Relative displacement calculation method and relative displacement calculation device

摘要

PROBLEM TO BE SOLVED: To easily specify the magnitude of relative displacement of a joint portion of parts constituting a structure. A relative displacement calculation device (10) constitutes a structure and displacement information of nodes of a plurality of elements obtained by performing a structural analysis on a structure model in which the structure is represented by a plurality of elements. The joining position information regarding the joining position of a plurality of parts to be formed is acquired, and based on the displacement information and the joining position information, the elements of the joining surface of the plurality of parts constituting the structure are extracted and joined at the joining surface. Corresponding points corresponding to each node of the element of the joint surface of the first part of the two parts are set on the element of the joint surface of the second part to be joined with the first part at the joint surface. The relative displacement of the node with respect to the corresponding point is calculated, and the relative displacement of the relative displacement in the direction parallel to the joint surface is output. [Selection diagram] Fig. 1