Interface member wiring design support apparatus, wiring design method, wiring design support method, and computer-readable storage medium

Flexural rigidity E of a target wire harness (to be referred to as a WH hereinafter) is calculated by a predetermined bi-quadratic function associated with a curvature on the basis of a diameter of the WH, and the wiring shape of the WH which satisfy fixing positions is calculated on the basis of torsional rigidity C and the weight per unit length which are supplied from a storage device in accordance with the diameter of the target WH (S 4 -S 5 ). The bi-quadratic function is set such that the calculated flexural rigidity E decreases as the curvature of the WH increases.