简介:2Dand3Dfiniteelementanalysisofathreestateforgingsequence;Atechnologyforcoldforgingofhelicalgearwithcrowningusingelasticdeformationofdie;[Analysisoftheelasticcharacteristicsofforgingdieforthecoldforgeddimensionalaccuracy;ComparisonofwearresistantMMCandwhitecastiron;Computer-aideddiedesignforaxis-symmetriccoldforgingproductsbyfeatureelimination
简介:Mechanicalsurfacepreparationofslugsincoldforging,Methodforsuppressingthesurfacecrackingincoldforging,Optimizedproductqualityandtoollifeincoldforgingbyprobabilisticsimulation,Overviewofcoldforgingtechnology,PrecisionMultioperationalColdForgingofthePowderRings,StrengthEvaluationofAluminumAlloyBoltbyNano-IndentationHardnessTest,SurfacePreparationforColdForgingbyMechanicalCoating.
简介:EvaluationoftribologicalcharacteristicsonColdforgingdiebypress-inpunchtest;Experimentalandanalyticalcvaluationforelasticdeformationbehaviorsofcoldforgingtool;Fast,precise&highlyflexible;Faultdetectioninacoldforgingprocessthroughfeatureextractionwithaneuralnetwork;Improvementofforgingprocessofa3Dcomplexpartwithrespecttodamageoccurrence;
简介:教学设计▲指导思想与理论依据空间观念作为《数学课程标准(2011年版)》内容的核心概念,是'图形与几何'学习的核心目标之一。为了促进学生对空间的理解与把握、发展空间观念,《标准》安排了图形的平移、旋转、轴对称,运用坐标描述图形的位置和运动等内容。小学阶段《图形的运动》共安排了三次,第一学段安排了一次,侧重于整体感受现象,帮助学生直观认识平移、旋转和轴对称
简介: 问题与情境 对称是一种客观存在.一只蝴蝶的体态、一片叶子的形状、人的身体、一个蜂窝的结构等,给人的感觉是均衡的,它们的外形是对称的.……