| 1. | Effects of impact - induced damage on deflagration - to - detonationtransition of high - energy propellants
推进剂的撞击损伤状态对其燃烧转爆轰的影响 |
| 2. | And these different data also made up of different damage patterns used in the dynamic testing
同时也通过静力荷载为动力试验制造所需的不同损伤状态。 |
| 3. | This provides a new analysis method for recognizing the underground damage status and the stress status
这为认识地下损伤状态或应力状态提供了新的分析方法。 |
| 4. | The monitoring and evaluation of structural fatigue damage has become a significant problem to be studied
结构疲劳损伤状态的监测、评估是结构健康监测的重要课题。 |
| 5. | Damage degree for a structure can be detected by energy spectrum at different frequency bands for the signal decomposed by wavelet packets . 2
不同损伤状态下的结构节点振动信号经小波包分解后在各频带上的投影是不同的,将其作为特征向量可以实现对结构的损伤程度的识别。 |
| 6. | The macroscopic damage status of the earth crust block , which is caused by earthquake fracture , is described with several concepts - the damage degree , the damage rate and the strain rate
对地壳块体由地震破裂引起的宏观损伤状态，通过引入损伤度、损伤率? 、应变率?来刻画。 |
| 7. | Combined with the graph correlating the first resonance frequency with driving point location , the method localizes the crack by monitoring a jump in the graph
结合裂纹梁第一阶谐振频率与驱动点位置关系曲线，利用曲线上出现的突变点，准确地识别了梁的损伤状态和裂纹损伤位置。 |
| 8. | The finite element model of an undamaged 3 - story experimental frame model is firstly updated based on the measured dynamic information by using neural network method
摘要首先建立了三层试验框架结构的有限元模型，利用未损伤状态的动态测量数据，采用神经网络方法分步对原结构的有限元模型进行了修正。 |
| 9. | Dynamic tests are applied to the beams , and during the course of the dynamic testing , mode parameters were obtained under the initial state , prestressed state and different damage degrees of the beams
振动测试分别在试验梁的初始状态,张拉完毕,以及各种不同的损伤状态下进行,动力试验数据主要包括自振频率以及模态振型。 |
| 10. | A combined network which consists of four subnets is put forward . every subnet is trained using the data of one portion of arch - ring elements , and the outputs from all subnets give the whole damage information of the arch - ring
构造了一个由四个子网组成的组合网络，每个子网分别针对拱肋中的部分单元进行训练，然后由各子网的输出共同给出整个拱肋的损伤状态。 |
