondimensionsThisstandardappliesonlytospringsmadefromrectangularsectionmaterialwheretheratioofradialdimension,b,totheaxialdimension,h,termedtheshapefactor,m,isnotgreaterthan2.5andnotlessthan0.4.NOTE1Thisappliesbecause,outsidetheshapefactorrange2.5to0.4,itisdifficulttocoilaspringaccurately.NOTE2Therearenumerousmethodsofcalculatingtheparametersnecessaryforthedesignofspringsandinitiallythedesignerisfreetouseanyoneofthese.Thisstandarddifferentiatesbetweenspringsthathaveorhavenotbeenstressrelievedafterforming,designatedgroupAsprings,andsprings,thematerialofwhichhasundergoneastructuralchangebyheattreatmentafterforming,designatedgroupBsprings.ThisBritishStandardgivestwomethodsofspecifyingspringsforgeneralpurposesandonemethodoftestingsprings
【中国标准分类号】:J26
【国际标准分类号】:21_160
【页数】:24P;A4
【正文语种】:英语


【英文标准名称】:Quantitiesandproceduresfordescriptionandmeasurementofenvironmentalsound-Part3:Short-termmeasurementswithanobserverpresent
【原文标准名称】:环境音量的描述和测量用数量和程序.第3部分:具有现场观察者的短期测量
【标准号】:ANSIS12.9Pt.3-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Thisstandardisthethirdpartofaseriesrelatedtoquantitiesandproceduresfordescriptionandmeasurementofenvironmentalsound.Thispresentstandard,Part3,dealswithbasicmeasuremtnsofsoundwithanobserverpresent.Typically,thedurationofthesemeasruementsrangesfromseveralminutestoseveralhours.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:
【正文语种】:英语