Composite impact simulation
High-speed impact on composite structures is a phenomenon that engineers in various industries such as aerospace, marine, and automotive should focus more on. In this project, the impact on the laminate composite structure was studied. In these simulations, Abacus finite element software is used.
In order to simulate the damage in the composite, the model of the composite material was used along with the degradation criterion and its growth law. This model has the ability to grow damage gradually. Many problems related to numerical simulations such as instability and dependence of the results on the size of the element tried in this model are reduced as much as possible.
Composite impact resistance
Comparing several different sheets, it was concluded that the composite sheets show good impact resistance. In these simulations, in order to better analyze different modes of damage, it can be observed. These modes include matrix cracking, fiber breakage, and cracking. To simulate delamination, the Cohesive Zone Model was used due to its advantages over other methods such as VCCT.