| 1. | Similar cyclic stresses may have occurred due to wind-induced swaying motion during storage .
同样在存放时由风力引起的横向摆动也可以产生类似的循环应力。 |
| 2. | Fluctuating circulating stress
脉动循环应力 |
| 3. | Symmetry circulating stress
对称循环应力 |
| 4. | Maximum cyclic stress
最大循环应力 |
| 5. | Minimum cyclic load
最小循环应力 |
| 6. | Tensile test and cyclic strain test of copper single crystal were performed . there are three stages in the plastic deformation
观测到铜单晶在拉伸变形过程中的三个阶段，得到了循环应力应变曲线。 |
| 7. | Leathers and hides . determination of the resistance of leathers to repeated bending with of without cyclic stresses . crossed folds method
皮革.有和无循环应力作用下皮革耐反复弯曲的测定.交叉褶皱法 |
| 8. | For hdd pcba , what kind of failures can be captured during vibration test under operating mode ? how to create the sample boards
"第三、振动试验是考核产品受到外界交变循环应力时的可靠性，考核产品长时间使用时的可靠性。跌落试验合格并不代表振动试验合格。 |
| 9. | The approximate polynomial method was based on neuber ' s method , the cyclic stress - strain responses and neuber ' s rule were treated as probabilistic curves , and the statistic characteristic was obtained from the approximate polynomial . the method is fast and easy for engineering application
近似的多项式拟合法在诺伯法的基础上，将循环应力应变曲线和诺伯双曲线视为概率曲线，通过建立近似多项式的方法，求得局部应力应变的统计特性，快速简便，适合工程应用。 |
| 10. | In this research , fatigue life of laminate composite is predicted phenomenologically , dealing mainly with in - plane stresses without accounting for out - of - plane failures such as delamination . fatigue modulus is used as a physical parameter which helps to describe the basic fatigue behaviour of unidirectional laminates and obtain expressions for cumulative damages defined by strains . based on some typical fatigue test data for unidirectional composite laminates , a cumulative fatigue damage model is presented for predicting the fatigue life of multidirectional laminates with arbitrary stacking sequence under complicated fatigue loadings
本文以碳纤维/树脂基t300 / qy8911层压结构为研究对象，从唯象的观点出发，以疲劳模量为参量构造损伤函数，基于几组最典型的单向板疲劳试验数据，建立单向板在多轴循环应力作用下的疲劳寿命模型，并以此为基础，发展同种材料体系的任意铺层形式的多向层压板在复杂循环载荷作用下的疲劳寿命预测方法。 |
