Crack arrest and propagation in impact loaded shock resistant PMMA: mesh-free numerical simulation

Kean-Sheng Tan (1) , Patrice Longère (2) , Norazrina Mat-Jali (1)

1 NDUM Faculty of Engineering
2 ICA - Institut Clément Ader

The use of shock resistant RT-PMMA in engineering structures potentially subject to accidental overloading requires an evaluation of its crack arrest capability under impact loading. Based on experimental results obtained from a series of Kalthoff and Winkler (KW)-type impact tests, the present study aims at numerically reproducing the conditions for brittlelike crack initiation and propagation in impact-loaded RT-PMMA. For that purpose, three-dimensional SPH numerical simulations were conducted and the performance of various failure criteria was evaluated. The numerical model together with a combination of stress-and straindependent failure criteria were shown to fairly reproduce the experimental results in terms of finite crack advance and orientation.

Domaines: Mécanique des matériaux [physics.class-ph]

Kean-Sheng Tan, Patrice Longère, Norazrina Mat-Jali. Crack arrest and propagation in impact loaded shock resistant PMMA: mesh-free numerical simulation. DYMAT 2021 - 13th International Conference on Mechanical and Physical Behaviour of Materaisl Under Dynamic Loading - Madrid (Spain) - Sept.19-24, 2021, Sep 2021, Madrid, Spain. ⟨10.1051/epjconf/202125002021⟩. ⟨hal-03351093⟩