| 1. | Additional stress cycles may result under some condition .
在某些情况下也可能产生附加应力循环。 |
| 2. | This would result in about 1. 5 million variable amplitude stress cycles, assuming each truck produces one stress cycle .
假定一辆卡车产生一次应力循环，这将产生15百万次变幅应力循环。 |
| 3. | This would result in about 1 . 5 million variable amplitude stress cycles , assuming each truck produces one stress cycle
假定一辆卡车产生一次应力循环，这将产生1 5百万次变幅应力循环。 |
| 4. | It can simulate the complete stress cycle including the initial stress in the assembly process , by composing stresses of two stages
同时通过使用各阶段应力合成的方法，能较好的模拟考虑钢板弹簧装配阶段预应力在内的完整应力循环。 |
| 5. | However , the stud welding roots in the negative moment region of the beam are often subjected to the joint action of shear stress cycling of the studs and tensile stress cycling of steel girder flanges
但在负弯矩处栓钉焊趾往往承受栓钉剪应力循环和钢梁翼缘拉应力循环的共同作用。 |
| 6. | At last , an approximate method for evaluate fatigue life of structures under repeat random stress block is presented through a lot of calculation examples
进一步分析了随机应力循环下结构的疲劳损伤，导出损伤演化的递推公式，并结合大量的计算给出结构在应力块重复循环下疲劳寿命估算的一个近似方法。 |
| 7. | And the displacement control of the leaf spring center was transferred to the displacement at load point . then after the load step options configuration , the leaf spring stress circulation under cycle loadings was calculated . the model was validated by the result compare between the rigid extracted from the simulation results and the one out of the rigid test of the leaf spring
使用加载头和簧片的接触行为来模拟加载状况，并将对簧片中心的变形控制转换为对加载点的位移约束，然后利用载荷步选项配置完成一个载荷循环，由此计算出加载阶段下钢板弹簧内部的应力循环。 |
| 8. | Firstly , according to analyze the fatigue test result of the normalized carbon steel , a logarithmic expression is developed to describe residual strength degradation process , the definition and expression of fatigue damage under symmetrical stress with constant amplitude are also given , and the expression can explain the non - linear property of fatigue damage
摘要通过对正火45钢的试验数据分析，提出了一个反映剩余强度退化的对数表达式，给出对称恒幅应力循环下疲劳损伤的定义与表达式。 |
| 9. | In this paper , the linear accumulative damage theory commonly used for calculation of the fatigue of variable amplitude stress is used to assess the fatigue of the same part of the structure due to the two kinds of stress cycling and the assessment formulae for the fatigue of the stud welding roots in the negative moment region are also provided
引入通常用于计算变幅应力疲劳的线性累积损伤理论，对2种应力循环引起的结构同一部位的疲劳进行评定，给出组合梁负弯矩区栓订焊趾疲劳评定公式。 |
| 10. | The stress result of assembly process and loading process was exchanged with the ansys special function on external data file . and the stress of leaf spring under virtual condition was calculated by the operation of array vectors of model results , which were generated from the external data file
通过外部文件完成装配阶段向加载阶段跨模型的应力结果数据的传递，然后在加载阶段模型中进行两阶段模型应力数据的合成运算，得到钢板弹簧实际工况下的完整应力循环。 |
