In this paper, a method is proposed for geometrically constructing thick panel structures that follow the kinetic behavior of rigid origami by using tapered or two-ply panels and hinges located at their edges. The proposed method can convert generalized pattern of rigid-foldable origami into thick panels structure with kinetic motion, which leads to novel designs of origami for various engineer...

Spinal fusion is the gold standard treatment for severe pathologies in lumbar spine. However, fusion can yield adverse effects, such as Adjacent Segment Degeneration (ASD). Alternatively, non-fusion techniques were proposed. Although infrequent, mechanical complications were reported such as screw loosening and screw breakages. This work aims to use Finite Element Model (FEM) to investigate imp...

We present a new operation to be performed on elements in a Garside group, called cyclic sliding, which is introduced to replace the well known cycling and decycling operations. Cyclic sliding appears to be a more natural choice, simplifying the algorithms concerning conjugacy in Garside groups and having nicer theoretical properties. We show, in particular, that if a super summit element has c...

We present an approach for deformable 3D surface reconstruction using laparoscopic monocular video data that is based on breaking down the nonrigid reconstruction problem into a sequence of temporally-localised rigid reconstructions. Our main contribution, the Rigid Sliding Window algorithm provides a means to achieve this whereby Rigid Shapefrom-Motion is performed over a sliding window that a...

The first reference to the rigidity of frameworks in the mathematical literature occurs in a problem posed by Euler in 1776. Consider a polyhedron P in 3-space. We view P as a ‘ panel-and-hinge framework’ in which the faces are 2-dimensional panels and the edges are 1-dimensional hinges. The panels are free to move continuously in 3space, subject to the constraints that the shapes of the panels...

The tip position control of a single-link flexible manipulator is considered in this paper. The cross-sectional dimension of the manipulator is tuned by genetic algorithms such that the first vibration mode dominates the higher order vibrations. A sliding mode controller of reduced dimension is employed to control the manipulator using the rigid and vibration measurements as feedback. Control e...

A technique using augmented sliding mode control for robust, real-time control of flexible multiple link robots is presented. For the purpose of controller design, the n-link, n-joint robot is subdivided into n single joint, single link subsystems. A sliding surface for each subsystem is specified so as to be globally, asymptotically stable. Each sliding surface contains rigid-body angular velo...

A solution technique for the dynamic analysis of asymmetric base-isolated buildings, subject to earthquake ground motion, is presented. To develop the formulation, a yield surface as a function of both shear force and torsion moment of the sliding surface with rigid perfectly plastic behavior is constituted. To achieve the objective, the yield stress is defined by the friction coefficient throu...

This paper reviews the problem of a thin rigid rod sliding on a horizontal surface in the plane, which is commonly cited as an example of the inconsistency of planar rigid-body Newtonian mechanics. We demonstrate the existence of a consistent solution, using Routh's analysis of rigid-body impact. Copyright © 1987 Carnegie-Mel lon University This work was supported under grants from the System D...

The purpose of this paper is to propose a method for testing the effect varying kerfing parameters, on flexibilization plywood panels indoor applications. evaluation was made by comparisons change in MOE, MOR, and maximum deflection, between flexibilized non-flexibilized specimens subjected static bending tests based EN 310. In order prevent problem sliding from supports occurring specimens, st...