FEM-SPH adaptive method for analysis protection mechanism of B4C ceramics. (June 2023)

• Record Type: Journal Article
• Authors: Cheng, Zhi-Tao; Xiang, Zhong; Song, Qi
• Is Part Of: Engineering failure analysis. Volume 148(2023)
• Publication Date: 2023-06
• Subjects: B4C ceramic -- Adaptive method -- Damage morphology -- Protection mechanism -- Collision process; System failures (Engineering) -- Periodicals; Fracture mechanics -- Periodicals; Reliability (Engineering) -- Periodicals; Pannes -- Périodiques; Rupture, Mécanique de la -- Périodiques; Fiabilité -- Périodiques; Fracture mechanics; Reliability (Engineering); System failures (Engineering); Periodicals; Electronic journals; 620.112
• DOI: 10.1016/j.engfailanal.2023.107207
• Languages: English
• ISSNs: 1350-6307

Abstract

Highlights: Accurately simulated the impact of a tungsten heavy alloy on a B4 C ceramic target. The energy dissipation mechanism of B4 C ceramics was analyzed from target damage. The protection mechanism of B4 C ceramic target is summarized in detail. Abstract: To simulate the collision of a tungsten heavy alloy projectile with different velocities on the B4 C ceramic target, an adaptive conversion model from Lagrangian elements to SPH particles is developed due to the limitations of the traditional finite element method (FEM) with the element erosion technique. By comparing the simulation results with experimental data and FEM simulation results, the accuracy and effectiveness of the model were validated. According to the damage morphological characteristics, the target damage was classified into the central crush area, cone cracks area, radial/circular area, and fragment falling area by analyzing the damage nephogram, and the formation causes of each area were discussed in detail. According to the simulation results, the impact process between the projectile and target is split into three stages: initial impact stage, erosion stage, and crack propagation stage, and the energy dissipation in each phase was computed and examined. Finally, the protection mechanism is summarized in detail. This study contributes to improve the protection mechanism system of B4 C ceramic target.