What is the difference between writing UMAT and VUMAT for shell elements? And what points must be considered in writing user mats for shell elements?

Hi all researchers I'm writing user material for shell elements. For writing VUMAT abaqus says that I must write constitutive equation for plane stress condition and I must define thickness strain...

04 May 2015 7,814 2 View

How to define a strain rate dependent pressure amplitude in Abaqus?

Hi all docs and engineersI'm modeling inflation of a polymer sheet under a constant pressure load. i wrote UMAT for viscoelastic behavior of the polymeric sheet. My constitutive equation holds for...

02 March 2015 2,275 4 View

In UAMP subroutine how can I specify props in abaqus CAE?

Hi researchers In UAMP there are props variables like UMAT subroutine but i don't know how to specify constants in abaqus cae like UMAT. in UMAT you specify props in property module but where...

01 February 2015 5,743 6 View

How do you use multiple user subroutines in Abaqus?

Hi everyone, I need to use two user subroutines UMAT and UAMP in abaqus. As you know in UMAT you can use props to specify matrial constants. In UAMP there are props and nprops to specify constants...

01 February 2015 9,601 8 View

How do you model the inflation of a polymeric sheet under a constant pressure (Thermoforming)?

Hi friends I'm trying to model inflation of a rectangular sheet in abaqus for thermoforming process (Free forming). Material behavior is viscoelastic and I wrote a user subroutine for it. My...

01 February 2015 3,515 7 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

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02 March 2021 3,060 3 View

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02 March 2021 932 1 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View