I'm new to fea but I want to learn in order for my final year engineering project's and I am kinda on my own here. What is it can somebody explain

Hello, does anyone know how to add a force on the top left edge of my part? I gave it a go creating a reference point in the middle of the edge and then creating a force on the RP. But I get error during analysis and I think it has to do with the lack of coupling constraints. But the thing is I don't understad how to use it. If I try to couple the reference point to the part it can only be coupled to an area. I think I'm missing something here but cant find any tutorials

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Has anyone used this approach to solving problems and benefited compared to traditional FEM? Have people experienced the benefit of a faster workflow? I have not personally taken the time to read through the literature to see whether the promise of actually achieving higher order continuity is possible.I know a lot of work is done by Tom Hughes and his students, but I am hoping someone can also point to specific resources to learn more about this.

I’ve tried to simulate a column buckling problem with the above boundary conditions. As shown in the image the top end is constrained only in the x and z translation direction. All the translations are constrained at the bottom end. Since a pinned support allows rotation, I haven’t constrained rotation. But I think all the constraints need to be defined and that’s why my model is giving an error. How do I define all the constraints?

Good afternoon, I am a student and not a professional. I need to see some tutorials to have some help for my coursework. I have tried to sign in to see some tutorials of JMag, but I wasn't able to sign in because I am a student. I looked for books, but I found one unfortunately it was in chinese. Is there a way I can get a book, or see some tutorials? On youtube, there is almost nothing. I am supposed to be doing a 2D electromagnetic FEA (finite element analysis) to characterise the behaviour of a surface-mount permanent magnet synchronous machine (PMSM).

Let us say I say a spring-mass-dashpot system (K,M and C) modelled using COMBIN14 and MASS21 elements. How do I perform a spectrum analysis where I apply a white noise of a value 1 (say from 1 to 20 Hz) wherein the damping is taken from the value C.

I looked at the ansys manual. It has apdl codes for spring and mass without a dashpot. I want to perform a spectrum analysis using the value C. The manual also suggests that spectrum anlaysis cannot be performed after damp or QRDAMP modal analysis. What do I do? It would be great if someone can direct me or guide me on how do I define damping in PSD analysis (but keeping in mind the method can be applied to not just sdof models)

I am interested in doing this eventually for complex MDOF systems with various values of C and eventually I want to do a spectrum analysis using the complex modes from modal analysis which considers C matrix. Does ANSYS support this?

Hi all I am working on a project which involves heat treatment of a component. When I perform normal fea the results are not able to predict it's fracture because the material is ductile but in reality when the part will undergo heat treatment it's ductility will reduce. I want to know how can I incorporate these heat treatment effects in my fea model. Thanks

Edit - I am performing a non linear static analysis, and the heat treatment penetration depth is 3 mm. Which means upto depth if 3 mm I will be having a different material than the parent material.

The title says it all really. i can minimise mass, put a stress limit in, but cant find a minimise strain criteria.

I thought i could do it with a user defined criterion buit apparently not?

Any advice would be grreatly appreciated.

Beside manual calculation to understand what results you need to expect, are there any other technique to check are your results correct? Also due curiosity, is it a rule that reaction forces have to be same as load force?

I have a project that I need to do which involves designing a water jet based cleaner for dried paint on fixtures in a consumer goods manufacturing plant. How do I go by it? Kindly let me know. What kind of analysis is the best and how do I show the deletion of elements whle at it

I'm looking to understand what will be the career of an R & D specialist in the glass and industry , What are the companies which usually hire to these job profile and how is the work life balance.

I've removed the equivalence and free edges. But I couldn't make the two surfaces as one.(This is after meshing) What am I missing?

I have been trying to run a blast analysis, since we need to show element deletion for our water jet based cleaning project. But idk how to approach it so blast loading is the best I could find, but I am new to LS Dyna, and have been getting this message while being unable to run a single file till now. What do I do pls help.

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Hello everyone, Im kinda New to FEA.

In classes we saw a ballistic case of a ball piercing through an aluminium plate (Shell element).

It was quite easy to simulate, the Ball goes through and the plate gets pierced in hyperview

But now i try to do the same thing with a 3D meshed plate (160x160x5). 3 elements in thinkness direction. and it Just doesnt work.

Error message ; EXCEEDED EPS_MAX ON SOLID ELEMENT NUMBER 60412: DEVIATORIC STRESS SET TO 0 ON INTEGRATION POINT 1 AT TIME : 0.3100

I tried with ball in RW and meshed in Shell (min gap 0.3) I put a failure mode with some D1 D2 D3 D4 D5 parameter i found for aluminium.

What am i doing wrong?

Can someone tell me the difference between those two cards? I cannot really decide if I should use one or the other.

In terms of working principle/usage cases... Thx

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I guys, i'm simulating what's ahppening when you transport a generic load with a truck, by using supports that raise the load from the truck floor and chains to secure the load to the truck. Acceleration is applied as a force on the CoG of the load.

I want to find the chains forces and Von Mises stresses acting on supports. I'm using Simcenter Nastran non-linear SOL106, chains are simulated with CBUSH elements with non-linear axial stifness in such a way that they can react only in traction. I'm struggling with boundary conditions: truck floor is entrirely constrained, but standard Simcenter's friction or frictionless surface contacts fail to converge. I also tried using SOL 401, but it also fails to converge.

My other option is to use CGAP elements instead of surface contacts, but i really don't like this solution. First of all, i know several methods to evaluate their axial stifness, but different formulas gives very different results. Second, if this axial stifness is set too high (theoretical value from one of the formulas) the solution doesn't converge.

Any idea of to model this problem?

Many thanks

Hi, could you recommend some beginner friendly videos/websites to start with PyNastran? Any advices on how to study it would be helpful as well

Thank you i

So, i was doing a creep analysis, following a youtube tutorial. abaqus shows simulation is completed. but the upper sheet isn't merging/ touching with the die. what to do?

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Why do recently graduated software engineers earn more than engineers with extensive knowledge of finite element analysis, even those with a Ph.D.?

Why do recently graduated software engineers earn more than engineers with extensive knowledge of finite element analysis, even those with a Ph.D.?

I'm trying to work out if there's anything I can do (workstation wise) to reduce run times with Creo Simulate Advanced.

I'm running static analysis mainly, large deformations with contact.

I feel like I'm not getting everything out of this workstation based on what Task Manager is telling me. For example below is performance utilisation comparing idle background vs. running an analysis.

CPU idle = 12% / FEA = 40% RAM idle = 14.6GB / FEA = 15.0GB (total installed is 32GB) Disc idle = 0% / FEA = 2% GPU 1 0% / 1 % GPU 2 0% / 0%

Nothing seems to be utilised over 50%. I'm particularly surprised by such low RAM utilisation - only about 400MB higher than when sitting doing nothing! I have my config setting "sim_solver_memory_allocation" set to 16000 but it doesn't seem to be using it.

Anyone using Creo and have any tips for using more computation power?

I am trying to couple Finite Element Method (FEM) and Discrete Element Method (DEM) using Kratos Multiphysics. Anyone with an idea of how it can be done through GiD or directly in python as I am relatively new to this field.

I had done a 2D surface fem analysis. I ran the program and tried to access results but i get an error like this.

An internal error occurred when retrieving Direct Results Access data in routine: "DraGetStateData"

What mistake have i done?

Hello! I'm currently working on a design that incorporates flexible locking tabs as the main feature and I am running FEA simulations on the tabs to ensure that they won't break during use. They are being made from a 20% glass filled polycarbonate with a 12,000 psi tensile strength and 700,000 psi tensile modulus.

All of my simulations are coming back with stresses well over the tensile strength (~30,000 psi) meaning that the part should be breaking. However, I have a machined sample from the same material that has passed all of the necessary flexure tests. I have looked over the simulation set up and conditions and nothing seems to be wrong so the only thing that I can think of is the material profile was created wrong. (Using Solidworks non-linear dynamic FEA)

Has anyone had success simulating a similar material? I'm assuming that the material is isotropic due to the shreading of the fibers as well as to simplify the simulation

(Normally this would not be a problem since the part is not breaking but I am planning on switching materials so I want to know if the other material will fail before purchasing materials/molds)

How would I set up a thermal model in creo simulation or creo ansys thermal simulation to understand the temperature gradient in a 1” cube of epoxy with following parameters: Starting temp 120F Cooled in ambient environment of 68F Natural Convection cooling on all sides of the cube I’m trying to understand what the temperature gradient looks like when any of the cube external surfaces hit 80F.

How can I xolot rst file based on material ID or based on some other possible parameter?