基于等几何分析的机械产品一体化流程设计

Integrated Process Design of Mechanical Products Based on Isogeometric Analysis

摘要: 在有限元分析中，建模、仿真和优化使用不同的数据模型，从而耗费大量时间进行数据转换。为解决该问题，设计了机械产品一体化流程。该方法采用体参数化造型方法进行建模，该模型可以直接使用等几何分析进行仿真。为节省材料同时保证强度，采用等几何拓扑优化方法获取材料最佳分布。整个产品设计过程中，使用相同数据模型，无需数据转换，避免了离散误差，节约了时间开销。优化后的模型可以再分析和再优化，进而实现了建模、仿真和优化的一体化设计。结果验证了该方法在机械产品设计过程的可靠性。

Abstract: In finite element analysis, different data models are used for modeling, simulation, and optimization, leading to significant time consumption due to frequent data conversions. To address this issue, an integrated process for mechanical product design has been developed. The system employs a volumetric parameterization modeling approach, enabling direct utilization of isogeometric analysis for simulation. To minimize material usage while ensuring structural strength, isogeometric topology optimization is employed to achieve the best allocation of material. Throughout the entire product design process, a unified data model is maintained, eliminating the need for data conversion, thereby avoiding discretization errors and reducing computational overhead. The optimized model can be reanalyzed and further optimized, achieving an integrated workflow of modeling, simulation, and optimization. The results validate the system’s reliability in the mechanical product design process.