共查询到20条相似文献,搜索用时 171 毫秒
1.
CALCULATIONSTOITSFATIGUEDAMAGEFRACTUREANDTOTALLIFEUNDERMANY-STAGELOADINGFORACRANKSHAFTCALCULATIONSTOITSFATIGUEDAMAGEFRACTUREA... 相似文献
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HYDRAULICCALCULATIONANDMEASUREMENTOFFLOWFIELDWITHININLETPASSAGEOFLARGEPUMPINGSTATIONHYDRAULICCALCULATIONANDMEASUREMENTOFFLOWF... 相似文献
3.
Zhang Jiancheng Chen Jianwen Wang AilingLiu Chunrong Cao Xinming Zhou ShichangNortheastern University 《机械工程学报(英文版)》1995,(2)
APPLICATIONOFMAGNETIZATIONVISCOUSCHARACTEROFMAGNETICFLUIDINELECTRO-HYDRAULICSERVOAMPLIFIERAPPLICATIONOFMAGNETIZATIONVISCOUSCH... 相似文献
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STUDYONTESTINGTECHNIQUEFORMEASUREMENTOFFATIGUE-CREEPINTERACTIONRESISTANCESTUDYONTESTINGTECHNIQUEFORMEASUREMENTOFFATIGUE-CREEP... 相似文献
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METALSURFACEMODIFICATION──RESEARCHOFBRUSHPLATINGTECHNOLOGYOFCrLAYERMETALSURFACEMODIFICATION──RESEARCHOFBRUSHPLATINGTECHNOLOGY... 相似文献
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《机械工程学报(英文版)》1994,(3)
NEWFATIGUECUMULATIVEDAMAGEPROBABILISTICMODELOFTHEMECHANICALPARTSNEWFATIGUECUMULATIVEDAMAGEPROBABILISTICMODELOFTHEMECHANICALPA... 相似文献
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NUMERICALANALYSISANDCOMPUTERSIMULATIONOFFORMATIONOFRESIDUALSTRESSESINGRINDINGPROCESS①HuHuananZhouZehuaChenChengzhouSouthChina... 相似文献
8.
Yang Fulun Yu Junyi Hong LiJinlin University of Technology Changchun University 《机械工程学报(英文版)》1995,(2)
REGULARITYOFVIBRATIONRESPONSEOFMECHANICALSYSTEMUNDERAFFECTOFVARI-FREQUENCYEXCITINGFORCEREGULARITYOFVIBRATIONRESPONSEOFMECHANI... 相似文献
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RESEARCHONCOMBINATIONANDPLANNINGOFPROCESSINGUNITSUNDERCIMSCONDITIONRESEARCHONCOMBINATIONANDPLANNINGOFPROCESSINGUNITSUNDERCIMS... 相似文献
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IMPROVEMENTSONTHECONFIGURATIONANDOPTIMUMPARAMETERSOFHIGH一SPEEDTHRUSTBEARINGSIMPROVEMENTSONTHECONFIGURATIONANDOPTIMUMPARAMETER... 相似文献
11.
基于有限元法的机械疲劳寿命预测方法的研究 总被引:1,自引:0,他引:1
介绍了一种采用疲劳有限元分析软件MSC.FATIGUE来对结构件进行疲劳寿命预测的方法。以一阶梯轴为研究对象,在指定的载荷工况下,用有限元法分析了轴上的应力分布情况,并估算危险点处的疲劳寿命。该方法对设计制造过程中机械零部件的疲劳强度分析具有一定的参考价值。 相似文献
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多轴疲劳寿命工程预测方法 总被引:10,自引:1,他引:10
介绍了一种预测受多轴交变载荷工程构件的低周疲劳寿命的方法。该方法以实例的应变计响应作为输入,通过一个循环塑性模型计算测量点的弹塑性应力应变分量,然后用多种多轴临界面疲劳损伤模型计算寿命。所发展的程序可处理一般的自由表面疲劳问题,它的应用通过分析一个典型的汽车零部件得到说明。 相似文献
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ELASTIC-PLASTIC FINITE ELEMENT ANALYSIS OF THREE-DIMENSIONAL CONTACT-IMPACT AT RAIL JOINT 总被引:3,自引:1,他引:3
Wen ZefengJin XuesongZhang WeihuaNational Traction Power Laboratory Southwest Jiaotong University Chengdu China 《机械工程学报(英文版)》2003,16(4):411-416
Using the finite element code ANSYS/LS-DYNA, a dynamic finite element model with anelastic-linear-kinematic-hardening plastic material is established to analyze elastic-plastic stresses inthe railhead in the impact process of wheel and rail occurring at the gap of rail joint. The model isbased on the discrete elastic support condition of the rails, which is suitable for the actual situation ofwheel/track rolling contact. In the analysis the influences of axle load, yield stress and tangent modulus 相似文献
16.
简要介绍了分体式滚圈和有限元的相关理论以及分体式滚圈疲劳寿命的预测方法,对其疲劳磨损的原因作了详细分析,并阐述了有关的预防措施。 相似文献
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Influence of coefficient of friction on fretting fatigue crack nucleation prediction 总被引:1,自引:0,他引:1
The role of coefficient of friction (COF) on fretting fatigue damage prediction is studied using an elastic/plastic finite element analysis (FEA) of an experimental fretting fatigue test. At a scale on the order of tens of microns, the COF has a large impact on fretting fatigue damage prediction. By using a higher COF than that determined from conventional gross sliding tests, along with critical plane multiaxial fatigue damage models, the life and experimentally observed damage at this scale appear to be better predicted. Potential origins of this higher effective COF are discussed. 相似文献
19.
Yohng-Jo Kim Chang-Hyok Choi 《International Journal of Precision Engineering and Manufacturing》2009,10(3):105-113
In this study, the forging die life was investigated using fatigue life and wear quantity, which are generally considered
for estimation of die life. The main aim is development of the equations to adapt finite element analysis to life estimation
for a hot forging die. The Archard’s model was used to estimate the wear life of the die and Goodman’s and Gerber’s equations,
using the stress-life method, were applied to estimation of the fatigue life. These techniques were applied to die life estimation
for the hot forging die of a ball joint socket used in an autovehicle system. Rigid-plastic finite element analysis was first
carried out for the forging process of the ball joint socket and then the elastic stress analysis was performed for the die
in order to obtain fundamental data for the prediction of fatigue life. The die stress analysis requires the deforming loads
of the workpiece to be translated into the contact loading of the die. In this case, the size of finite elements of the die
and the workpiece is important for good interpolation of the loading. Therefore, the influence of element sizes on the interpolation
results of the contact loading was also investigated. The wear volume of the die was measured using a 3-dimensional scanner
of probe type. It was found that the measurement had a good agreement with the results of the finite element analysis for
the die life estimation. 相似文献
20.
介绍了如何用有限元法准确模拟钢制薄壁车轮弯曲疲劳试验的方法,着重讲述如何合理选择有限元网格类型、单元积分形式、单元尺寸大小,强调分析应采用材料"真应力-应变"曲线,给出旋转作用力、螺栓预紧力、加载时间步的设置方法和注意事项,以及判断有限元应力分析结果是否合理的方法.论文随后以车轮疲劳试验结果为参照,结合S-N曲线数学表... 相似文献