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Jiao Y.,Tianjin University | Lin M.,Tianjin University | Zhai X.,Tianjin Petroleum Vocational and Technical College | Ji M.,Tianjin University
Advanced Materials Research | Year: 2013

The internal combustion engine should be enlarged the cylinder diameter for the Power requirements. In order to ensure the engine to work normally, it is needed to compute the strength of the connecting rod. Through adopting ANSYS software, the three-dimensional computational model is constructed, and the stress analysis is carried out. We can learn the stress field of process of deformation. Through calculation the stress and strength of connecting rod are derived. Using the stress which was calculated from ANSYS we can decide the Safety of connecting rod. In general, the analysis is meaningful to optimize the design of connecting rod. © (2013) Trans Tech Publications, Switzerland. Source


Li D.-G.,Tianjin University | Gao X.-P.,Tianjin University | Zhang Y.,Tianjin Petroleum Vocational and Technical College
Advanced Materials Research | Year: 2011

This paper presents an analytic solution for the diffraction of plane P waves by a cylindrical inclusion in half space by Fourier-Bessel wave function expansion method, in which the flat surface of half space is approximated by a large curved surface. The equation can be constructed by the continue boundary and the free surface condition. Based on parametric analysis, the impact of the inclusion on surface displacement amplitude is discussed. It is illustrated that there is large difference of the diffraction characteristics between the hard inclusion and soft inclusion. The displacement response depends strongly on the incident angle and frequency. The diffraction effect can be ignored with large embedded depth of the inclusion. © (2011) Trans Tech Publications, Switzerland. Source


Pan X.,Nankai University | Pan F.,Tianjin Petroleum Vocational and Technical College | Gao Y.,Nankai University | Ma Z.,Nankai University
Lecture Notes in Electrical Engineering | Year: 2014

The fine agriculture environmental monitoring system uses the large area data acquisition technology based on wireless sensor network. It can endlessly monitor soil information all the time and provide reliable basic facts for the planting plan and field management. This system adopts hierarchical network topology, with the upper layer network using self-organization topology and the under layer network using star topology. In order to better solve the energy supply problem of the cluster-head nodes, the energy supply system based on solar energy is proposed. The experiment shows that this system is highly reliable and enjoys good expansibility and great practical value. © 2014 Springer Science+Business Media New York. Source


Wang Y.,Liaoning University | Liang P.,Liaoning University | Hu C.-S.,Liaoning University | Wang X.-L.,Tianjin Petroleum Vocational and Technical College | And 2 more authors.
Corrosion and Protection | Year: 2013

Weight loss method, electrochemical method and scanning electron microscopy (SEM) were used to investiguate the corrosion behavior of X80 pipeline steel in Yingtan soil simulated solution with three different concentrations of LaCl3 (0.25 g · L-1, 0.5 g · L-1 and 1.0 g · L-1). The results show that the corrosion rate of X80 steel obviously reduced by LaCl3, and the corrosion rate was the lowest when the concentration of LaCl3 was 0.5 g · L-1. It was because La(OH)3 and La2O3 were produced when LaCl3 combined with OH-, which produced by the cathodic reduction reactions. This makes the corrosion product film more compact and less defective and thus can block the anodic dissolution. Thus, the corrosion rate of X80 steel in acid soil solution decreased effectively by LaCl3. Source


Hao J.,Southwest Petroleum University | Su X.-B.,China National Petroleum Corporation | Lu G.-X.,Tianjin Petroleum Vocational and Technical College | Dai C.-R.,Petrochina | Xie Y.-N.,China University of Petroleum - East China
Geology in China | Year: 2011

In consideration of the poor hydrocarbon exploration of the study area, the authors firstly studied the petrologic characteristics and reservoir characteristics, and divided diagenesis into two types on the basis of an analysis of diagenesis and diagenetic sequence, and then conducted the quantitative analysis of the E1t1 and E1t 1 separately, which developed the porosity evolution model and deepened the understanding of the reservoir formation procedure as well as the influencing factors. The result shows that the porosity evolution features were controlled jointly by the sedimentary environment, material source, parent rock properties of the provenance, diagenesis, and tectonic process. Source

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