Hui, Qiang Gao, Feng Tan, Xukai You, Dongmei
Published in
Journal of Vibroengineering
Geological faults impair tunnel stability during earthquakes. This study establishes a tunnel dynamic stability evaluation index based on load/unload response ratio (LURR) theory. It considers a seismic wave as a load/unload parameter and tunnel structure strain response as a response parameter. The rationale behind this evaluation index and the fa...
Yan, Wei Zhong, Shouping Li, Huazhong Chen, Jun Yang, Jiangang
Published in
Journal of Vibroengineering
Unstable vibrations in rotating machinery can stem from various causes, making it challenging to determine their origins. This research introduces the operational transfer path analysis method (OTPA) as a means to identify the causes of turbo generator vibrations. The model takes operational parameters, such as power and current, as input, and the ...
Yang, Zhongjie Feng, Jin Wan, Jingyu Yu, Xiaobin He, Zhangjin Zhang, Wanfu
Published in
Journal of Vibroengineering
The static fluid-induced force and stiffness coefficient of the smooth annular seal directly affect the rotor system stability. In this paper, a computational fluid dynamics method is applied to investigate the flow characteristics of a smooth annular seal for various eccentricities, discharge/supply pressures and rotational speeds under different fl...
Li, Xuan Jiang, Anmin Dong, Yanchen Xiong, Qiwei Wang, Feifei
Published in
Journal of Vibroengineering
The heliostat is different from the ordinary low building because of the special shape of the heliostat. The wind tunnel pressure test is carried out the model of heliostats in the range of azimuth angles are between 0° to 180° and the range of elevation angles are between 0° to 90. The wind pressure time history of each measuring point on the mirr...
Zhang, Hui Liu, Shengdong Lv, Ziwei Sang, Zhenlong Li, Fangning
Published in
Journal of Vibroengineering
As essential equipment in rotating machinery, the fault diagnosis technology of rolling bearings has achieved great success. However, it still suffers from limitations in terms of generalization and noise resistance performance when operating under complex conditions. To accurately identify the fault types of rolling bearings under different loads ...
Wang, Huan Ge, Shuaishuai Guo, Dong Jiang, Yanjun
Published in
Journal of Vibroengineering
The world is facing a limited supply of fossil fuel resources and stringent environmental constraints. Therefore, it is very important to develop advanced technologies to improve vehicle fuel economy, especially for construction vehicles, which have large engine displacements and poor emission characteristics. The majority of these vehicles use hyd...
Wang, Kefei Shi, Peicheng Zhang, Zhendong
Published in
Journal of Vibroengineering
Compared with the design of traditional fuel vehicles, the design of electric vehicles has its uniqueness, consisting mainly in that the body design must be able to adapt to the new power system and its layout. Power battery pack is an important factor affecting the body design of electric vehicles. In order to study the modeling of power battery p...
Wang, Liangquan Kong, Deren Shang, Fei
Published in
Journal of Vibroengineering
Explosion shock wave pressure is one of the main damage parameters produced in the process of ammunition explosion, and it is also an important technical index to evaluate the damage power of ammunition. However, in the actual testing process, only a limited amount of shockwave pressure data at specific measuring points can be obtained, which canno...
Zhang, Wenting Liu, Jiamin Zhou, Xintao Cui, Yahui
Published in
Journal of Vibroengineering
Due to the non-linear factors of the single loop gear system and the inter-tooth system, is sometimes difficult to establish an accurate nonlinear dynamic model, which leads to the large deviation between the dynamic characteristics and the actual situation. According to the structural characteristics and dynamic mechanism of nonlinear factors, the...
Shao, Ruiying Wang, Hongjun Lu, Kunyan Song, Juan
Published in
Journal of Vibroengineering
Cast steel parts can realize rapid prototyping effectively, which is suitable for complex structural design. However, due to the large residual stress, the problem of mechanical property degradation is more obvious. In order to solve this problem, a high temperature excitation vibration treatment scheme is proposed in this paper. By applying differ...
