| 1. | Experimental study of impact location method for piezoelectric smart structure 时效处理温度对预应变碳素钢疲劳极限的影响 |
| 2. | Knowledge of the impact location allowed us to reconstruct the trajectories and distribution of material ejected from the crater and evaluate the extent of the fires 对撞击地点的了解,让我们重建物体从陨石坑喷出的轨迹与分布,并评估燃烧的程度。 |
| 3. | It is generally very difficult to measure excitation in operating environment in the case of the complexity of the structure or the variant forms of the excitations , sometimes it is even immeasurable for the impact location is usually inaccessible 由于工程中结构的复杂性及激励形式的千差万别,工作状态下激励载荷常常难以测量,甚至因载荷作用点的不可达等原因而使实际载荷不可测量。 |
| 4. | By means of the wavelet transformation the deconvolution is done in the time domain . the dispersive properties of the elastic wave within the impacts acted are analyzed , and with the nonlinear optimization method concerned the impact location is identified 利用小波变换作时域内的解卷积计算,分析了结构在冲击载荷作用下的弹性波的散射特性,结合非线性优化方法实现了载荷冲击位置的识别。 |
| 5. | The results from simulations were compared with the results from the biomechanical tests . by using this model , lower extremity impact in different loads was simulated . the influence of impact location to lower extremity injuries was analyzed and discussed 通过运用本模型,模拟了不同的高度的冲击载荷时下肢的生物力学响应和骨折情况,并通过比较不同载荷条件下下肢的力学响应,分析了碰撞位置等参数与下肢损伤之间的联系。 |
| 6. | Aiming at the nonstationary characteristic of the dynamic loads and the relation between the responses and the frequency response functions , by use of the responses only , some novel theories are conducted to develop force identification and impact location approaches in this dissertation 本文就动态载荷的非平稳特性对有关前沿理论作了系统研究,着眼于结构响应输出与频率响应函数间的关系,建立了一类单独利用响应数据进行动载荷及其位置识别的新颖理论体系与方法。 |