CAE Virtual Technology V of the most advanced comp

2022-08-23
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CAE virtual technology for advanced composite materials (V)

the material data base of the database is a unified advanced technology, "said Lu Shihao, vice president of the plastic business department of aoshengde functional materials Co., Ltd., standards and test technical specifications. Therefore, on the basis of in-depth comparative study and analysis of various standards and specifications still in operation in China, the first draft of the corresponding technical standard system in line with China's national conditions and in line with international advanced standards has been sorted out, summarized and developed, forming the technical method system of relevant material testing and testing. Further, the physical, chemical and mechanical properties of a certain number of key composites are studied, tested and analyzed by material levels (reinforcement materials, matrix materials, prepregs, core materials, panel materials, composites, etc.) and environmental conditions. The corresponding material performance spectrum is given through single point data, tables, curves, images and other forms

the advantage of this composite engineering database is to cover the main material varieties, covering the quality of various material structures and properties, from stress-strain curve to rheology, from spectral characteristics to fatigue characteristics. Whether everyone is the most confused data, and according to the specific needs of each user, it is appropriate to combine according to batch, quality, design parameters, CAE material data, RD data, etc. According to the requirements of ISO17025 quality management procedure, all data are traceable, and all data related information is stored in the library, including test data, original data, typical data, statistical data, process and test methods. If necessary, the data collection can be directly connected to the material testing laboratory, and the new material parameters will be automatically obtained at the laboratory site and uploaded to the system through the network-based interface. The detailed measurement data will be saved in full digital format, which fully meets the strict ISO17025 data reporting standard, so as to realize paperless office and keep the data updated in real time. The system can also store material model parameters and support various high-end CAE and design application software, without unit conversion to meet the needs of the software, and without special data post-processing for various applications. The data expansion mechanism can easily add data types and formats, integrate global and local installation, and realize seamless expansion. For the sake of data security, each data is set with a confidentiality level, and the access to the data is controlled. You can determine who can browse the data, determine whether to disclose or hide the data, and control who may load and publish the data. The access log will monitor every user instantly. At the user terminal, users can export data into excel, CAE, matml, MATLAB and other formats, allowing specific users and domains to control and access their own data, determine the value of data information according to needs, conduct data trend analysis and other evaluations, or automatically summarize and review data

Application of advanced composite CAE technology and appointment of mold technicians to participate in mold trial work cases

advanced composite engineering data technology, database and CAE technology system have dialectical and unified internal relations

with the support of composite material data technology and data system, the goal of China's national defense advanced composite material CAE technology is to realize the transformation from analog design and manufacturing to digital design and manufacturing, and promote the realization of an innovative mode in which virtual design and manufacturing precede real design and manufacturing, and virtual design and manufacturing develop synchronously with real design and manufacturing, which has written a rich and colorful history of carbon fiber materials in China, Drive the scientific and technological progress and leapfrog development of China's defense composite technology

the physical process of the development of a typical composite part includes both the traditional prepreg molding and the advanced resin transfer molding (RTM) molding and manufacturing process. Among them, RTM technology is considered to be one of the important technologies of low-cost composites. The U.S. government has included RTM technology in its advanced composite plan and organized a lot of research work. At the same time, the civil composite industry is in the production cost Under the pressure of production cycle and new environmental protection requirements, there has also been an upsurge of RTM research and application. At present, RTM technology has been widely used in aerospace, infrastructure, automotive industry and military industry

taking the development of marine all composite propeller as an example, this paper introduces the CAE application technology in the advanced composite engineering data environment. The CAE digital simulation software environment chain used will precede the physical development to carry out the digital modeling and virtual design analysis of composite parts, the analysis of the structure and performance of virtual prototype and its products (usually a scaled part or model part) and virtual manufacturing, This is usually the process simulation and product analysis of 1:1 parts

first, based on the geometric data of the model scaled marine propeller blades, the structural design and stress-strain analysis of a single composite blade are carried out. This analysis can directly select materials from the database, conduct performance comparison, and conduct finite element modeling and analysis to determine the carbon fiber ply structure of the blade (using laminate-advisor). Finally, select fabrics and resins according to the stress analysis results, and determine the fiber volume content of the model composite components

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