ZHANG Xia1, CHEN Zhi hua1, ZHANG Li hua2, LENG Ding xin3

 

(1.Department of Mechanical and Electrical Engineering, Qingdao Technological University Qindao College, Qingdao

 266106, China; 

2.Department of Passenger Car, China Faw R&D Center, Changchun 130011, China; 

3.Department of Mechanical and Electrical Engineering, Ocean University of China, Qingdao 266100, China)

 

Abstract: Aiming at accelerating the application of the fiber reinforced nano polymer composite (FRNC) in the impact engineering, the dynamic behaviors of glass/carbon FRNCs were studied. The effects of impactors with different geometry on the impact performances of composite plate were discussed. According to the strength and stiffness theory of composites, the orthotropic material mechanical constants of glass/carbon fiber reinforced polyamide with carbon nanotube were calculated. The impact model was established by explicit finite element method. The dynamic deformation process were simulated numerically. The stress wave propagation process was observed, and the dynamic responses were measured. The results indicate that the stress initiates in the contact region of impactor and the composite plate, and propagates towards to the boundary of composite plate. The maximum stress increases during the impact process. The stiffness and impact acceleration peak of carbon fiber reinforced nanopolymer composite are both greater, compares with glass fiber.

Key words: Composites; finite element method; impact behaviors