| 1. | Project for counting methods of road loading history 汽车路面载荷历程计数法的一种新思路 |
| 2. | Abstract : the remaining life of speciment is dependent upon loading history , under two level cyclic loading 文摘:两级循环加载条件下,材料的剩余寿命强烈地依赖于加载历史。 |
| 3. | This option is not recommended for cyclic or highly nonproportional load histories in small - strain analyses 我需要做一个混凝土构件的极限承载力的分析,这样的分析任务是不是属于大应变分析? |
| 4. | Increment strain theory was applied to calculating the stress distribution from difference equation and the effect of loading history on them was discussed 利用增量理论,由差分方程算出应力分布,并分析了加载历史对其影响。 |
| 5. | The effect of load history is taken into account . the method and formula confirmed by that results of numerical simulation and calculation in theory are in good agreement with the experimental results 对参考文献的试验梁进行数值模拟和理论计算的结果与试验相吻合,表明本文计算方法与计算公式的正确性。 |
| 6. | Then the finite element method for evaluating dynamic loading history was carried out by using the measured structure responses under the same loading . an example is given to verify the effectiveness of the proposed technique 6推导了求解振动荷载的公式,提出了由结构对振动荷载的反应求振动荷载时程的有限元方法。 |
| 7. | To analyse stretch bending of narrow strip by numerical calculation , taking the loading history into account , the deformed zone was divided into many elements to determine their strain by the condition that constant volume remains in deformation 摘要在考虑加载历史的情况下,为采用数值方法研究窄板拉弯成形,将变形区划分成若干个单元,按塑性变形体积不变条件,确定单元应变。 |
| 8. | The combination of lateral stress and maximum vertical strain denotes the loading history and the reduction of tensile strength and compressive strength denotes the damage of concrete . this work is the theoretical foundation of study on the damage , of concrete due to loading history 分别用经历过荷载历史后混凝土试件的抗压和抗拉强度的劣化来定义其抗压和抗拉损伤,为下文深入研究损伤随荷载历史的发展演化规律奠定了扎实的理论基础。 |
| 9. | By studying the rule of damage evolution and remaining life under conditions of two level cyclic loading , it is considered that damage evolution and remaining life of specimen are dependent strongly on damage and hardening state caused by loading history , under multi - level cyclic loading 通过对两级循环加载下损伤演化规律和剩余寿命的研究,认为在两级(或多级)加载条件下,材料的损伤演化和剩余寿命强烈地依赖于加载历史造成的损伤和硬化状态。 |
| 10. | Finally , the relationship between the damage and the descent of ultrasonic velocity due to triaxial compressive loading history was investigated . it is concluded that the ultrasonic pulse method is convenient and applicable to estimate the damage of concrete due to loading history in engineering practice 最后,根据超声波探伤原理对混凝土载后损伤与超声波速降低之间的关系进行了细致的研究,取得了一些对工程实践具有重要指导意义的结论。 |