Low-Velocity Impact Characteristics of Carbon Fiber Composites Lattice Core Sandwich Structures
Since composite sandwich structures are susceptible to low-velocity impact damage, a thorough characterization of the loading and damage process during impact is important. In the present paper, the low-velocity impact response of carbon fiber composites lattice structures are investigated by experimental and numerical methods. Impact tests on composite plates are performed using an instrumented drop-weight machine (Instron 9250HV) and a new damage mode is observed. A three-dimensional finite element model is built by ABAQUS/Explicit and user subroutine (VUMAT) to predict the peak loading and simulate the complicated damage problem. It can be found that numerical predictions coincide well with experimental results.
Yansheng Yin and Xin Wang
S. X. Wang et al., "Low-Velocity Impact Characteristics of Carbon Fiber Composites Lattice Core Sandwich Structures", Advanced Materials Research, Vols. 79-82, pp. 127-130, 2009