农机部件数字化设计软件平台AgriDEM开发

发布时间：2018-05-03 11:59

本文选题：计算机仿真 + 优化　；参考：《农业工程学报》2017年07期

【摘要】：为解决农机产品开发周期长、工作量大和成本高等问题,研制了集设计和性能分析评价为一体的农机部件数字化设计软件平台AgriDEM(agricultural discrete element method)。该平台通过将CAD软件与自主研发的基于DEM-CFD-MBK(discrete element method,computational fluid dynamics,multi-body kinematics)耦合的分析软件集成,可在设计阶段由农机部件的CAD模型(CAD软件设计图),进行农机部件工作过程的动态仿真和工作性能的分析评价,由此实现农机部件结构方案和尺寸参数的优化。该文详细介绍了该平台的架构和关键技术实现方法,包括农机部件分析模型的建模方法、颗粒的建模方法、基于OpenMP的并行计算方法、基于DLL的模块封装及原型系统开发等,最后通过一个实例验证了该平台的可行性和有效性,可为农机部件的优化设计和数字化设计提供参考。
[Abstract]:In order to solve the problems of long period, large workload and high cost of agricultural machinery product development, a digital design software platform AgriDEM(agricultural discrete element method is developed, which integrates design and performance analysis and evaluation. The platform integrates CAD software with self-developed analytical software based on DEM-CFD-MBK(discrete element method computing fluid dynamics and multi-body kinematics. In the design stage, the dynamic simulation of the working process and the analysis and evaluation of the working performance of the agricultural machinery components can be carried out by using the CAD model of the agricultural machinery components, and the optimization of the structural scheme and the dimension parameters of the agricultural machinery components can be realized. This paper introduces the architecture and key techniques of the platform in detail, including the modeling method of agricultural machinery component analysis model, the method of particle modeling, the parallel computing method based on OpenMP, the module encapsulation based on DLL and the development of prototype system, etc. Finally, an example is given to verify the feasibility and effectiveness of the platform, which can provide a reference for the optimization design and digital design of agricultural machinery components.
【作者单位】：吉林大学计算机科学与技术学院;吉林大学生物与农业工程学院;
【基金】：国家自然科学基金项目(11172112,51675218) 吉林省科技发展计划项目(20140204038NY)
【分类号】：S22;TP391.72

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