Received: December 19, 2016 Revised: February 06, 2017 Accepted: March 20, 2017 Abstract: Introduction: Seismic isolation has been proven to be an efficient approach to seismic retrofitting of structures based on the concept of reducing the seismic forces by lengthening the structural fundamental vibration period. However, superstructures may collide with each other under seismic excitation as ...

This paper presents analytical solutions for the forward displacement kinematics of the “31-12” fully parallel manipulator design. In this design, three points in the base platform are linked to one single point in the top platform, while two of the remaining top platform points are linked to a single point in the base. Neither the base nor the top platforms of the manipulator have to be planar...

A Trigonometric Shear Deformation Theory (TSDT) for the analysis of isotropic plate, taking into account transverse shear deformation effect as well as transverse normal strain effect, is presented. The theory presented herein is built upon the classical plate theory. In this displacement-based, trigonometric shear deformation theory, the in-plane displacement field uses sinusoidal function in ...

Direct interactive manipulation of 3D objects is very important in Computer Graphics. The user interface to deal with this problem poses a difficult problem because of the high number of degrees of freedom involved, associated with the loss of depth in the viewing projection. This paper introduces a new technique to specify displacement vectors in the three-dimensional space. The technique is b...

Non-destructive 3D micro-computed tomography (microCT) based finite element (microFE) models are used to estimate bone mechanical properties at tissue level. However, their validation remains challenging. Recent improvements in the quantification of displacements in bone tissue biopsies subjected to staged compression, using refined Digital Volume Correlation (DVC) techniques, now provide a ful...

Using the above data on manufacture of grates and taking into consideration bending vibrations saw cylinders displacement under dynamic load. Taking account primary factors sectional individual ribs also in order to prevent cross-displacement ribs. We modeled introduced a new type for single- chamber two-cylinder gin, which is comprised top bottom, aligned with three brackets tightening laths f...

BACKGROUND The aim of this study was to develop and perform the 3D finite element analysis of a femoral head interior supporting device (FHISD). MATERIAL AND METHODS The 3D finite element model was developed to analyze the surface load of femoral head and analyze the stress and strain of the femoral neck, using the normal femoral neck, decompressed bone graft, and FHISD-implanted bone graft m...

In the present work, a zigzag model for symmetric laminated beam is developed. This model uses a sine term to represent the nonlinear displacement field across the thickness as compared to a third order polynomial term in conventional theories. Transverse shear stress and strain are represented by a cosine term as compared to parabolic term. This model satisfies displacement and transverse shea...

The effects of adding an extra layer within a sandwich panel and two different core types in top and bottom cores on low velocity impact loadings are studied experimentally in this paper. The panel includes polymer composite laminated sheets for faces and the internal laminated sheet called extra layer sheet, and two types of crushable foams are selected as the core material. Low velocity impac...