A finite element parametric modeling method of aircraft wing structures is proposed in this paper because of time-consuming characteristics of finite element analysis pre-processing. The main research is positioned du...A finite element parametric modeling method of aircraft wing structures is proposed in this paper because of time-consuming characteristics of finite element analysis pre-processing. The main research is positioned during the preliminary design phase of aircraft structures. A knowledge- driven system of fast finite element modeling is built. Based on this method, employing a template parametric technique, knowledge including design methods, rules, and expert experience in the process of modeling is encapsulated and a finite element model is established automatically, which greatly improves the speed, accuracy, and standardization degree of modeling. Skeleton model, geometric mesh model, and finite element model including finite element mesh and property data are established on parametric description and automatic update. The outcomes of research show that the method settles a series of problems of parameter association and model update in the process of finite element modeling which establishes a key technical basis for finite element parametric analysis and optimization design.展开更多
为解决铁路土建工程建筑信息模型(BIM,Building Information Modeling)设计过程中出现的重复建模和数据传递不畅等问题,以路基、桥梁、隧道专业为代表,从三维协同设计环境出发,提出了信息传递及设计成熟度管理方法,实现了模型数据的有...为解决铁路土建工程建筑信息模型(BIM,Building Information Modeling)设计过程中出现的重复建模和数据传递不畅等问题,以路基、桥梁、隧道专业为代表,从三维协同设计环境出发,提出了信息传递及设计成熟度管理方法,实现了模型数据的有效管理及BIM技术标准的有效实施;围绕“骨架–模板”设计方法,提出以骨架设计、构件模板装配设计形成的土建工程BIM设计流程,实现了三维BIM环境下的土建工程设计流程再造;对土建工程间的接口设计技术进行研究,充分发挥了协同设计环境在土建工程领域的应用价值。该研究为满足各专业信息需求提供了有效路径,可为后续BIM技术在铁路工程中的应用提供借鉴。展开更多
In the process of traditional aircraft structure design, repetitive manual modeling of aircraft wing box parts is time consuming. Meanwhile, it＇s difficult to update associated models when product design changes. Aim...In the process of traditional aircraft structure design, repetitive manual modeling of aircraft wing box parts is time consuming. Meanwhile, it＇s difficult to update associated models when product design changes. Aiming at solving these problems, a method for rapid modeling and updating associated models was put forward. Based on skeleton model, combining with the technology of template re-use, it makes aircraft wing box rapid modeling and correct updating possible. The detailed implementation process of the method was given, and a certain aircraft wing box was taken as an instance to verify the feasibility and effectiveness of this method.展开更多
基金supported by the National Natural Science Foundation (No.51075021)
文摘A finite element parametric modeling method of aircraft wing structures is proposed in this paper because of time-consuming characteristics of finite element analysis pre-processing. The main research is positioned during the preliminary design phase of aircraft structures. A knowledge- driven system of fast finite element modeling is built. Based on this method, employing a template parametric technique, knowledge including design methods, rules, and expert experience in the process of modeling is encapsulated and a finite element model is established automatically, which greatly improves the speed, accuracy, and standardization degree of modeling. Skeleton model, geometric mesh model, and finite element model including finite element mesh and property data are established on parametric description and automatic update. The outcomes of research show that the method settles a series of problems of parameter association and model update in the process of finite element modeling which establishes a key technical basis for finite element parametric analysis and optimization design.
文摘为解决铁路土建工程建筑信息模型(BIM,Building Information Modeling)设计过程中出现的重复建模和数据传递不畅等问题,以路基、桥梁、隧道专业为代表,从三维协同设计环境出发,提出了信息传递及设计成熟度管理方法,实现了模型数据的有效管理及BIM技术标准的有效实施;围绕“骨架–模板”设计方法,提出以骨架设计、构件模板装配设计形成的土建工程BIM设计流程,实现了三维BIM环境下的土建工程设计流程再造;对土建工程间的接口设计技术进行研究,充分发挥了协同设计环境在土建工程领域的应用价值。该研究为满足各专业信息需求提供了有效路径,可为后续BIM技术在铁路工程中的应用提供借鉴。
文摘In the process of traditional aircraft structure design, repetitive manual modeling of aircraft wing box parts is time consuming. Meanwhile, it＇s difficult to update associated models when product design changes. Aiming at solving these problems, a method for rapid modeling and updating associated models was put forward. Based on skeleton model, combining with the technology of template re-use, it makes aircraft wing box rapid modeling and correct updating possible. The detailed implementation process of the method was given, and a certain aircraft wing box was taken as an instance to verify the feasibility and effectiveness of this method.
