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Probability Evaluation Modeling and Planning of Product Disassembly Profit
Hongxing Deng,Tiangang Qiang,Xiwang Guo,Ying Zhao 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.9
Disassembly modeling and planning is meaningful and instructive for remanufacturing and recycling of disused products. However, an actual disassembly process of products has uncertainties since a variety of unpredictable factors. To handle such uncertainty, this work presents a novel disassembly modeling and planning approach using an extended stochastic Petri nets. An extended stochastic disassembly Petri nets (ESDPN) model is defined to provide basis for disassembly planning. Moreover, based on it, some typical probability evaluation models is built accordion to different disassembly criterion. In addition, a hybrid intelligent integrating stochastic simulation and neural network (NN) is proposed to solve the proposed models, respectively. Some numerical examples are given to illustrate the proposed models and the effectiveness of proposed algorithms.
Optimization Design of the Multi-stage Inventory Management for Supply Chain
Hongxing Deng,Ting Yuan,Chunli Yan 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.10
Aiming at the problem of multi echelon inventory management logistics network based on the concept, the automobile spare parts warehousing logistics as the breakthrough point, the supply chain inventory total profit as the objective function, the automobile spare parts supply chain inventory model is optimized, the multi echelon inventory management strategy, the strategy makes the enterprise inventory cost is reduced, the production efficiency is increased.
Yugao Ma,Jiusong Liu,Hongxing Yu,Changqing Tian,Shanfang Huang,Jian Deng,Xiaoming Chai,Yu Liu,Xiaoqiang He 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6
The solid-state core of a heat pipe cooled reactor operates at high temperatures over 1000 K withthermal and irradiation-induced expansion during burnup. The expansion changes the gap thicknessbetween the solid components and the material properties, and may even cause the gap closure, whichthen significantly influences the thermal and mechanical characteristics of the reactor core. This studydeveloped an irradiation behavior model for HPRTRAN, a heat pipe reactor system analysis code, tointroduce the irradiation effects such as swelling and creep. The megawatt heat pipe reactor MegaPowerwas chosen as an application case. The coupled irradiation-thermal-mechanical model was developed tosimulate the irradiation effects on the heat transfer and stresses of the whole reactor core. The resultsshow that the irradiation deformation effect is significant, with the irradiation-induced strains up to2.82% for fuel and 0.30% for monolith at the end of the reactor lifetime. The peak temperatures during thelifetime are 1027:3 K for the fuel and 956:2 K for monolith. The gap closure enhances the heat transferbut caused high stresses exceeding the yield strength in the monolith