Inelastic Material Models for Numerical Analysis of Unreinforced Compressed Masonry Columns

2016 ◽  
Vol 677 ◽  
pp. 197-202 ◽  
Author(s):  
Aneta Maroušková
Keyword(s):  
Numerical Analysis ◽  
Software Package ◽  
Experimental Program ◽  
Material Models ◽  
Literature Research ◽  
Future Goals ◽  
Material Characteristics ◽  
Inelastic Material ◽  
Commercial Software Package

This paper deals with numerical analysis of unreinforced compressed masonry column. The experimental program is part of a research project NAKI [1]. Three material models usually used for simulation rock, soil, concrete and other quasi-brittle materials were assumed for numerical modelling of masonry column and mutually compared. The material characteristics were identified based on literature research since the needed mechanical properties were not available. The determination of own material characteristics and comparison numerical simulation with experimental test can be outlined as a future goals. For all simulations the commercial software package ABAQUS was used and the obtained numerical results are discussed.

Masonry Column Reinforced by FRP Wrapping: Behavior and Numerical Analysis

2016 ◽  
Vol 825 ◽  
pp. 27-30 ◽  
Author(s):  
Aneta Maroušková
Keyword(s):  
Numerical Analysis ◽  
Software Package ◽  
Unreinforced Masonry ◽  
Numerical Results ◽  
Experimental Program ◽  
Research Project ◽  
Commercial Software ◽  
Non Linear ◽  
Commercial Software Package ◽  
Frp Wrapping

A numerical analysis for masonry columns is presented in this paper. The behavior and character of deformation of compressed unreinforced masonry columns is investigated and compared with the deformation of masonry columns reinforced by FRP wrapping. The experimental program is part of a research project NAKI [1]. Both, the bricks and the mortar are modeled as 3D continuum and to the interface between these two materials a non-linear contact law is assigned. The contact between reinforcement and masonry support is considered as perfectly-adherent. Two different cases are simulated - the ratio of Young ́s modulus of brick and Young’s modulus of mortar is 5:1, respectively 1:5. For all simulations the commercial software package ABAQUS was used and the obtained numerical results are discussed.

scholarly journals A Structural Pounding Formulation Using Systematic Modal Truncation

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Jianye Shi ◽  
Franz Bamer ◽  
Bernd Markert
Keyword(s):  
Software Package ◽  
Contact Problems ◽  
Computational Accuracy ◽  
Structural Pounding ◽  
Commercial Software Package ◽  
Contact Impact ◽  
Seismic Pounding ◽  
Modal Truncation ◽  
Truncation Strategy

The evaluation of the response function of the structural pounding problem is generally time-consuming if high-order systems are applied. The well-known modal truncation strategy is outstandingly efficient for a single linear ground-accelerated structure. However, for the analysis of the structural pounding problem, the classical modal truncation technique turns out to be ineffective as additional higher frequency motion due to possible contact impact occurs. This makes the determination of how many modes should be taken into account in order to obtain a required level of accuracy more difficult. Therefore, in this paper, a systematically controlled modal truncation strategy adapted to the seismic pounding formulation under consideration of high nonlinearity and nonsmoothness of contact problems is introduced. A comparative study of the classical and the controlled modal truncation technique is presented and a comparison with the commercial software package ABAQUS© is provided. It is shown that the computational accuracy is significantly improved when applying the new systematically controlled modal truncation strategy.

COLLAPSE AND BUCKLING OF STAINLESS STEEL PRESTRESSED STAYED COLUMNS

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Josef Machacek ◽  
Radek Pichal
Keyword(s):  
Stainless Steel ◽  
Numerical Analysis ◽  
Software Package ◽  
Ansys Software ◽  
Steel Material ◽  
Inelastic Material ◽  
Main Emphasis ◽  
Nonlinear Stress ◽  
Stainless Steel Material ◽  
Strain Relationship

Buckling and collapse of stainless steel elements loaded in compression are studied experimentally and numerically. Based on four tests of single crossarm stayed columns the numerical analysis using ANSYS software package is validated and presented in a detail. First, for a completeness, the study refers to columns with one central crossarm, but the main emphasis is devoted to columns with two crossarms located in the thirds of the element length. The analysis employed geometrically and materially nonlinear analysis (GMNIA) to respect a change of inner energy during buckling of an "ideal" (perfect) column, initial deflections of an "imperfect" column (covering various initial deflection modes and amplitude values) and nonlinear stress-strain relationship belonging to stainless steel material. The results cover both critical buckling and maximal collapse loads of the columns in compression. Finally, the important comparisons of the load capacities concerning stayed columns in compression with one/two crossarms and ratios of critical/maximal loadings, elastic/inelastic material and fixed/sliding support of the stays at the crossarms are provided. Conclusions comprise evaluation of these results and principal recommendations for the design of stayed columns.

scholarly journals Assessment of the Passenger Ride Comfort for a Coach by Means of Simulation Computations

2017 ◽  
Vol 8 (2) ◽  
pp. 24-32 ◽  
Author(s):  
Ján Dižo ◽  
Miroslav Blatnický ◽  
Rafał Melnik
Keyword(s):  
Software Package ◽  
Ride Comfort ◽  
The Body ◽  
Vehicle Dynamic ◽  
Vehicle Model ◽  
Rail Vehicle ◽  
Comfort Evaluation ◽  
Commercial Software Package ◽  
Ride Comfort Evaluation

Abstract The ride comfort for passenger represents an important aspect of a rail vehicle dynamic analysing. The computational software utilisation helps to determine forces and accelerations in various positions through the body of a rail vehicle in order to predict ride properties or evaluate ideas for ride comfort in advance. This article is focused on the dynamic simulation of a rail vehicle running on a real track section. The rail vehicle model creation, computations performance and determination of accelerations badly needed for the ride comfort evaluation is performed in commercial software package.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

scholarly journals Determination of stress-strain state of the wooden church log walls with software package

2016 ◽  
Vol 86 ◽  
pp. 02019 ◽  
Author(s):  
Anastasia Chulkova ◽  
Sergey Lukichev ◽  
Marina Romanovich
Keyword(s):  
Software Package ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State
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