“三明治”零件的主要优点是重量轻、刚性好,它特别适用于大型、高强度结构,但是在机械工程应用中几乎只用于次要场合,这主要是由于缺少可广泛应用的连接技术.介绍了研究工作中包括所有基本方案的系统论述和从系统工程设计角度对它进行评价. The main advantages of the sandwich component are its light weight and good rigidity, which is particularly suitable for large, high-strength structures, but is used almost exclusively in secondary mechanical applications for secondary applications due mainly to the lack of a widely available connection This paper introduces the systematic exposition of all the basic schemes in the research work and evaluates it from the perspective of system engineering design.