Abstract
The structural response of a cylindrical shell with pre-formed holes subjected to explosive impact loading can be efficiently modeled using the ALE coupling model. The damage process and measurement of point deflection were analyzed based on the results of simulation. Results demonstrated that the pre-formed holes on cylindrical shells will destroy their structural strength. This finding will easily lead to stress concentration, which may affect the damage process and decrease the anti-blast ability of cylindrical shells subjected to explosive impact loading. The pre-formed holes can reduce the load area and weaken the effect of impact loading. Change in hole spacing will influence these factors and affect the deformation of cylindrical shell. The location of the break is different when the distance between the holes is different.
Highlights
As a typical component of the main structure of the aircraft such as missile and rocket, metal tube is widely used in the field of aviation and aerospace
The results show that when the distance from the center point of ammunition explosion is 5 m, the fragments and shock wave act on the structure surface almost at the same time
The preformed round holes are used to simulate the impact penetration effect of the structure surface, the numerical simulation of the cylindrical shell with preformed holes subjected to the explosive impact loading is carried out, the deformation failure mode of the cylindrical shell is observed and recorded, and the influence of the size characteristics of the preformed holes on the cylindrical shell deformation is discussed, which lays a solid foundation for the development of anti-explosion protection
Summary
As a typical component of the main structure of the aircraft such as missile and rocket, metal tube is widely used in the field of aviation and aerospace. The research on the damage effect of thin-walled cylindrical shell structure under the combined action of fragments and blasting wave has a strong practical application value, and is a hot research issue in the field of anti-explosion protection. The preformed round holes are used to simulate the impact penetration effect of the structure surface, the numerical simulation of the cylindrical shell with preformed holes subjected to the explosive impact loading is carried out, the deformation failure mode of the cylindrical shell is observed and recorded, and the influence of the size characteristics of the preformed holes on the cylindrical shell deformation is discussed, which lays a solid foundation for the development of anti-explosion protection
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
