Behavior of three-phase transformers supplying non linear loads using time domain representation and finite element analysis

1998 ◽  
Vol 34 (5) ◽  
pp. 3174-3177 ◽  
Author(s):  
A.C. Delaiba ◽  
J.C. de Oliveira ◽  
J.R. Cardoso ◽  
S.Y. Nabeta
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Time Domain ◽  
Element Analysis ◽  
Three Phase ◽  
Non Linear

SCR VIV Analysis Using Time Domain Code SimVIV

2012 ◽  
Author(s):  
Djoni E. Sidarta ◽  
Tuhin Rakshit ◽  
Vivek Jaiswal
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Boundary Conditions ◽  
Time Domain ◽  
Linear Boundary ◽  
Rotational Stiffness ◽  
Element Analysis ◽  
Steel Catenary Riser ◽  
Non Linear ◽  
Industry Practice

Vortex Induced Vibration (VIV) analysis of risers using time domain Finite Element Analysis (FEA) captures nonlinearity in the system. Such non-linearity may be in the form of boundary conditions or the imposed loadings. Riser VIV analysis using a frequency domain code has to linearize the system, such as imposing linearized boundary conditions. Non-linear boundary conditions for steel catenary riser (SCR) could be in the SCR-soil interaction and in the hang-off system. An SCR is often supported by a flex joint that has non-linear rotational stiffness. The effect of these non-linear boundary conditions in SCR VIV response is investigated in this paper. In addition, the effect of the directions of current profiles with respect to the riser on the SCR VIV response is also investigated. Comparison to standard industry practice, that is applying currents either in the plane or normal to the plane of the SCR, is presented. Time domain VIV code SimVIV coupled with FEA code ABAQUS was used in the analysis.

Time-domain finite element analysis of viscoelastic structures with fractional derivatives constitutive relations

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 1630-1637
Author(s):  
Mikael Enelund ◽  
B. L. Josefson
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Time Domain ◽  
Fractional Derivatives ◽  
Constitutive Relations ◽  
Element Analysis

Behaviour of Axially Loaded Composite Wall Panel by Using Finite Element Analysis

2015 ◽  
Vol 815 ◽  
pp. 49-53
Author(s):  
Nur Fitriah Isa ◽  
Mohd Zulham Affandi Mohd Zahid ◽  
Liyana Ahmad Sofri ◽  
Norrazman Zaiha Zainol ◽  
Muhammad Azizi Azizan ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Composite Structures ◽  
Element Analysis ◽  
Steel Sheets ◽  
Linear Behavior ◽  
Non Linear ◽  
Composite Wall ◽  
Experimental Values ◽  
Civil Engineering Infrastructure

In order to promote the efficient use of composite materials in civil engineering infrastructure, effort is being directed at the development of design criteria for composite structures. Insofar as design with regard to behavior is concerned, it is well known that a key step is to investigate the influence of geometric differences on the non-linear behavior of the panels. One possible approach is to use the validated numerical model based on the non-linear finite element analysis (FEA). The validation of the composite panel’s element using Trim-deck and Span-deck steel sheets under axial load shows that the present results have very good agreement with experimental references. The developed finite element (FE) models are found to reasonably simulate load-displacement response, stress condition, giving percentage of differences below than 15% compared to the experimental values. Trim-deck design provides better axial resistance than Span-deck. More concrete in between due to larger area of contact is the factor that contributes to its resistance.

scholarly journals Optimising reinforcement design in D regions using non-linear finite-element analysis

2013 ◽  
Vol 65 (4) ◽  
pp. 234-247 ◽  
Author(s):  
Hamidreza Amini Najafian ◽  
Robert L. Vollum
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Non Linear ◽  
Reinforcement Design

Estimation of temperature in rubber-like materials using non-linear finite element analysis based on strain history

1999 ◽  
Vol 31 (4) ◽  
pp. 281-294 ◽  
Author(s):  
S. Sridhar ◽  
N. Siva Prasad ◽  
K.N. Seetharamu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain History ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Non Linear

Efficient time-domain finite element analysis for dynamic coupled thermoelasticity

1992 ◽  
Vol 45 (4) ◽  
pp. 785-793 ◽  
Author(s):  
Tae Won Lee ◽  
Woo Jin Sim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Time Domain ◽  
Element Analysis ◽  
Coupled Thermoelasticity

Specimen positioning effect on microshear test: Non-linear finite element analysis

2012 ◽  
Vol 28 ◽  
pp. e15-e16
Author(s):  
L.H.A. Raposo ◽  
L.C.M. Dantas ◽  
T.A. Xavier ◽  
A.G. Pereira ◽  
A. Versluis ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Linear Finite Element ◽  
Non Linear

Finite element analysis of three-phase induction motors: comparison of two different approaches

1999 ◽  
Vol 14 (4) ◽  
pp. 1523-1528 ◽  
Author(s):  
N. Bianchi ◽  
S. Bolognani ◽  
G. Comelato
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Induction Motors ◽  
Element Analysis ◽  
Three Phase

Dynamic Loading Approach for Structural Evaluation of Ultra Large Container Carriers

2005 ◽  
Author(s):  
Bill Shi ◽  
Donald Liu ◽  
Christopher Wiernicki
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Loading ◽  
Impact Load ◽  
Failure Mechanisms ◽  
Direct Calculation ◽  
Element Analysis ◽  
Design Philosophy ◽  
Non Linear ◽  
Large Container

The emerging global economic needs are driving the designs for the next generation of ocean going vessels. Current ultra-large container carrier (10,000 TEU plus) designs are considerably larger and more complex than any currently in service. Proper and rational classification assessment requires that first principles based direct calculation methods be used to augment the standard classification review. The design philosophy behind the ABS Dynamic Loading Approach enables comprehensive identification of potential failure mechanisms. The scope of the necessary engineering assessment encompass full-ship finite element analysis under non-linear sea loads, spectral fatigue analysis, finite element lashing analysis, free and forced vibration analysis, and transient and impact load analysis. This paper describes key aspects of the DLA design philosophy such as non-linear sea loads, load combinations, various applications derived from full-ship finite element analysis. Several examples are given to highlight some critical failure mechanisms to be considered for ultra-large container carriers.

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