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ANSYS is used to carry out 3d elastic-plastic finite element analysis on the transmission tower foundation of different pile spacing. Non-thickness contact element is employed to simulate the nonlinear behavior of pile-soil interaction. Drucker-Prager elastic-plastic constitutive model is adopted to represent nonlinear behavior of soil, the pile being assumed to be elastic. Settlement, foundation...
An automatic press mounting system of rolling bearing is introduced, which is used to execute the press mounting tasks of the rolling bearing in the bearing overhaul workshop of the railway system. As the datum gathered by the acquisition system has contained friction force of the press mounting hydro cylinder, the press mounting monitoring precision is reduced and the press mounting result judgment...
Safe Community growing so fast within the country and around the world, its core sense is to build cross- sectional group, resource integration, full participation and continuous improvement. This article focuses on how to establish and perfect the basic emergency management system in the model of Safe Community: First of all, analyzed the situation and the shortage of our emergency management in...
Seabed oil pipelines are kinds of complex material. During the maintenance and repair of Seabed oil pipelines which need cut off when they are breakage, and it is very difficult to complete the task with common underwater cutting ways. For cutting complex material and materials which have irregular form with diamond wire saw is a perfect technique. The paper gives an introduction of constitution and...
The aim of the thesis is developing wind power installing equipment with self-determination product, that is two-sides lifting tool of steel tube stake. At first, the mechanism of it was designed and its principle was also expounded. Next, the gripping mechanism composed of hydraulic cylinder and inclined gripping blocks was designed and its force relation was analyzed, so the positive pressure of...
China has been the first for more than ten years in the world textile export, and moreover China has a textile consumption big country and production big country in the world, all the things have proved that China have many comparative advantages to develop textile industry, however, America, as representative for the developed countries, in spite of the above fact, frequently made various trade barriers...
Sensor deployment is an important problem in mobile wireless sensor networks, which affects the performance and lifetime of the network. This paper presents a distributed deployment algorithm for mobile sensors. Our algorithm is compared with a simulated annealing based algorithm for deployment with the metrics such as coverage, uniformity, time and distance and the Simulation results are presented...
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