scholarly journals User defined nodal displacement of numerical mesh for analysis of screw machines in FLUENT

2019 ◽  
Vol 604 ◽  
pp. 012012 ◽  
Author(s):  
N Basha ◽  
A Kovacevic ◽  
S Rane
Keyword(s):  
Nodal Displacement

The Influence of Support Hardware and Piping System Seismic Response on Snubber Support Damping

1997 ◽  
Vol 119 (4) ◽  
pp. 451-456 ◽  
Author(s):  
C. Lay ◽  
O. A. Abu-Yasein ◽  
M. A. Pickett ◽  
J. Madia ◽  
S. K. Sinha
Keyword(s):  
Seismic Response ◽  
Fundamental Frequency ◽  
Damping Ratio ◽  
Damping Coefficient ◽  
Piping System ◽  
Nodal Displacement ◽  
Damping Coefficients ◽  
Fundamental Frequencies ◽  
Piping Systems

The damping coefficients and ratios of piping system snubber supports were found to vary logarithmically with pipe support nodal displacement. For piping systems with fundamental frequencies in the range of 0.6 to 6.6 Hz, the support damping ratio for snubber supports was found to increase with increasing fundamental frequency. For 3-kip snubbers, damping coefficient and damping ratio decreased logarithmically with nodal displacement, indicating that the 3-kip snubbers studied behaved essentially as coulomb dampers; while for the 10-kip snubbers studied, damping coefficient and damping ratio increased logarithmically with nodal displacement.

Application of QR Method for Analysis of Spatial-Mega Frame Structure

2011 ◽  
Vol 243-249 ◽  
pp. 6049-6052
Author(s):  
Wen Jun Pan ◽  
Xian Guo Ye ◽  
Lei Chang
Keyword(s):  
Finite Element ◽  
Variational Principle ◽  
Reliable Method ◽  
Frame Structure ◽  
New Approach ◽  
Nodal Displacement ◽  
Simplified Calculation ◽  
Node Displacement

With the generalized displacement parameters of spline knots chosen as basic unknowns, the node displacement functions of spatial mega frames were built up, then element node displacements could be expressed by these parameters. New stiffness equation of spatial mega frame was deduced according to energy variational principle. The nodal displacement and nodal forces were worked out by the displacement parameters of spline knots. Process of block assembling for spline-discretization matrix was introduced briefly. One spatial mega frame was calculated by QR method and different finite element softwares. Comparation among the results and those of references proves that QR method is exactly an economical, effective and reliable method for computation of spatial mega frames. It provides a new approach for simplified calculation to spatial mega structures, so has good theoretical and practical value.

scholarly journals Analysis & Design of Flyover by using Staad. Pro v8i

2021 ◽  
Vol 7 (03) ◽  
pp. 272-279
Keyword(s):  
Shear Force ◽  
Andhra Pradesh ◽  
Bending Moment ◽  
Nodal Displacement ◽  
Traffic Jam ◽  
Vehicle Load ◽  
National Highway ◽  
Live Loads ◽  
Analysis Design ◽  
Free Moment

As the population is growing, urbanization is caused which results in increasing of traffic with usage in more number of vehicles for different means of transport.As stated above the growth of population and the usage of vehicles for their different means will automatically result in increase in flow of vehicles which is called as traffic. To overcome the issue of traffic getting jammed (which means having obstacles for free moment or flow at a particular place), there are many different ways implemented to overcome it. When coming to Highways one of the efficient ways of overcoming it is construction of a flyover.Here in this project we are going to a design a flyover at Morampudi Junction located in Rajahmundry Andhra Pradesh along the National Highway 216A as a proposal in order to overcome the issue of traffic jam and also to reduce the rate of accidents occurring at the junction. By considering all the data collected conducting different examinations I am going to design and analyze the flyover using software STAAD.Pro V8i to study Bending Moment, Shear Force, Nodal Displacement values by considering various types of loads considered are Dead Loads, Live Loads, Wind Loads, Vehicle Load which are taken from Indian Standard Codes IS – 456, IS – 800 & IRC: 6 - 2016.

An Analysis on the Effect of External Shock Loads on Building Structure Vibration

2014 ◽  
Vol 513-517 ◽  
pp. 4135-4138
Author(s):  
Jian Wan
Keyword(s):  
Finite Element ◽  
Spatial Structure ◽  
Vibration Analysis ◽  
Element Model ◽  
Building Structure ◽  
Analysis Model ◽  
Shock Loads ◽  
Nodal Displacement ◽  
Structure Vibration ◽  
Elastic Mechanics

This paper studies how the external shock loads induces vibration, and proposes a method to analyze the effect of external shock loads on building structure vibration. On basis of elastic mechanics and dynamics theory, the method calculates pressure load on each bearing node of the building produced by finite element model in accordance with the nodal displacement equivalent principle, and takes the load as excitation to study vibration of the building structure. The accuracy of the analytical method is verified by comparing with classical theory and the analysis' results of other scholars. Experiments show that the vibration analysis model can efficiently perform analysis of vibration induced by uncoupled external shock for building with complex spatial structure.

A Smoothed GFEM Based on Taylor Expansion and Constrained MLS for Analysis of Reissner–Mindlin Plate

2021 ◽  
pp. 2150048
Author(s):  
Tang Jinsong ◽  
Qian Linfang ◽  
Chen Guangsong
Keyword(s):  
Taylor Expansion ◽  
Temporal Stability ◽  
Displacement Function ◽  
Least Square ◽  
Mindlin Plate ◽  
Square Function ◽  
Mesh Distortion ◽  
Nodal Displacement ◽  
Moving Least Square ◽  
Element Shape

Based on the Taylor Expansion and constrained moving least square function, a smoothed GFEM (SGFEM) is proposed in this paper for static, free vibration and buckling analysis of Reissner–Mindlin plate. The displacement function based on SGFEM is composed of classical linear finite element shape function and nodal displacement function, which are obtained by introducing the gradient smoothed meshfree approximation in Taylor expansion of nodal displacement function. A constrained moving least square function is proposed for constituting meshfree nodal displacement function. The merits of the proposed SGFEM, including high accuracy, rapid error convergence, insensitive to mesh distortion, free of shear-locking problem, no extra DOFs and temporal stability, etc., are demonstrated by several typical examples and comparisons with other numerical methods.

Numerical Assessment of Dented Pipe Using Inline Inspection Data

2020 ◽  
Author(s):  
Parththeeban Murugathasan ◽  
Ashutosh Sutra Dhar ◽  
Suborno Debnath ◽  
Abu Muntakim ◽  
Kshama Roy
Keyword(s):  
Fe Analysis ◽  
Remaining Life ◽  
Nodal Displacement ◽  
Life Estimation ◽  
Numerical Assessment ◽  
Nodal Displacements ◽  
Pipe Geometry ◽  
Inspection Data ◽  
Displacement Approach ◽  
Dent Depth

Abstract The current finite element (FE) assessment methods of dented pipes are based on specific dent profiles, which are generally created based on the shape of indenters. However, the actual dent profile in real case scenarios is mostly irregular in shape, depending on the cause of damage. In this paper, FE analyses of dented pipes using inline inspection (ILI) data are presented. Based on the ILI data, the dent profile is generated by applying the nodal displacements to all the pipe nodes. The validation of this nodal displacement approach is discussed in this paper. Besides, a parametric study is carried out to study the behavior of dent for different dent depth, pipe geometry, and pipe grades. The significance of residual stresses generated during the dent formation on the behavior of dented pipe during the service life is also discussed. Finally, the remaining life estimation of dented pipes according to the API 579-1 is presented using FE analysis results.

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