DESIGN METHOD FOR COMPOSITE MATERIAL, EVALUATION METHOD FOR COMPOSITE MATERIAL AND COMPOSITE MATERIAL

摘要

To provide a design method for a composite material capable of reducing weight of a plate thickness change portion by increasing an amount of change of the plate thickness change portion while reducing concentration of stress in the plate thickness change portion.SOLUTION: A design method for designing a composite material 1 formed by laminating a plurality of reinforcing fiber materials 1a, the composite material 1 having a plate thickness change portion 13, the plate change thickness change portion 13 including a cutting base material 23 on which a drop off portion 23a is formed, includes: a base material setting process S1 that, in the plate thickness change portion 13, sets one layer of a plurality of reinforcing fiber base materials 1a as a base material 21, sets the reinforcing fiber base material 1a facing the base material 21 as a cover base material 22, and sets the reinforcing fiber base material 1a located between the base material base 21 and the cover base material 22 as the cutting base material 23; an evaluation value calculating process S2 that stress analyzes these base materials 21, 22, and 23 and calculates an evaluation value; and a cutting base material arranging process S3 that sets up the cutting base material 23 in the plate thickness change portion 13 based on the evaluation value.SELECTED DRAWING: Figure 3