Structural Analysis of a Scissor Structure

This paper presents equilibrium mechanics and a finite element model for analysing a scissor structure that contains pivots with zero bending stiffness representing structural instability. The pivot at the centre of each structural unit, which is a feature of scissor structures, can be used to transfer the displacement between the units. It cannot, however, transfer the rotation between these units, and the angular stiffness must be considered independently for each unit. To construct a general model of the scissor structure, a scissor unit was developed using the left and right boundary connections of adjacent units to simulate a periodically symmetric structure. The proposed method allows us to obtain an accurate distribution of the internal forces and deflections without the use of special elements to account for central pivots.This research is supported by the Grantin-Aid for Challenging Exploratory Research of the Japan Society for the Promotion of Science; KAKENHI Grant Number JP18K18888. The developing and research of the Mobile bridge are supported by the Grant-in-Aid for Scientific Research (A) of the Japan Society for the Promotion of Science; KAKENHI Grant Number JP19H00784 and are supported by academic collaborate research with GECOSS CORPORATION in Tokyo