基于BESO方法的多功能微结构材料拓扑优化设计  

Topology Optimization Design of Multifunctional Microstructure Materials Basedon BESo Method

作　　者：林逢春 王祎 Lin Fengchun;Wang Yi

机构地区：[1]福建信息职业技术学院,福建省福州市350118

出　　处：《工程机械》2023年第7期127-131,I0013,I0014,共7页Construction Machinery and Equipment

基　　金：福建信息职业技术学院科研课题(Y21108)。

摘　　要：多功能微结构材料由于其兼顾良好的物理性能和轻量化的能力而受到越来越多的关注,同时已被运用于多种应用领域。为了满足工程结构的多功能性要求,提出一种多目标的拓扑优化方法,考虑两个相互矛盾的设计目标,即同时优化材料的刚度和隔热性能。基于周期微结构材料,结合改进的双向进化结构优化方法(BESO),同时优化结构刚度和结构的隔热性能,以设计出满足多种设计需求的多功能结构。根据分析可知,可以通过改变分配给刚度与热传导系数的权重系数,实现不同需求的多功能材料,该方法为实现微结构材料功能化设计提供了一种有效的途径。Multifunctional microstructure materials have received increasing attention due to their good physical properties and lightweight ability,while already being applied in a variety of fields.To meet the multifunctional requirements of engineering structures,a multi-objective topology optimization approach is proposed,which takes into account two conflicting design objectives,e.g.simultaneous optimization of the stiffness and thermal insulation performance of the material.Based on periodic microstructure materials and combined with an improved bidirectional evolutionary structural optimization approach(BESO),both the stiffness and thermal insulation performance of the structure are optimized to design a multifunctional structure that meets various design requirements.It is concluded from the analysis that,the multifunctional materials with different requirements can be achieved by changing the weight coefficients assigned to the stiffness and thermal conductivity,and this method provides an effective way to realize functional design of microstructure materials.

关 键 词：BESO 微结构材料 多功能 

分 类 号：TB30[一般工业技术—材料科学与工程]