I have a new intriguing geometric problem. Do you have any ideas on how to solve it?

How to combine two geometries in LAMMPS ?

I am trying to simulate contact angle of water on a quartz slab using LAMMPS. I have created and equilibriated the quartz slab and the water cluster separately. Now I want to create a composite...

17 February 2021 5,884 2 View

How to mesh complex geometry?

I have been trying to mesh some complex geometry and have been having issues. I have attached images of the geometry in question. This structure is very large in size but has some comparatively...

05 February 2021 6,379 5 View

Please recommend me the proper steps (blocking method) to generate Hexahedral mesh of the following geometry inside ICEM-CFD?

I am facing an issue while blocking for the geometry mentioned in the image. After blocking it ends with a triangular block due to its shape. How to create a hexahedral mesh for this geometry in...

02 February 2021 888 1 View

How to find nature of extremum of a functional? what are the mathematical prerequisites to understand it?

For a function, usually sign of second derivative (and if it is zero, even/odd index of higher order derivative whose numerical value is zero) is enough to detect whether the extreme point is...

25 January 2021 7,703 3 View

Frequency calculation with TDDFT???

Hi, I have been trying to calculate the frequency vibrations of the excited state S1 of an organic molecule (24 atoms). The geometry optimisation of the excited state converged smoothly howerver...

22 January 2021 1,463 3 View

Doubt in DFT geometry preparation?

Hi all, I am trying to perform some ab inito DFT calculations using cp2k code. I have a unit cell of 120 atoms and would like to know how to refine or reduce the number of atoms in the unit cell...

20 January 2021 6,024 3 View

In Ansys APDL the stiffened plate girder is not getting meshed after gluing! What to do?

This is a model of a stiffened plate girder. The APDL code is provided below for its geometry generation. It is not getting meshed after gluing all the volumes. If the volume is subdivided in the...

18 January 2021 4,839 4 View

How to implement truss element with no effect of compression in ansys workbench static structural?

I was trying to add ligaments in cervical spine geometry. There it is mentioned in the existing literature to add the ligaments in the geometry as truss element with no effect of compression....

03 January 2021 2,205 0 View

Hi, How can choice the most adequate mesh for a geometry on Ansys fluent?

Users of Ansys Fluent

31 December 2020 3,019 7 View

How to solve this FEM Problem in Abaqus?

Hello, I am a student and I have been trying to mesh this part but I am failing to mesh it with smaller elements because I get a warning that some of the marked elements are of poor quality...

15 December 2020 5,728 3 View

Sergiy Gladun

It is easy to see that angle AMC is 135 degrees. Therefore, point M lies on a circle with center at point B and radius BA.

Therefore angle ABM=90 deg-2alpha.

Javier López Wong

Dinu Teodorescu

In the above geometrical structure, find the value of tan(alpha) if d(M,AD)=sqrt(2) d(M,AC), where d(M,AD) and d(M,AC) are the distances from the point M to AD, respectively to AC.