Patent ID: 9129073
Filing Date: 2015-09-08
Classification: G06F

Abstract:
1. A shape optimization method of a plate-like member which has a concavo-convex shape, the method comprising: identifying a bend stress point of the plate-like member as a point of one or more points of the plate-like member where a specific load is applied to the plate-like member such that a bend stress of the bend stress point is higher than corresponding bend stresses from a distribution of other points of the plate-like member; identifying a bend axis from a distribution of stress vectors around the bend stress point; identifying a pair of membrane stress points of the plate-like member from the one or more points based on a distribution of bend stresses and a distribution of membrane stresses, where the pair of membrane stress points are in an orthogonal surface to the bend axis, and where a ratio of a membrane stress to a sum of the bend stress and the membrane stress for the pair of membrane stress points is higher than corresponding ratios for other points of the plate-like member, said membrane stress ratio being described using the following formulation: calculating an offset variable which is a distance between a line segment connecting the pair of the membrane stress points and the bend stress point; identifying a shape of an optimized shape for the plate-like member such that the identified optimized shape minimizes the offset variable, wherein at least one of the identifying the bend stress point, the identifying the bend axis, the identifying the pair of membrane stress points, the calculating the offset variable, or the identifying the optimized shape of the plate-like member is stored in memory or implemented via a central processing unit; and outputting, on a computer display, a representation of the optimized shape for the plate-like member.