Parametric studies of magnetic-optic imaging using finite-element models

2000 ◽  
Author(s):  
C. Chao
Keyword(s):  
Finite Element ◽  
Finite Element Models ◽  
Parametric Studies

Seismic behavior of exteriorbeam–column joints with high-performance steel rebar: Experimental and numerical investigations

2020 ◽  
Vol 24 (1) ◽  
pp. 90-106
Author(s):  
Fei Gao ◽  
Zhiqiang Tang ◽  
Shilong Mei ◽  
Biao Hu ◽  
Shitao Huang ◽  
...  
Keyword(s):  
Finite Element ◽  
Axial Load ◽  
High Performance ◽  
Compressive Loading ◽  
Load Ratio ◽  
Reinforcement Ratio ◽  
Finite Element Models ◽  
Flexural Failure ◽  
Axial Load Ratio ◽  
Parametric Studies

Three full-scale exterior beam–column joints with anti-seismic steel reinforcement were tested under quasi-static cyclic loading and column axial compressive loading. The test variables were column axial load ratio and joint core hoop reinforcement ratio. Experimental results, including failure mode, hysteretic curve, ductility, energy dissipation, stiffness degradation, and decoupling of deformations, were presented and analyzed. The tests revealed that the anti-seismic rebar resulted in good joint seismic performance and that column axial load ratio and joint core hoop reinforcement ratio impose limited influence of joint performance when the joint failed in beam flexural failure. The calibrated finite element models developed based on OpenSees were then used to simulate the behavior of joint specimens. Parametric studies via finite element modeling were performed to study the influence of various parameters on the performance of beam–column joints.

scholarly journals PARAMETRIC STUDIES ON THE COMPONENT-BASED APPROACH TO MODELLING BEAM BOTTOM FLANGE BUCKLING AT ELEVATED TEMPERATURES

2016 ◽  
Vol 56 (2) ◽  
pp. 132
Author(s):  
Guan Quan ◽  
Shan-Shan Huang ◽  
Ian Burgess
Keyword(s):  
Finite Element ◽  
Analytical Model ◽  
Elevated Temperatures ◽  
Finite Element Models ◽  
Bottom Flange ◽  
Class 1 ◽  
Shear Buckling ◽  
Post Buckling ◽  
Parametric Studies ◽  
Better Than

<p>In this study, an analytical model of the combination of beam-web shear buckling and bottom-flange buckling at elevated temperatures has been introduced. This analytical model is able to track the force-deflection path during post-buckling. A range of 3D finite element models has been created using the ABAQUS software. Comparisons have been carried out between the proposed analytical model, finite element modelling and an existing theoretical model by Dharma (2007). Comparisons indicate that the proposed method is able to provide accurate predictions for Class 1 and Class 2 beams, and performs better than the existing Dharma model, especially for beams with high flange-to-web thickness ratios. A component-based model has been created on the basis of the analytical model, and will in due course be implemented in the software Vulcan for global structural fire analysis.</p>

Analytical Study of Appropriate Design for High-Grade Induction Bend Pipes Subjected to Large Ground Deformation

2004 ◽  
Vol 126 (4) ◽  
pp. 376-383 ◽  
Author(s):  
Hiroshi Yatabe ◽  
Naoki Fukuda ◽  
Tomoki Masuda ◽  
Masao Toyoda
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Analytical Study ◽  
Ground Deformation ◽  
Bending Moment ◽  
Finite Element Models ◽  
High Grade ◽  
Buried Pipeline ◽  
Parametric Studies

In order to clarify the significant parameters to control the deformability of high-grade induction bend pipes, finite element analyses simulating the deformation behavior subjected to an internal pressure and bending moment were carried out. Parametric studies were conducted using the finite element models with various mechanical properties and geometric imperfections. The change in the integrity of the buried pipeline due to the quality of the induction bend pipe was then quantitatively examined. Consequently, this study indicated that the mechanical properties, the dimensions and tolerance and the properties of the “transition” part should be appropriately designed in proportion to the ground deformation.

A Finite Element Analysis of the General Rolling Contact Problem for a Viscoelastic Rubber Cylinder

1988 ◽  
Vol 16 (1) ◽  
pp. 18-43 ◽  
Author(s):  
J. T. Oden ◽  
T. L. Lin ◽  
J. M. Bass
Keyword(s):  
Finite Element ◽  
Variational Principles ◽  
Standing Waves ◽  
Rolling Contact ◽  
Finite Element Models ◽  
Viscoelastic Cylinder ◽  
Element Analysis ◽  
Elastic Rubber ◽  
Frictional Effects ◽  
Rough Foundation

Abstract Mathematical models of finite deformation of a rolling viscoelastic cylinder in contact with a rough foundation are developed in preparation for a general model for rolling tires. Variational principles and finite element models are derived. Numerical results are obtained for a variety of cases, including that of a pure elastic rubber cylinder, a viscoelastic cylinder, the development of standing waves, and frictional effects.

Affordable structural optimization for large-size dynamic finite element models

1997 ◽  
Author(s):  
Francois Hemez ◽  
Emmanuel Pagnacco ◽  
Francois Hemez ◽  
Emmanuel Pagnacco
Keyword(s):  
Finite Element ◽  
Structural Optimization ◽  
Finite Element Models ◽  
Dynamic Finite Element ◽  
Large Size
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