Structural Dynamics Modification Using Surface Grooving Technique : The Effectiveness of Check board Pattern and Comparison the Algorithm for Initial Starting Point

그루브를 이용한 표면형상변형 동특성 변경법 : 체크무늬 그루브의 효용성과 초기 시작점의 선택 알고리즘에 대한 비교

Structural Dynamics Modification (SDM) is a very effective technique to improve structure's dynamic characteristics by adding or removing auxiliary structures. changing material properties and shape of structure. Among those of SDM technique, the method to change shape of structure has been mostly relied on engineer's experience and trial-and-error process which are very time consuming. In order to develop a systematic method to change structure shape, surface grooving technique is studied and successfully applied to HDD cover model. To check the effectiveness of this surface grooving technique, the grooved HDD cover design was manufactured using rapid prototyping and experimentally tested to prove the effectiveness of the grooving method as one of SDM techniques. And the modal strain energy and eigenvalue sensitivity method for choosing the initial starting point are compared.