s-n curve造句

• S - n curve movement - based life analytical model
  曲线移动法的寿命分析模型
• This model offers a new and simple method for measuring s - n curve and fatigue limit of a material or a machine part
  该模型提供一种新的测定材料和结构应力（载荷）寿命曲线的简易方法。
• The relations consist of the survival probability ( p ) - s - n curves , the confidence ( c ) - s - n curves , and the p - c - s - n curves
  ( 2 )首次研究了疲劳寿命服从极大值分布时，测定概率s - n曲线的方法。
• According to this model , the s - n curve of a material can be measured with much less samples than before
  强度衰减模型结合强度增长模型，可以为基于结构强度潜力充分发挥的轻量化设计提供技术指导和评价依据。
• Adopting the method in this dissertation to obtain s - n curve can reduce fatigue experiments and helpful in gaining economic efficiency
  采用本文方法预测s - n曲线可以大量减少疲劳试验，节省人力、物力和时间。
• P - s - n curve can be obtained by predicting s - n curve and adding to a few fatigue tests . these methods can be reference for engineering application
  这些方法以s - n预测曲线为基础，只需补充少量疲劳试验即可获得p - s - n曲线，对工程应用有一定参考价值。
• The method to obtain a s - n curve is a cost and difficult work , statistic is applied very much . . the bending moment is representation of fatigue value in test
  通过疲劳试验和推导计算,确定了曲轴复合强化工艺方案为曲轴轴颈淬火加圆角滚压复合强化工艺。
• One point method , mean square curve method and the maximum likelihood principle to predict p - s - n curve for welded steel structures for arbitary survival rate are presented
  本文建立了任意存活率下焊接钢结构p - s - n曲线预测的一点法，均方差曲线法极大似然法。
• Based on the predicting model of effective stress concentration factor , estimating methods of s - n curve for welded steel structures are set up under symmetrical and unsymmetrical stress cycle respectively
  本文以有效应力集中系数预测模型为基础，分别建立了对称循环和非对称循环时焊接钢结构s - n曲线的理论预测方法。
• It is feasible to predict the fatigue life of the structure in the critical location when the s - n curve of the fatigue life applied . the meanings and conclusions can effectively instruct the design of leaf spring system
  最后对模型采用疲劳寿命的s - n曲线法计算能较准确的预测出疲劳破坏发生的区域及结构的疲劳寿命，在实际应用中对钢板弹簧的设计有重要的指导意义。
• This paper measures the probability fatigue life of steel wh530 and steel wh6 1 odl which come from wuhan steel and iron company and make out their p - s - n curve based on the basic principle of probability fatigue
  本文运用概率疲劳的基本原理，对武汉钢铁公司wdl钢种中的wh530钢和wh610d2钢的标准疲劳试样，通过成组试验方法，测定上述两种材料的概率疲劳寿命，分别做出他们的p - s - n曲线。
• 5 component fatigue life curve ( p - s - n curve ) is used in fatigue life analysis . the thesis provides fatigue life whose possibility is 95 % or 50 % . the analysis results of fatigue life and weak elements agree with fact
  本论文分析了该泵车可靠度为95和50的疲劳寿命，分析结果与泵车长期使用总结出的疲劳寿命基本吻合，且分析结果疲劳寿命薄弱部位在泵车实际工作中基本都产生过疲劳裂纹。
• Study the broad sense description and the estimation of the equation parameter of p - s - n curve . study the estimation method of the reliability range of the materials fatigue life under given reliability correspond to different stress level
  并利用数理统计理论，探讨p - s - n曲线的广义描述方法， p - s - n曲线方程参数的估计方法，以及对应不同应力水平下的材料疲劳寿命在给定置信度下的置信区间估计方法。
• The s - n curve , the mathematical relationship of bend fatigue strength or life to strengthening loads and strengthening cycles , the maximum increments of fatigue strength and life were obtained by experimental digital processing
  通过对试验数据的处理，得到了两种结构弯曲疲劳强度的s - n曲线、弯曲疲劳强度和疲劳寿命与强化载荷、强化次数之间的数学关系，以及经过低载强化后弯曲疲劳强度和疲劳寿命提高的最大幅度。
• All experiments were completed by use of loading equipment designed by myself . this equipment has been proved to be efficient , steady and the test data are reliable . based on analysis of the 58 data and 35 domestic data , we got the s - n curve in general use , and established the design method of fatigue
  本文成功地得到了32个常幅及26个变幅试验数据，通过与国内已有数据的回归分析，得到了通用的s - n曲线，建立了螺栓球节点网架结构的疲劳设计方法。
• ( 3 ) the equivalent stress , which is from the coefficients for the spectrum - loads and miner linear accumulated damage rule , an approach for material probabilistic fatigue strength for spectrum loads is suggested . this approach are established by the composed of p - c - s - n curves for extreme maximum model
  ( 3 )根据谱载荷系数和miner线性累积损伤准则得到的谱载荷下的当量应力的关系，与极大值模型的p - c - s - n曲线相结合，提出了谱载荷下材料概率疲劳强度的表达式。
• The effects are on the probabilistic assessment of both scattering regularity and sampling size of the test s - n data . p - s - n curves are characterized by the scale and location parameters related s - n relations for the maximum value model . the materials constants of in the scale relations are given by the average s - n relations and the locations
  曲线用极大值分布的位置与尺度参量s - n关系曲线来表征，尺度参量s - n关系曲线可表示成均值与位置s - n曲线的函数；均值曲线的材料常数应用最小二乘法求出，位置曲线参数通过极大值分布的似然函数解出。
• Using the s - n curve , and considering the influence on fatigue characteristics of the leaf spring real feature , we edited the calculation program in ansys postprocessor to calculate the fatigue life on the critical points of leaf spring . at last the result ' s validation was proven by the fatigue test of leaf spring
  利用材料s ? n曲线，并考虑钢板弹簧实际的零部件特征对其疲劳特性的影响，利用ansys参数化设计语言，编制程序计算出模型危险区域的疲劳寿命，并通过实际的钢板弹簧的疲劳试验来验证结论的正确性。
• On the basis of a reliable finite element model , the load spectrum as specified in aar standard and the s - n curve database for welding joints , regarding the new type of heavy haul open top wagon as the analysis object , fatigue life prediction is conducted in the design phase
  基于可靠的有限元数值仿真模型，以及美国aar标准中的载荷谱、焊接接头的s - n曲线数据库，以重载新型敞车为应用对象，在设计阶段对其进行了疲劳寿命预测，预测结果表明该车确实存在疲劳寿命薄弱部位。
• In first part of the thesis , by a review of the research on aircraft sonic fatigue , the formulas for calculating natural frequencies of the typical aircraft skin - panel structure with four edges simply - supported or four edges fixed - supported were drawn , the response of displacement and stress was analysed under the condition of random white noise loading with the steady - state or unsteady - state . the procedure how to use data of s - n curve under constant loading for predicating the fatigue life of skin - panel subjected to random loading was shown
  通过对声疲劳问题研究的回顾，根据典型飞机蒙皮壁板模型，整理了四边固支，四边简支两种边界条件下多阶模态固有频率，非平稳及平稳随机白噪声载荷下的位移和应力响应，以及如何从等幅s ? n曲线求得随机载荷应力下的疲劳寿命。