According to the structural characteristics and mechanical characteristics, we developed a composite
main loadin-bearing beam structure. This paper presents the design of the main beam overlay detailing its forming
process. Based MSC. Patran/ Nastran establish a main beam finite element analysis model using linear solver main un-
der multi-level load beam static strength analysis, it shows the structure of the strain and displacement results. While
the design of the strength test program, the main beam structure static strength test was verified, strain and displace-
ment information was collected to determine the response of the structure. The results show that composite main load-
ing-bearing beam structure design meets the strength requirements,and provide reliable data for the composite materi-
als used in primary load-bearing structure.