Stainless steel pipe fittings are the main load-bearing components on the bracket. Research has been conducted on the structural design and optimization of stainless steel pipe fittings, the preparation technology of stainless steel pipe fittings, the theoretical design and experimental analysis of axial compression performance. Strength design has always been a difficulty and hot spot in the structural design of stainless steel pipe fittings. Whether it is angle-laminated stainless steel pipe fittings or axial/circular orthogonal layered pipe fittings, an appropriate amount of hoop layer can significantly improve the axial compressive strength of the pipe fittings. After changing the 20% angle layer (axial layer) to the ring layer, the axial compressive strength of stainless steel pipe fittings with a winding angle of 20° has doubled, and the axial compressive strength of orthogonally layered stainless steel pipe fittings is also Increased by more than 10%.
The finite element model is used to analyze the bearing performance of the composite thrust bracket on the X-33 and Atlas V launch vehicle for the reusable launch vehicle. It is pointed out that the comprehensive bearing capacity of the X-33 thrust bracket is better. Good, suitable for more complex load conditions, while the Atlas V thrust bracket structure has a better compression bearing capacity and is suitable for load conditions dominated by large thrust.
