scholarly journals Unified constitutive material models for nonlinear finite-element structural analysis

1985 ◽  
Author(s):  
A. KAUFMAN ◽  
J. LAFLEN ◽  
U. LINDHOLM
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Nonlinear Finite Element ◽  
Material Models ◽  
Constitutive Material

Development of Material Constants for Nonlinear Finite-Element Analysis

1988 ◽  
Vol 61 (5) ◽  
pp. 879-891 ◽  
Author(s):  
Robert H. Finney ◽  
Alok Kumar
Keyword(s):  
Experimental Data ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Large Strain ◽  
Strain Range ◽  
Nonlinear Finite Element ◽  
Element Analysis ◽  
Material Models ◽  
Tensile Data

Abstract The determination of the material coefficients for Ogden, Mooney-Rivlin, Peng, and Peng-Landel material models using simple ASTM D 412 tensile data is shown to be a manageable task. The application of the various material models are shown to be subject to the type and level of deformation expected, with Ogden showing the best correlation with experimental data over a large strain range for the three types of strain investigated. At low strains, all of the models showed reasonable correlation.

Structural Analysis

2017 ◽  
pp. 124-219
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Analysis ◽  
Numerical Methods ◽  
Three Dimensional ◽  
Wind Engineering ◽  
The Finite Element Method ◽  
Material Models ◽  
Three Dimensional Models ◽  
Base Connections

This chapter develops the components required for successful modelling of temporary structures. It presents the principles, methods and the associated limitations that currently are seen as the state-of-the-art in structural analysis using the Finite Element Method. Material models of steel, aluminium and bamboo are presented with an emphasis on linear and multilinear models for steel and the Ramberg-Osgood model for aluminium. Models are presented for braces, props, beam-to-column connections, top connections, base connections and column-to-column connections based on the latest theoretical and experimental procedures developed by the authors and co-workers. Examples of two and three dimensional models are then developed for access scaffolds, bridge falsework and bamboo scaffolds. Finally, the chapter presents information on the effects of ground modelling and on advanced wind engineering using complex numerical methods.

scholarly journals A Structural Analysis Method for Cable-Beam Composite Structure

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Guoqiang You
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Composite Structure ◽  
Nonlinear Finite Element ◽  
Matrix Analysis ◽  
Nonlinear Finite Element Method ◽  
Analysis Method ◽  
Beam Structure ◽  
Beam System ◽  
And Topology

A structural analysis method is proposed in this paper for cable-beam composite structure with a large number of cable elements; it can improve computational efficiency and accuracy. Firstly, we use a structural division method to divide the whole cable-beam structure into inner cablenet system and edge cablenet-beam system. Because inner cablenet is a pure cablenet structure with given shape and topology, balance matrix analysis method is used to help obtain the best pretension distribution of it with the evenness as objective. For edge cablenet-beam system, with obtaining equilibrium forces of inner cablenet’s pretensions as goal, an iterative pretension losses compensation calculation combined with nonlinear finite element method and balance matrix analysis method is used for edge cablenet to adjust its pretension distribution and make the whole cablenet system keep its preset ideal shape under influence of beams’ deformations. Because edge cablenet-beam system has a lot less cable elements than overall structure, its nonlinear finite element calculations are much easier and faster than those for the whole cable-beam composite structure. In order to verify the above method’s validity, it is used for a spaceborne cablenet deployable antenna example, and the computed results indicate that the method is feasible.

Numerical Modeling of Cob’s Nonlinear Monotonic Structural Behavior

2019 ◽  
Vol 17 (05) ◽  
pp. 1940013
Author(s):  
Alejandro Jiménez Rios ◽  
Dermot O’Dwyer
Keyword(s):  
Finite Element ◽  
Numerical Modeling ◽  
Structural Behavior ◽  
Compression Tests ◽  
Material Models ◽  
Diagonal Compression ◽  
Highly Nonlinear ◽  
Pros And Cons ◽  
Concrete Damaged Plasticity ◽  
Constitutive Material

It has been observed by performing simple and diagonal compression tests of cob wallettes that the structural behavior of cob is highly nonlinear. This paper presents the results obtained of the simulation of cob’s nonlinear monotonic behavior using two well-known finite element commercial packages. Pros and cons of different available constitutive material models are identified and discussed. Concrete (CONCR) and Concrete Damaged Plasticity (CDP) are considered as the constitutive material models that provide the more satisfactory results reproducing cob’s nonlinear monotonic behavior when using ANSYS and ABAQUS, respectively.

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