Analytical Method for Evaluating the Impact Response of Stiffeners in a Ship Side Shell Subjected to Bulbous Bow Collision

摘要: This paper addresses a simplified analytical method for evaluating the impact responses of stiffeners in ship side shell subjected to head-on collision by bulbous bow. The are classified as “central stiffener” and “lateral according their relative position In predictions, it is assumed that flexural bending central stiffener plate occurs simultaneously. However, deformation mode outside indenter contact region linear derive its resistance. curved lateral proposed calculate resistance consider interaction effect with plate, which can cause fracture earlier. Model tests three specimens (one unstiffened reference two stiffened plates) quasistatically punched conical performed validate method. Resistance-penetration curves damage shapes obtained. experimental results illustrate effects on initiation influence tripping Moreover, predicted correspond well, suggesting accurately predict crashworthiness bow collision.