scholarly journals The Asymptotic Expansion Load Decomposition elastoplastic beam model

2018 ◽  
Author(s):  
Grégoire Corre ◽  
Arthur Lebée ◽  
Karam Sab ◽  
Mohammed Khalil Ferradi ◽  
Xavier Cespedes
Keyword(s):  
Asymptotic Expansion ◽  
Beam Model ◽  
Elastoplastic Beam ◽  
Load Decomposition ◽  
Expansion Load

scholarly journals A new higher-order elastoplastic beam model for reinforced concrete

Meccanica ◽  
2019 ◽  
Vol 55 (4) ◽  
pp. 791-813 ◽  
Author(s):  
G. Corre ◽  
A. Lebée ◽  
K. Sab ◽  
M. K. Ferradi ◽  
X. Cespedes
Keyword(s):  
Reinforced Concrete ◽  
Higher Order ◽  
Beam Model ◽  
Elastoplastic Beam

Collapse Analysis of Ship Hull Girder Using Hydro-Elastoplastic Beam Model: Part 2

2020 ◽  
Author(s):  
Han Htoo Htoo Ko ◽  
Akira Tatsumi ◽  
Kazuhiro Iijima ◽  
Masahiko Fujikubo
Keyword(s):  
Cross Sections ◽  
Ship Hull ◽  
Average Stress ◽  
Beam Model ◽  
Fundamental Study ◽  
Hull Girder ◽  
Softening Behavior ◽  
Smith Method ◽  
Collapse Analysis ◽  
Elastoplastic Beam

Abstract In Part 1 study, a time-domain collapse analysis method of ship hull girder was developed and named FE-Smith method. Hull girder was treated as elastoplastic beam model and Smith’s method was used for collapse analysis of cross sections. A concept of average stress-average plastic strain relationship was introduced so that nonlinear collapse behavior of members can be treated as pseudo strain-hardening/softening behavior. Fluid-structure interaction effects were considered. Uniform cross-section beam was assumed as a most fundamental study. In this Part 2, a container ship is taken as subject model. Not only FE-Smith analysis but also non-linear FE analyses using shell model for collapse parts are performed for comparison purpose. Two types of average stress-average strain curves are considered for FE-Smith analysis, i.e. obtained by Gordo-Soares formulae and by shell FEM. Applicability of FE-Smith method is examined comparing with more precise but time-consuming methods. Some parametric studies are also performed. Wave response will be reported in the next papers.

Collapse Analysis of Ship Hull Girder Using Hydro-Elastoplastic Beam Model (Part 2)

2021 ◽  
Author(s):  
HanHtoo HtooKo ◽  
Akira Tatsumi ◽  
Kazuhiro Iijima ◽  
Masahiko Fujikubo
Keyword(s):  
Ship Hull ◽  
Beam Model ◽  
Hull Girder ◽  
Collapse Analysis ◽  
Elastoplastic Beam

Validation of a Belt Model for Prediction of Hub Forces from a Rolling Tire4

2009 ◽  
Vol 37 (2) ◽  
pp. 62-102 ◽  
Author(s):  
C. Lecomte ◽  
W. R. Graham ◽  
D. J. O’Boy
Keyword(s):  
Internal Pressure ◽  
Equations Of Motion ◽  
Three Dimensional ◽  
Prediction Method ◽  
Analytical Models ◽  
Beam Model ◽  
Impedance Boundary ◽  
Bending Waves ◽  
Tire Rotation ◽  
Three Dimensional Models

Abstract An integrated model is under development which will be able to predict the interior noise due to the vibrations of a rolling tire structurally transmitted to the hub of a vehicle. Here, the tire belt model used as part of this prediction method is first briefly presented and discussed, and it is then compared to other models available in the literature. This component will be linked to the tread blocks through normal and tangential forces and to the sidewalls through impedance boundary conditions. The tire belt is modeled as an orthotropic cylindrical ring of negligible thickness with rotational effects, internal pressure, and prestresses included. The associated equations of motion are derived by a variational approach and are investigated for both unforced and forced motions. The model supports extensional and bending waves, which are believed to be the important features to correctly predict the hub forces in the midfrequency (50–500 Hz) range of interest. The predicted waves and forced responses of a benchmark structure are compared to the predictions of several alternative analytical models: two three dimensional models that can support multiple isotropic layers, one of these models include curvature and the other one is flat; a one-dimensional beam model which does not consider axial variations; and several shell models. Finally, the effects of internal pressure, prestress, curvature, and tire rotation on free waves are discussed.

Sign in / Sign up

Export Citation Format

Share Document