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Zhengzhou, China

Lan G.,Taiyuan University of Science and Technology | Zhang X.,Taiyuan University of Science and Technology | Ding H.,Taiyuan University of Science and Technology | Wen S.,Taiyuan University of Science and Technology | And 3 more authors.
Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery | Year: 2011

A modified contact model of joint interfaces based on fractal theory was proposed. Furthermore, numerical simulation was carried out to obtain the complicated nonlinear relations between normal contact stiffness and the normal contact load, the fractal dimension D and the fractal characteristic length scale parameter G. The results showed that the normal contact stiffness increased with the normal load, decreased with G but complicatedly with D. The results showed that the contact model could be used to calculate the normal contact stiffness and the normal load.


Lan G.,Taiyuan University of Science and Technology | Zhang X.,Taiyuan University of Science and Technology | Ding H.,Taiyuan University of Science and Technology | Wen S.,Taiyuan University of Science and Technology | And 3 more authors.
Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery | Year: 2012

A modified fractal model of static friction coefficient of joint interfaces based on normal load model and modified size distribution is proposed. Furthermore, numerical simulation was carried out to obtain the complicated nonlinear relations. The results showed that the static friction coefficient versus the micro convex nonlinear relation with the normal load and increased with the normal load and material property increase, decreased with fractal characteristic length scale parameter G *, but complicatedly with D. This is explained that the modified model could be used to analyze and predict static friction coefficient.


Miao N.,Zhengzhou Technical College
BioTechnology: An Indian Journal | Year: 2014

Nowadays, accounting distortion has become an urgent problem awaiting solutions not only in China but also all around the world. Accounting distortion will deteriorate social integrity and will also reduce the efficiency of economic development. This article aims at finding out ways to reduce accounting distortion and improve accounting integrity by studying the game theory among different sides in accounting distortion. The method mainly involves game theory. © Trade Science Inc.


Dong L.L.,Zhengzhou Technical College
Applied Mechanics and Materials | Year: 2014

The upstream enterprises play an important role in the whole supply chain management, and how to select a better upstream enterprise in the supply chain is studied in this paper. First, the index system for the selection of upstream enterprises is established. Then based on the index system, the evaluation model is discussed based on the thinking of AHP. Finally, the application of the index system and the evaluation algorithm is shown through a case. © (2014) Trans Tech Publications, Switzerland.


Dong L.L.,Zhengzhou Technical College
Applied Mechanics and Materials | Year: 2014

In order to reduce inventory cost effectively, the vendor management inventory (VMI) is studied in this paper. The inventory problem of supply chain is described, the model of VMI is established, and the optimal solution is obtained. The research in this paper can enrich the supply chain management theory, and help enterprises improve inventory management level. © (2014) Trans Tech Publications, Switzerland.

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