Week 4 - 2D Meshing for Sheet Metal

AIM- For the given CCB CAD model check the geometry cleanup if required take the midsurface and mesh it with given 2D elementquality criteria . project description component take for meshing ( cross car beam assembly) procedure for meshing 2D components 1) importing the cad model ansa.

project description-

component take for meshing.

PROCEDURE FOR MESHING THE 2D COMPONENT-

1) importing the cad model into ansa-

the cad model is imported into the ansa software by clicking file --new command.

2) geometry checks-

then the important step is to check the geometry of the cad model . this is help us clear all the surface erroer , unwanted cons and also for any dissuption placed in cad model .

this is can done by giving the command tools---checks ----geometry. and then you check for the geometry . some of all error will be thrown at by ansa.

and hence all the cad models, were check for clean geometry all their surface imperfections are fixed in the geometry check and once again release all the cons and give faces---topo.

then faces----orient command are used check the orintation is proper in all faces oif the cad geometry.

some of these error can be automatically resolved by the ansa by using the command right click+ fix in the check dailog box. the tripple con can be is cleared by releasing the cons and provided topo again by hidding the componenets nearby. before extarcting the midsurface of the components ,its important to measure their thickness . this can be acheived by usin g the command utilities----measure. and the choosing the extreme end of two hotpoints we can get thickness of the geometry.

the midsurface is extrtacted using the offset command using.

4) fixing quality criteria and mesh parameters-

once the mid surface is genrated , the cad model is now ready for the meshing and for that the quality criteria for the mesh is defined usi g a command utilitiues --- quality crieteria.

the offset by using the feature using tge making the midsurface in taking the half distance and then component is extracted.

then the switch the prsentation paranmetre tab graphic divison take put mark on elements% and choose the detail demand effect as more details.

then choose the utilities----parametre and give the target length as 5 and give the following setup to the mesh parameter dailog box.

then choose perimeter ----length command and choose gthe entire component and give the target mesh of the length value 5 . the same should be also done for the macro to get to get smooth surface before mesh.

and then the model should be checked for the de-featuring if wee see any cons for hotpoints which will tends to fail the quality criteria they can be using suppress using macros ---cut+right click ---delete option similarly the minimum length erroe can be solved by tha taking the peak value fillet and any suppresing the nearby cons.

conclusion- to give the all parameter and complete the assembly of each and evry part complete geometry cleanup and meshing and importanat its quality and thickness.