Spyros Asrva

15 Questions 13 Answers 0 Followers

Questions related from Spyros Asrva

How to define time stepping routine Φ in multigrid reduction in time?

Let's say we have a simple examle ut=Δu(x,t) 1D heat equation.How to define time stepping routine Φ?

10 October 2019 4,831 2 View

Why different meshes give total different results in Abaqus model?

I am studying a 2D model for ideal plastic case.I am confused why different element size gives different results,I know that more elements give better results but at least the results should be...

09 September 2019 6,401 6 View

How to deal with locality problems in ccNUMA architectures?

I'm studying Locality optimizations on ccNUMA architecture.I've started reading the book Introduction to high performance computing for scientists and engineers but there is a something that i...

06 June 2019 9,542 1 View

How to derive the shape functions for a serenditipity 2D element?

How to derive shape functions from a serendipity 2d element with nodes placed on arbitrary positions?

03 March 2019 8,481 3 View

Does the order of shape functions affect the continuity of stress field in linear fem?

If we use higher order shape functions (for example in a truss element) does this increase the continuity of stress field or the stress will remain discontinuous?

02 February 2019 3,932 4 View

Does hourglass instabilities exists in a Q4 elements with 2 Gaus points?

Does hourglass instabilities exists in a Q4 elements with reduce integration using 2 Gaus points?

02 February 2019 4,089 8 View

Why full integration FE elements are over stiff?

Why full integration FE elements are over stiff desping reduced ones?

02 February 2019 5,518 4 View

How can I run a project made in abaqus 2018 version in a 2016 version?

01 January 2019 10,044 4 View

How to solve thermomechanical problem?

I am new in abaqus and I have a problem in order to solve a thermomechanical problem.Can you please tell how to define the refference temperature in my model? I tried to but I think my results...

01 January 2019 8,375 8 View

Why Abaqus uses only Serendipity elements for meshing?

As far as I know(correct me if I am wrong) abaqus uses only serendipity elements.Why is this happen?Can I use lagrange elements too? Also can you please tell the cases when serendipity elements...

01 January 2019 5,842 3 View

Can we have a mixed mesh with 2D plane elements and bernoulli beams?

Is it possible to have a mixed mesh with plane elements(plane stress/strain) and bernoulli beams?For example if we have a CST element connecting with a beam at one node.In that case,in this node...

01 January 2019 4,608 3 View

How to increase continuity in FEM?

My question is how to increase the continuity of displacements in case of truss or plane elements. For example from C0 continuity to C1.Is this possible?

01 January 2019 376 5 View

Which is the effect of C-1 continuity in FEA regarding stresses?

As we use C0 continuity for displacements for truss and plane elements how the C-1 continuity os stress and strain affect our problem? Can someone enlight me which is the physical meaning on this...

01 January 2019 2,571 3 View

How to mesh a pipe in abaqus?

Guys I'm new in abaqus and I have some problems.I am struggling to mesh a flanged pipe.I know that I have to create partitions but I can not do it.Any suggestions?

01 January 2019 9,778 6 View

What are the boundary conditions on the interface between piston head,pin and connecting rod?

I want to ask about BC's on the interface between piston head,pin and connecting rod.Should I apply some BC's for static analysis there ir the restrains are considered from abaqus?

01 January 2019 6,427 2 View