Assignment 2
1.velocity of sound to be calculated as we are aware with formula√E/√p
Here E=210000,p=0.0078
So we get velocity of the sound as 5188.74.
2.∆T=l/c for calculation the time step we can use this so here l=1000,c=5188.74
So we get T=0.19272.
3.As we know that the sound wave is the propagation wave that is applied and causes the shock and make vibration so the time step for above and this remains same.
4.Here the engine file is to be edited with the parameter called end time with time step so the value is to be edited with 0.19272.
5.frequency is calculated as F=Total time/no. Of frames.
Here total time is 0.19272,frames are 20 so we get frequency as 0.009636 so the frequency is replaced with this value.
6. As mentioned the frequency as remains same for these parameter in the engine file
save the engine file with these param. now. so that is 10.
7. 1D are created by creating the surface mesh on the other surface as per the quality standards described.
HOUSING tetra mesh model:
*Import the geometry of the housing using the import model option.
*Now first take the inner component and start working for creating the mesh by considering the below method.
*Now delete the solid of the component and select the surface and start mesh by using 2D mesh option.
*Select element criteria by choosing the element size option and mesh with trias.
*Now check the quality criteria as described above and deduce them to the leat value by considering all corrective option like edit element,clean up tools etc.
*Now get into the 3D panel and select tetra mesh option and select the element and start for 3 D mesh.
*Later check for the get collapse value as standard mentioned as 0.15 value and correct the failed element by varying the height by using distance option.
*similarly work the other component using the similar method and save the model.
ARM bracket model:
8.hexagonal mesh:
*Import the arm model by selecting the import geometry option and select the file to import.
*After import mesh the model with the 2D mesh model and use the element by myers and select the vertical surfaces so the the elements are drag on the whole base component.
*Now the whole base formed with the hexagonal elements.
*Now the arm curve by using the distance option mark the point on the arm curve and create the nnode at the center.
*Now select the element on the base that has to be spinned along the arm curve to maintain the connectivity.
*Now create the faces of the arm curve to match the elements of arm straight.
*Mesh the elements of the arm straight using the surface 2D mesh and match to the elements on the connecting face of the arm straight and match the connectivity with linear solid.
*Now mesh the Bose and match the connectivity with the arm straight and using the geom option from solid map drag the elements along the node path and line and match the connectivity with arm straight.
*Save the arm bracket which is formed hexagonal elements.
https://1drv.ms/u/s!Av1WlNmjfvAwgwdcZlktgWc_iewM?e=SggGkl
Note : images and edited enigine file is presented in the link fyi.