The purpose of this study was to identify the cause of a defect formed on the side of a rolled special section. The defect was classified as a lap on the basis of micrographs. With respect to the position of the defec...
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ISBN:
(纸本)9788087294109
The purpose of this study was to identify the cause of a defect formed on the side of a rolled special section. The defect was classified as a lap on the basis of micrographs. With respect to the position of the defect and to its irregular occurrence, a hypothesis was framed that the defect was caused by increased wear of first roll pass. In order to verify this hypothesis, computersimulation of rolling of the section was performed. It included alternatives using new and worn rolls. The amount of wear of rolls was intentionally defined as higher than actually possible in order to increase the probability of defect formation in mathematical modelling. 3D simulation software Forge2005 was used for the modellingprocess. The simulation showed that due to the wear of rolls, the width of the section increased markedly prior to 7th reduction. As the forming process in 7th reduction takes place in completely closed set of roll pass no. 2, i.e. with restricted expansion, it was identified as the possible instant of flash formation. This flash then may form the lap in the following reduction. The assumption was confirmed using mathematical modelling. The mathematical model showed that the probability of formation of the lap in 8th reduction was 70%. The most probable location of the lap formation according to the model matches the locations of actual defects. This study resulted in a recommendation for monitoring the level of wear on the first roll grooves and for observation of its impact on the section shape prior to its entry in the 2nd roll pass in 7th reduction.
Currently Changjiang River valley and many cableway hydrology stations in our country mostly have installed cableway automatic control testing system. How to precisely transport signal and obtain data is a very import...
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ISBN:
(纸本)9781846260612
Currently Changjiang River valley and many cableway hydrology stations in our country mostly have installed cableway automatic control testing system. How to precisely transport signal and obtain data is a very important problem, it is also a key problem to influence the collection, transport, process and predict and forecast intelligently of water resource information. A cable hydrology data transport system based on flush bonding system is designed, by using dual tone multiple frequency to transport and using cable rope circuit and water body to form transport circuit. Through application in field, the system can transport data reliability, simple and conveniently, and with no other additional equipment, can bring a great convenient to the users.
Nowadays, frozen foods are well-known among Malaysia society. This is due to the modern lifestyles which require short food preparing times without neglecting the food nutritious. In supporting this requirement, the m...
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ISBN:
(纸本)9780791802977
Nowadays, frozen foods are well-known among Malaysia society. This is due to the modern lifestyles which require short food preparing times without neglecting the food nutritious. In supporting this requirement, the manipulation of vending machine is identified as a tool to promote modern and healthy living style, besides to simplify the cooking process. This paper describes the effort on designing conceptual model for a proposed steaming food vending machine simulator. Conceptual modelling is the most crucial part in developing simulation model;since in this part, the developer need to identify the variables;recognize the desired simulation flows and transform the deliverables into visualized form which can be understood by all parties related to the project. In this study, the process of three main states (user selection state, freezer state and steaming state) has been modelled using process approach, which emphasized on the process flow or control logic to construct the model for steamed buns vending machine application.
The proceedings contain 93 papers. The topics discussed include: simulation of thermalprocesses: solutions studied in the automotive industry;oxide reduction and diffusion in Fe-Cr alloy honeycombs;motion of diffusio...
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The proceedings contain 93 papers. The topics discussed include: simulation of thermalprocesses: solutions studied in the automotive industry;oxide reduction and diffusion in Fe-Cr alloy honeycombs;motion of diffusional transformation fronts in multi-component systems;on the physical and mathematical interpretation of the isokinetic hypothesis;modelling of precipitation of carbides during tempering of martensite;modelling of retained austentite in carburized layers;modelling of phase transformations and hardening of carbonitrided steels;objective modeling of some elastoplastic materials with phase changes;and numerical simulation of welding stresses and distortions under consideration of temporal and local changes of strain rate.
Nowadays,frozen foods are well-known among Malaysia *** is due to the modern lifestyles which require short food preparing times without neglecting the food *** supporting this requirement,the manipulation of vending ...
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Nowadays,frozen foods are well-known among Malaysia *** is due to the modern lifestyles which require short food preparing times without neglecting the food *** supporting this requirement,the manipulation of vending machine is identified as a tool to promote modern and healthy living style,besides to simplify the cooking *** paper describes the effort on designing conceptual model for a proposed steaming food vending machine *** modelling is the most crucial part in developing simulation model;since in this part,the developer need to identify the variables;recognize the desired simulation flows and transform the deliverables into visualized form which can be understood by all parties related to the *** this study,the process of three main states(user selection state,freezer state and steaming state)has been modelled using process approach,which emphasized on the process flow or control logic to construct the model for steamed buns vending machine application.
This paper describes a process flow of data pre-processing for computational experiment in analyzing protein interaction networks. The aim of this process flow is to fulfill the requirement of our graph-based algorith...
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This paper presents a basic multi-layer model of human movement process. A behavior model is used to simulate actions of individual pedestrians while a cellular automata model is used to simulate their small scale mov...
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In high performance parallel computing, energy consumption has become a more and more important problem. Under the support of the voltage scaling-available processors, reducing CPU voltage/frequency in the non-critica...
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Non close loop manufacturing process, typically in the hard disk media industries rely from its inspection machine to generate production yield temporal data that can be used for future analysis. In order for an engin...
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simulation is one of tools that has been used widely in several manufacturing areas and organizations as well as in automotive industries. Using a valid simulation model may give several advantages in creating better ...
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