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Because of the complex influencing factors, it is very difficulty to resolve the problem of large scale pillar extraction and goaf disposal in underground mine. Fortunately, with the rapid development of computational mechanics, numerical methods and computer technology, the feasibility of numerical simulation has become an important feature of the current rock mass mechanics. Accordingly, using the...
A new method integrating reduced model and mixed design variables is proposed and applied in the lightweight design of a bus skeleton for the purpose of mass reduction without loss in structural performance. A whole skeleton model and a reduced model are built. All parts except chassis and floor assembly are reduced out using static reduction method. Reduced model is verified with finite element analysis...
With the increment of traffic flow, the delay of flights in the TMA area is increased. It is essential that the potential usage of TMA airspace should be excavated. In this paper, SIMMOD PLUS is used for the evaluation of airspace structure of Chongqing TMA, taking Chongqing airport influence and its flow control strategy into consideration. Furthermore, the bottleneck which limits the operation of...
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