Vibration Characteristics of Unit Cell Structures Fabricated by Multi-Material Additive Manufacturing
Abstract
Natural vibration frequency of objects fabricated by Additive Manufacturing (AM) is experimentally investigated. In this paper, several beam structures consisting of square unit cells are fabricated by material extrusion type AM, which is usually called Fused Deposition Modeling (FDM). The target object is oscillated by a magnetic motor and the amplitude of vibration is measured with a laser vibrometer. The effects of deposition direction and material composition on the primary natural frequency are discussed. These factors can be controlled by using AM. The experimental results showed that the frequency obviously depends on both deposition direction and material composition. The possibility of a vibration design method in product design was indicated.
Keywords
Additive Manufacturing Material extrusion Vibration Natural frequency Deposition directionReference
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