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  • Users: bongirs
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  1. bongirs

    Failure criterion for crack development of metals?

    Hello, I have seen that in a lot of industries, the failure criterion is unsigned von Mises stress. Sometimes it may refer to yield stress, sometimes ultimate stress depending upon the scenario simulated. My research peer suggested another approach that I never heard before. Use signed von...
  2. bongirs

    Is RADIOSS a bad solver?

    Hello, I am performing explicit dynamic non-linear contact analysis (drop test) and the results are quite off from physical testing. If however, the same parameters are used for solving with Abaqus then it is quite closer to reality. So I am just checking whether my findings are in line with...
  3. bongirs

    Convergence analysis of finite element analysis?

    Hello, 1. I have always done convergence analysis by checking the maximum stress for a scenario and seeing if it converges towards a value upon mesh refinement. However, my professor recommended a better method. He told me to choose a geometric point (x,y,x) and always have a node at this point...
  4. bongirs

    What is implicit and explicit analysis in FEA?

    Hello, I am trying to understand what it means when a software says that it has an implicit solver as well as explicit solver. Often I find that people try explain the difference by using quasi-static vs time dependent analysis, but I know that that is not the correct answer. Additionally, how...
  5. bongirs

    FEA software developers guide/forum/book/community?

    Hello all, I am a Mechanical engineering graduate student with a couple of years of professional experience in FEA, as well as my research project is in FEA. It is my personal desire to develop a basic FEA software of my own. I have the software development skills, but do not know the...
  6. bongirs

    Element Stiffness Matrix Formulae for common elements?

    Hello, I am in need of developing a mini-FEA software for my project and need some help in understanding the theoretical aspects of FEM. Since I do not have the differential equations of the objects, I am restricted to using the strong form approach instead of the weak form. I tried looking up...
  7. bongirs

    Check potential energy of elements after FEA?

    Hello, In my Finite Element Methods course I learned that the best way to check whether a FEA is precise or not based on the potential energy of the elements. We could do this on paper using the differential equations for simple beams. But for complex objects, when I do FEA in a software how do...
  8. bongirs

    Simulate adhesion between rubber and plastic?

    Hello, I have received a task of simulating a difficult scenario. Rubber (Elastollan 1185A) is over moulded over a plastic part (PBT GF20). The rubber stays on the part due to adhesion between the contact region. My task is to simulate the situation where the rubber peels off from the plastic...
  9. bongirs

    How to obtain material properties of plastics for non-linear analysis?

    Hello, I am a design engineer and want to start a trend of using FEA during the design process in my group. As of now, for some months I have been doing push button analysis using Creo Simulate for linear behaviour. It has been a progressive journey from "relative" comparison of concepts to...
  10. bongirs

    Forces varying with time?

    Hello, I am trying to learn Creo Simulate 2.0 and having a hard time applying time varying forces. I want to have forces something like this: Force1: 50N from 0 to 0.5sec Force1: 100N from 0.5 to 1.2sec Force2: linearly increasing from 200 to 250N from 1 to 2 sec Simulate does not show any...
  11. bongirs

    Price of FEA software?

    Hello, I am considering starting my FEA consultancy. So I would like to know the prices of FEA software packages. It would be great to understand the fixed initial seat price as well as the yearly price of the packages. I have tried searching a lot using Google but in wain...

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