Stress on plates may increase in the neighborhood the edges or the holes for rivets or bolts. Excessive stress concentration may lead to severe breakage of the plates. Thus, it is important to conduct optimization of arrangement of holes at the design stage. In this paper, accuracy of FEM analysis was examined for such stress concentration . By changing the hole size on a narrow plate, change of the stress concentration factor(K) was investigated. Additionally, the same experiment was conducted about series of multiple holes on plate to investigate interaction between the adjacent holes. Then, the FEM results were compared to the reference predictions respectively. Finally, a method by which simple stress concentrating situations can be optimized, will be suggested. This method was examined by FEM, and showed similar tendency with the expectation. Therefore, this method can be valuable when arranging the holes on a plate.

• 이상구(서울대학교 기계항공공학부) | Sang Gu Lee
• 공두현(서울대학교 기계항공공학부) | Du Hyun Gong
• 심지수(서울대학교 기계항공공학부) | Ji Soo Sim
• 신상준(서울대학교 기계항공공학부) | Sang Joon Shin Corresponding author