Effect of Fiber Lay-Up Direction Misalignment on the Natural Frequency of Composite Laminates
With the extensive use of composite materials in aviation industry, the research of factors which affect their basic performances in production and usage has become very important. In this paper, a finite element analysis model is built by the commercial software MSC.Nastran / Patran to research the effect of fiber lay-up direction misalignment on the natural frequency of composite laminates. The results show that, in the same boundary conditions, stacking sequence has a significant impact on the natural frequencies and vibration modes of composite laminates, and in the lay-up process, the natural frequency change of laminates caused by 0° fiber lay-up direction misalignment is much larger than the natural frequency change of laminates due to 90° fiber lay-up direction misalignment. In the process control and certification of composite laminate plates lay-up, special attention should be taken to the inspection of 0° direction fibers.
Guojun Zhang and Jessica Xu
Z. Y. Feng et al., "Effect of Fiber Lay-Up Direction Misalignment on the Natural Frequency of Composite Laminates", Advanced Materials Research, Vols. 160-162, pp. 65-70, 2011