Stiffness and Strength Evaluation of the CFRP Display Wall mount Arm

CFRP 디스플레이 월마운트암의 강성과 구조강도의 평가

Abstract

Recently as flat display panels are getting narrower, TV wall mounts also become slimmer for interior design issue. In this study CFRP(Carbon Fiber Reinforced Plastic) was used for TV wall mount to satisfy slim arm design along with enough strength and low weight. The 16 staking sequences was made with orthogonal array to reduce experimental cases. Strength analysis of the TV wall mount arm made of CFRP laminate was studied on condition of staking sequences using FEA(Finite Element Analysis) and stiffness and strength of those cases were evaluated using deflection and Tsai-Wu's Failure criterion. The result showed that [$-45^{\circ}/90^{\circ}/45^{\circ}/0^{\circ}/-45^{\circ}$] lay up case was suitable for the wall mount arm staking design from the criteria of deflection and Tsai-Wu's Failure Index.

Fig. 1 Feature of TV Wall mount

Fig. 2 FEM model and Load & Boundary condition

Fig. 3 Result of Total deflection

Fig. 5 Max deflection of Case 12

Fig. 7 Max deflection of Case 4

Fig. 4 Result of Thai-Wu Failure Index

Fig. 6 Failure Index of Case 12

Fig. 8 Failure Index of Case 4

Fig. 9 Failure Index of Case 3

Fig. 10 Thai-Wu Failure Index Result of Case 15

Fig. 11 Max deflection of Case 15

Table 1. Laminate Material Properties

Table 2. Staking Sequences