How can I conduct a proper modal testing on a beam?

I intend to conduct a modal testing on a clamped-clamped steel beam in ABAQUS. -The input is random signal with normal distribution, zero mean, and maximum amplitude of 5 (N). -Duration of loading...

07 August 2018 7,344 5 View

Would anyone suggest me a paper on the effects of temperature on natural frequencies of a beam?

I need to verify my models in ABAQUS, so I need a paper as a reference, what I need is properties of the beam's material, clear thermal loads, and the frequency changes. thanks in advance.

03 April 2018 6,919 2 View

How much temperature gradient is common in bridges?

I am about to perform an analysis on effects of temperature gradients on natural frequencies of an I-shape steel beam with ABAQUS, would anyone give me clues on how long I should presume for...

03 April 2018 1,349 4 View

Effects of temperature on natural frequency in ABAQUS?

I want to simulate the effects of temperature variations on natural frequency of a clamped-clamped beam in ABAQUS; (thermal modal analysis) In step-1 the beam temperature rises from -30 C to...

31 December 2017 8,817 9 View

Wavelet coefficients acting as novelty index in neural network method damage detection?

It would be appreciated naming some good papers with the topic

07 August 2017 1,037 2 View

What's the physical meaning of complex mode shapes?

in case of non-proportional structural damping, our mode shapes of a mdof system becomes complex according to the attached photo in case 1(c) from "Modal Testing: Theory, Practice and Application"...

02 March 2017 9,946 8 View

Design of FRP for members subjected to axial force?

02 March 2017 6,478 16 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View