How to calculate strength degradation in a hysteresis loop (cyclic loading)?

I understand that the peak load at that specific deformation is to be taken but how do we get the % in degradation (is it by % decrease from one load to another)? Additionally, do we compare peak...

09 October 2019 9,975 5 View

Why do some researchers draw coordinate-grid lines on concrete joint especially during beam-column connection testing?

Was it to physically identify crack orientation/inclination and differentiate it between lateral, flexural, shear cracks etc? Or is it for some other function i dont know about.

03 April 2019 4,918 5 View

Is the area under the load-deflection curve of concrete tested under direct shear considered as "shear toughness"?

I tested 100x100x500mm concrete prisms under direct shear using the JSCE-SF 6 standards. Is calculating the area under the load-deflection curve considered as shear toughness or shear energy? The...

31 December 2018 3,493 1 View

What is the function of Field Output Request, specifically the 'every n time increment' in Abaqus?

I've read the manual but i cannot seem to visualize the definition. Say i'm doing a simple reverse cyclic test for a concrete for say, 50mm displacement in 2400 seconds. How does 'every n time...

10 November 2018 2,327 0 View

In Abaqus, how can i select the Reference Point in the .odb output?

I am trying create an XY data from the model via a unique nodal. But the reference point in the .cae model is not visible in the .odb output. Hence i was unable to 'select it from viewport'. Is...

10 November 2018 1,907 4 View

How to model an Engineered Cementitious Composite in Abaqus?

I've tried using the Concrete Damaged Plasticity parameters but the model just would not work. I'm trying to model a beam-column joint using ECC as the joint material (region intersection between...

10 November 2018 7,842 5 View

How to calculate inelastic strain from concrete uniaxial stress-strain curves?

I conducted compressive and tensile concrete uniaxial test for the Concrete Damage Plasticity (CDP) data in Abaqus. But I only have normal strains under stress, how do i get the inelastic strain?

08 September 2018 4,148 2 View

Is it realistic to have a concrete material with 35 MPa compressive strength (28-days) but with only a 6900Mpa Elastic Modulus?

I conducted a compressive uniaxial stress-strain test for normal concrete, it achieved a peak stress of 35 MPa but when i calculated the young's modulus from the stress-strain curve in excel, it...

08 September 2018 177 14 View

What does a negative inelastic strain mean? should it be included as CDP parameters in Abaqus?

I produced negative inelastic strain in my stress-strain concrete curves (i noticed that mostly negative value were at the elastic/early stage). Do i take the negative inelastic strains and...

08 September 2018 5,279 1 View

What does the B50 grade mean in concrete strength?

Does it have any relevance with M50 and C50 concrete strength? In terms of designing it, will using a normal concrete design method achieving 50MPa considered a B50 grade? Thanks in advance.

06 July 2018 6,003 20 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

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View