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Search Results: 1 - 10 of 11809 matches for " CAE simulation "
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机座零件的铸造工艺及CAE模拟分析
Casting Technology and CAE Simulation Analysis of Machine Base Parts
 [PDF]

庄晔, 缪小吉, 孙斐, 邱永宁, 胡静
Mechanical Engineering and Technology (MET) , 2015, DOI: 10.12677/MET.2015.44032
Abstract:
分析了机座零件的结构特点及技术要求,利用双砂芯设计方案解决了复杂结构零件的铸造难题,通过MAGMAsoft软件对铸造工艺、充型、凝固过程进行模拟和分析,发现选择的铸造工艺方案在整个浇注过程金属液面比较平稳,没有紊流发生,内浇口在充型过程中始终处于充满的状态。同时,根据铸件缩孔、缩松等缺陷及热节的位置,提出了进一步优化方案为:上表面增加四个发热冒口或增加一个溢流冒口、底面设置覆砂冷铁以加快冷却速度。
The structural characteristics and technical requirements of the machine base parts were analyzed; double sand core design scheme was used to solve the problems in casting complex structure parts. The casting, mold filling and solidification process were simulated and analyzed by MAGMAsoft software; it was found that the selected casting process could offer relatively stable metal liquid with no turbulence, and the gate was always kept in full state in the filling process. Meanwhile, a further optimization plan was developed according to the casting shrinkage, micro- hole and thermal section positions, which is increasing four exothermic risers or adding an overflow riser on the top surface, and setting chills on the bottom surface to speed up the cooling speed.
Comparación de Deformaciones de un Aforador Determinadas por Simulación del Proceso de Inyección con Valores del Proceso Real
Padilla,Alfredo; Baselga,Juan; Bravo,Julio;
Información tecnológica , 2006, DOI: 10.4067/S0718-07642006000400010
Abstract: a comparative study between the actual deformation of a real industrial part obtained by injection moulding and the displacement in the same simulated part has been performed using c-mold, with the objective of verifying the predictive capabilities of process simulation tools. the selected part is a gauge, made of polyamide 6/10 reinforced with 50% of fibber glass, that presents soft sink marks in the lateral areas as main defects. process simulation was initially performed using the process conditions used by the manufacturer and, in a later stage, those conditions were optimised for engel 125 and 175 injection machines. using the optimum process parameters a set of parts was manufactured and the deformations were measured in several points located along two parallel longitudinal axis. these deformations were compared with displacement values obtained from simulation. excellent agreement between the two sets of values was found except in the most external regions of the part.
Estudo de caso de pe?a moldada pelo processo de inje??o-compress?o para termoplásticos utilizando análise computacional
Kiam, Thyago M.;Pereira, Nilson C.;
Polímeros , 2007, DOI: 10.1590/S0104-14282007000100007
Abstract: the injection-molding of thermoplastics is the main process used in the production of plastics parts. there are some limitations in the conventional injection process, specially related to raw materials, machines configuration and operation, which hamper fabrication of thin parts with large areas such as car windows and lenses. on the other hand, the process has been improved continuously with several new technologies, going beyond the conventional injection molding process, including the "injection-compression" process. in this paper, using cae (computer aided engineering) technology, the author studied the production of pc lens by both processes: conventional injection molding and injection-compression molding. the studies were basically conducted in the following sequence: flow pattern study and optimization of the injection-compression process focusing on the weld line size, molding window study for both cases and comparison of several parameters, particularly shear stress and clamp force - as they are key parameters for the production of large-area parts. the results confirm the advantages of the injection-compression process.
Studies Regarding Design and Optimization of Mechanisms Using Modern Techniques of CAD and CAE
Marius Tufoi,Ion Vela,Constantin Marta,Adelin Ionel Tu??
Analele Universit??ii Eftimie Murgu Re?i?a. Fascicula de Inginerie , 2010,
Abstract: The paper presents applications of modern techniques of CAD (Computer Aided Design) and CAE (Computer Aided Engineering) to design and optimize the mechanisms used in mechanical engineering. The use exemplification of these techniques was achieved by designing and optimizing parts of a drawing installation for horizontal continuous casting of metals. By applying these design methods and using finite element method at simulations on designed mechanisms results a number of advantages over traditional methods of drawing and design: speed in drawing, design and optimization of parts and mechanisms, kinematic analysis option, kinetostatic and dynamic through simulation, without requiring physical realization of the part or mechanism, the determination by finite element method of tension, elongations, travel and safety factor and the possibility of optimization for these sizes to ensure the mechanical strength of each piece separately. Achieving these studies was possible using SolidWorks 2009 software suite.
Improvement of die life in high speed injection die casting
Yasuhiro Arisuda,Akihito Hasuno,Junji Yoshida
China Foundry , 2008,
Abstract: High-speed injection die casting is an effi cient manufacturing technology for upgrading aluminum die-cast products. However, defi ciencies (such as die damage in early period) due to larger load on the molding die compared with conventional technology have brought new challenges. In this study, the cause of damage generated in super high-speed injection was investigated by the combination of experimental observation of the dies and CAE simulation (e.g. die emperature analysis, fl ow analysis and thermal stress analysis). The potential countermeasures to solve the above problems were also proposed.
Comparación de Deformaciones de un Aforador Determinadas por Simulación del Proceso de Inyección con Valores del Proceso Real Comparison of Gauge Deformation Determined by Simulation of the Injection Process With Real Process Values
Alfredo Padilla,Juan Baselga,Julio Bravo
Información Tecnológica , 2006,
Abstract: Se ha realizado un estudio comparativo entre las deformaciones reales de una pieza industrial obtenida por inyección y los desplazamientos obtenidos por simulación empleando C-MOLD, con el objeto de verificar la utilidad predictiva de herramientas de simulación de procesos. La pieza seleccionada es un aforador, fabricado en poliamida 6/10 con un 50% de fibra corta de vidrio, que presenta suaves rechupes en las zonas laterales como principal defecto. La simulación del proceso se realizó con las condiciones empleadas por el fabricante y, posteriormente, se optimizó para máquinas de inyección Engel 125 y 175. Con los parámetros óptimos de proceso se fabricaron piezas y se midieron las deformaciones en puntos situados en dos ejes paralelos a la dirección longitudinal de la pieza. Estas deformaciones se compararon con los valores de desplazamiento obtenidos por simulación encontrándose una coincidencia excelente entre ambos, excepto en las zonas próximas a los extremos de la pieza. A comparative study between the actual deformation of a real industrial part obtained by injection moulding and the displacement in the same simulated part has been performed using C-MOLD, with the objective of verifying the predictive capabilities of process simulation tools. The selected part is a gauge, made of polyamide 6/10 reinforced with 50% of fibber glass, that presents soft sink marks in the lateral areas as main defects. Process simulation was initially performed using the process conditions used by the manufacturer and, in a later stage, those conditions were optimised for Engel 125 and 175 injection machines. Using the optimum process parameters a set of parts was manufactured and the deformations were measured in several points located along two parallel longitudinal axis. These deformations were compared with displacement values obtained from simulation. Excellent agreement between the two sets of values was found except in the most external regions of the part.
NUMERICAL SIMULATION OF CASTING''S MOLD FILLING PROCESS
NUMERICAL SIMULATION OF CASTING'S MOLD FILLING PROCESS

JX Zhou,RX Liu,LL Chen,DM Liao,HS Wei,
J.X.
,Zhou,R.X.,Liu,L.L.,Chen,D.M.,Liao,H.,S.,Wei

金属学报(英文版) , 2005,
Abstract: Numerical simulation of casting's mold filling process is the main and the most important aspect of the foundry CAE technology. But it is time-consuming; it may take dozens of hours or several days. While with the development of computer hardware, numerical simulation of casting's mold filling process has made rapid progress. The simulation results, therefore, have become more and more practical. This study tries to find some clues of the computational time of mold filling process. Firstly, this paper introduces mathematic model and the basic route of numerical simulation of casting's mold filling process. Then the computational time of mold filling process has been carefully studied, and some new and useful results have been gained from the study of the computational time. Finally, this paper has given some real applications of numerical simulation of casting's mold filling process.
北京化工大学CAE中心数值仿真工程应用研究
钱才富
- , 2018, DOI: 10.13543/j.bhxbzr.2018.05.015
Abstract: 介绍了北京化工大学计算机辅助机械工程研究中心应用计算机辅助机械工程(CAE)技术对一些重要工程设备或装置进行数值模拟和安全评定的案例,包括大型真空容器、聚丙烯环管反应器、超大型连续式跨声速风洞洞体、大型直立设备组合结构、核电一级冷凝器以及大型火电机组回热系统高压加热器。
Abstract:Several examples of numerical simulations and safety assessment of some important engineering equipment or plants using computer aided engineering (CAE) technology carried out by the Computer Aided Mechanical Engineering Center of Beijing University of Chemical Technology are introduced. These include a large vacuum vessel, a polypropylene tubular loop reactor, a super-large closed transonic-speed wind tunnel, a composite structure of large vertical equipment, a primary condenser in a nuclear power station, a high pressure heater in a large electric power heating system.
Inexpensive Pipelines Health Evaluation Techniques Based on Resonance Determination, Numerical Simulation and Experimental Testing  [PDF]
Waheed Sami Abushanab
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.54046
Abstract:
In this paper, a non-destructive, reliable, and inexpensive vibration-based technique for evaluating Carbon steel pipes structure integrity. The proposed techniques allow a quick assessment of pipes structures at final pipe manufacturing stages and/or just before installation. A finite element modelling (FEM) using ABAQUS software was developed to determine the resonance mode of healthy Carbon steel pipe and a series of experiments were conducted to verify the outcomes of the modelling work. Consequently, the effects of quantified seeded faults, i.e., a 1 mm, 2 mm, 3 mm, and 4 mm diameter holes in the pipe wall on these resonance modes were determined using modelling work. A number of common used vibration analysis techniques were applied to detect and to evaluate the severity of those quantified faults. The amplitudes and frequencies of vibration signals were measured and compared. There were found to be in good agreement with the modelling work and provide important information on pipe construction condition and fault severity.
Modeling of Objects Using Conic Splines  [PDF]
Muhammad Sarfraz, Malik Z. Hussain, Munazah Ishaq
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.63B015
Abstract: This paper contributes towards modeling for the designing of objects in the areas of Computer Graphics (CG), Computer-Aided Design (CAD), Computer-Aided Manufacturing (CAM), and Computer-Aided Engineering (CAE). It provides a modeling technique for the designing of objects. The model is based on a conic-like curve (rational quadratics) method and provides an extra degree of freedom to the user to fine tune the shape of the design to the satisfactory level. The 2D curve model has then been extended for the designing of 3D objects to produce fancy objects. The scheme has been also extended to automate the degree of freedom when a reverse engineering is required for images of the objects. A heuristic technique of genetic algorithm is applied to find optimal values of shape parameters in the description of conics.
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