Comparative study on damage according to cover materials of car seat multi latch using analytic technique

Abstract

This study investigates the damage according to the cover material of multi latch cover for car. This study compares results when various materials are used at the continuous load and vibration due to damage of latch cover. In this study, the research models were made by using 3D modeling to find out the damage of multi latch for car according to the material. This study was used with ANSYS, the program using finite element method. A pin contacting a chassis was fixed and the latch was displaced as much as 1mm by force. This study examined the damage occurring in latch by applying the prescribed analysis conditions. This study examined the damage of car seat multi latch according to the material. In this study, the maximum equivalent stresses of GFRP, PE, PP and ABS were 854.27MPa, 903.74MPa, 938.76MPa and 1049.2MPa respectively. It was found that the maximum strains of PP, PE, ABS and GFRP were 0.54948mm/mm, 0.56996mm/mm, 0.61495mm/mm and 1.909mm/mm respectively. In case of the ordinary plastic, an object with high rigidity shows less elongation. GFRP, reinforced plastic stacked with glass fiber has high rigidity as it has brittleness but shows high elongation in damage caused by forced displacement. This study suggests that it is desirable to use PE material when using the plastic cover in a place where forced displacement occurs. This study secured the design factors of multi latch according to the materials and found the structural safety of plastics according to the material used in the place where the ordinary load or forced displacement occurs.