Non linear analysis using optistruct

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello folks,
I am doing geometric non linear static analysis on a structure and got stuck into some elemental problems

under the material section,
material - matx02

some parameters are given such as

A- plastic yield stress

B - plastic hardening parameter

n - plastic hardening coefficient

C - strain rate coeff.

EPSmax. max possible stress

 

my questions (for titanium ti6al4v)

1. value of A: as per wiki it should be in 90-130 MPa but when I saw some papers value for yield stress was >900MPa

2. B- nothing got from google. what it actually signifies in reality. Please explain.

3. EPSMAX: does its value should be ultimate tensile stress.

 

is there any website available where one can find the values of any material( specially - ti6al4v) in exactly these parameters?

Has anyone got a research article or paper regarding this topic: 'Geometric Non linear compressive analysis of Ti alloy using optistruct'

 

Thanks n regards 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited March 2017

    Hi @Ashu

     

    I would suggest to get in touch with any supplier or refer to material supplier manual for material properties for a specific grade.

     

    EpsMax is the failure plastic strain and when plastic strain reaches this value or over it, elements are deleted.

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