Zhang W.,Northeast Petroleum University |
Zhang W.,Heilongjiang Province Key Laboratory of Disaster Prevention |
Xie D.,Northeast Petroleum University |
Xie D.,Heilongjiang Province Key Laboratory of Disaster Prevention |
And 4 more authors.
Tumu Gongcheng Xuebao/China Civil Engineering Journal | Year: 2012
The dynamic characteristics of ethylene production steel tower are analyzed by the finite element method and the solving characteristic equation method respectively, and the fundamental frequency of the structure is obtained. The calculation results are close to both through the comparison, thus the correctness of the model based on the finite element software are verified. And then two directions earthquake response analysis of ethylene production steel tower are taken by the finite element software. Meanwhile, the effect of gravity and damping on earthquake response of the structure is researched. The results show that: (1) the response of the structure is larger in the direction of small structure lateral stiffness, but the maximum value of layers elastic displacement angle between layers satisfy the given limits in the requirements of Chinese "code of building seismic design"; (2) gravity will increase the displacement response of the structure, but it has no effect on speed and acceleration response of the structure; (3) damping will reduce structural displacement, velocity and acceleration response greatly, therefore, increasing the structure damping is more beneficial to the structural seismic.
Liu X.-Y.,Northeast Petroleum University |
Liu X.-Y.,Heilongjiang Province Key Laboratory of Disaster Prevention |
Li Y.-H.,Northeast Petroleum University |
Li Y.-H.,Heilongjiang Province Key Laboratory of Disaster Prevention |
And 5 more authors.
Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | Year: 2015
In hydraulic suspension transport, the gelled crude oil particles are known to change shape in response to complex interphase force. The VOSET method is used to simulate the deformation of the gelled crude oil particle in hydraulic suspension transport. An Image Pro Plus software is used to record the major and minor axises and based that the deformation degree is analysied. The result shows that the gelled crude oil particle exhibits deformation behavior as the effect of shear flow and the gelled crude oil particle is close to oval. When the temperature are 55℃ (newton fluid), 46℃ (pseudo plastic fluid), 40℃ (yield pseudoplastic fluid), the deformation of crude oil particles are 59.38%, 47.29%, 32.47%. The deformation of the gelled crude oil particle is found to be the smallest. Through mechanism analysis, the deformation of the gelled crude oil particle is influenced by the shear effect of flow, crude oil yield value and the behavior of shear thinning. © 2015, Science Press. All right reserved.