基于多学科优化的结构轻量化正向设计方法和流程
发布时间：2022-03-10
入选理由：澳汰尔（Altair）提出的基于多学科优化的轻量化结构正向设计方法（Altair C123），可广泛应用于各类型乘用车白车身、商用车驾驶室、高速列车车厢、飞机机体结构的概念设计，确保结构达到目标性能同时完成减重指标。通过拓扑优化，基于影响整体结构的工况寻找较优的传力路径。根据拓扑结果，利用梁单元、壳单元创建低成熟度的简化模型，快速对方案进行评估和迭代。根据截面优化结果，构建详细概念设计模型建模，综合使用局部的拓扑优化、形状优化、尺寸优化、自由尺寸优化等，对结构进行局部加强或整体调整。
Altair's forward design methodology of lightweight structural based on MDO (Altair C123) can be widely used in the concept design of BIW(body in white) of passenger vehicles, commercial vehicle cockpits, high-speed train carriages and aircraft body structures to ensure that the structure meet performance targets and achieve the weight reduction goal. Through topology optimization, better force transfer path is found based on the working conditions affecting the overall structure. Based on the topology results, simplified model with low maturity is created using beam and shell elements to evaluate and iterate the scheme quickly. According to the section optimization results, Altair C123 can build a detailed concept design model and use a conbination of local topology optimization, shape optimization, size optimization, free size optimization, etc. for local strengthening or overall adjustment of the whole structure.
Altair's forward design methodology of lightweight structural based on MDO (Altair C123) can be widely used in the concept design of BIW(body in white) of passenger vehicles, commercial vehicle cockpits, high-speed train carriages and aircraft body structures to ensure that the structure meet performance targets and achieve the weight reduction goal. Through topology optimization, better force transfer path is found based on the working conditions affecting the overall structure. Based on the topology results, simplified model with low maturity is created using beam and shell elements to evaluate and iterate the scheme quickly. According to the section optimization results, Altair C123 can build a detailed concept design model and use a conbination of local topology optimization, shape optimization, size optimization, free size optimization, etc. for local strengthening or overall adjustment of the whole structure.
关键词：正向设计；多学科优化；轻量化设计；拓扑优化
Forward Design, MDO, Lightweight Design, Topology Optimization
Forward Design, MDO, Lightweight Design, Topology Optimization