Tool Test 1
TOOL TEST
MESHING OF SWITCH PANEL AND SHEETMETAL COMPONENT USING ANSA
AIM - To check for the geometrical errors and mesh with the given quality criteria after meshing the componenet the thickness has to assign for the given component
Quality criteria-every product which is to be in produced will go for some quality checks.if the quality checks fails the steps like boundary condition and applying loads must be fail.for this reason element quality check is performed.to identify the quality failure the quality parameters is entered as put data. the quality criteria is shown in below
|
Target/Average length |
4 |
|
|
2 |
Minimum Length |
2 |
|
3 |
Maximum Length |
6 |
|
4 |
Aspect |
3 |
|
5 |
Warpage |
15 |
|
6 |
Skewness |
45 |
|
7 |
Jacobian |
0.7 |
|
8 |
Minimum Quad Angle |
45 |
|
9 |
Maximum Quad Angle |
135 |
|
10 |
Minimum Tria Angle |
30 |
|
11 |
Maximum Tria Angle |
120 |
|
10 |
Tria Percentage |
15 |
IMPORTENT THINGS WHILE MESHING
THERE SHOULD NOT BE ANY OPPOSIT TRIAS IF IT OCCURING USE SPLIT OPTION TO AVOID
SMOOTHING COMMAND IS USED FOR SMOOTHENING MESH FOR GETTING GOOD MESH FLOW
ADJACENT TRIAS MUST BE REMOVED
ALWAYS MESH BY AWAIRING OF QUALITY REQUIRMENTS TRIAS SHOULD NOT BE PRESENT AT THE EDGES OF THE COMPONENT AND SHOULD NOT BE ORIGINATED FROM PERIMETERS
METHODOLOGY
1.Import cad geometry
2.Geometry cleanup
3.Midsurface genaration
4.meshing
5.element quality check
6.mesh improvement
1.IMPORT CAD GEOMETRY
import the switch panel ansa igs file in to ansa software. set the proper orientation ,change the perimeter length in to
1
Quality criteria-every product which is to be in produced will go for some quality checks.if the quality checks fails the steps like boundary condition and applying loads must be fail.for this reason element quality check is performed.to identify the quality failure the quality parameters is entered as put data. the quality criteria is shown in below
|
Target/Average length |
4 |
|
|
2 |
Minimum Length |
2 |
|
3 |
Maximum Length |
6 |
|
4 |
Aspect |
3 |
|
5 |
Warpage |
15 |
|
6 |
Skewness |
45 |
|
7 |
Jacobian |
0.7 |
|
8 |
Minimum Quad Angle |
45 |
|
9 |
Maximum Quad Angle |
135 |
|
10 |
Minimum Tria Angle |
30 |
|
11 |
Maximum Tria Angle |
120 |
|
10 |
Tria Percentage |
15 |
IMPORTENT THINGS WHILE MESHING
THERE SHOULD NOT BE ANY OPPOSIT TRIAS IF IT OCCURING USE SPLIT OPTION TO AVOID
SMOOTHING COMMAND IS USED FOR SMOOTHENING MESH FOR GETTING GOOD MESH FLOW
ADJACENT TRIAS MUST BE REMOVED
ALWAYS MESH BY AWAIRING OF QUALITY REQUIRMENTS TRIAS SHOULD NOT BE PRESENT AT THE EDGES OF THE COMPONENT AND SHOULD NOT BE ORIGINATED FROM PERIMETERS
METHODOLOGY
1.Import cad geometry
2.Geometry cleanup
3.Midsurface genaration
4.meshing
5.element quality check
6.mesh improvement
1.IMPORT CAD GEOMETRY
import the bottle cap ansa igs file in to ansa software. set the proper orientation ,change the perimeter length in to
1
MID SURFACE GENARATION IN ANSA
THE GIVEN MODEL IS COMPLEX AND HAS VARIABLE THICKNESS. HENCE DIFFARENT MID SURFACE EXTRACTION METHODS ARE ADOPTED
1. OFFSET
2.FACES >MIDDLE
3.FACES>MULTY
4.CURVES>MIDDLE
MESHING USING BEST,SPOT ,FREE ALGORITHAMS
ASSIGNING SUITABLE PIDS
RESULT _THE GIVEN SWICHING PANEL IS MESHED AND ASSIGNED THICKNESS
MODEL 2 MESHING PF SHEETMETAL COMPONENT
Quality criteria-every product which is to be in produced will go for some quality checks.if the quality checks fails the steps like boundary condition and applying loads must be fail.for this reason element quality check is performed.to identify the quality failure the quality parameters is entered as put data. the quality criteria is shown in below
|
Target/Average length |
4 |
|
|
2 |
Minimum Length |
2 |
|
3 |
Maximum Length |
6 |
|
4 |
Aspect |
3 |
|
5 |
Warpage |
15 |
|
6 |
Skewness |
45 |
|
7 |
Jacobian |
0.7 |
|
8 |
Minimum Quad Angle |
45 |
|
9 |
Maximum Quad Angle |
135 |
|
10 |
Minimum Tria Angle |
30 |
|
11 |
Maximum Tria Angle |
120 |
|
10 |
Tria Percentage |
15 |
IMPORTENT THINGS WHILE MESHING
THERE SHOULD NOT BE ANY OPPOSIT TRIAS IF IT OCCURING USE SPLIT OPTION TO AVOID
SMOOTHING COMMAND IS USED FOR SMOOTHENING MESH FOR GETTING GOOD MESH FLOW
ADJACENT TRIAS MUST BE REMOVED
ALWAYS MESH BY AWAIRING OF QUALITY REQUIRMENTS TRIAS SHOULD NOT BE PRESENT AT THE EDGES OF THE COMPONENT AND SHOULD NOT BE ORIGINATED FROM PERIMETERS
METHODOLOGY
1.Import cad geometry
2.Geometry cleanup
3.Midsurface genaration
4.meshing
5.element quality check
6.mesh improvement
1.IMPORT CAD GEOMETRY
import the bottle cap ansa igs file in to ansa software. set the proper orientation ,change the perimeter length in to
1
Quality criteria-every product which is to be in produced will go for some quality checks.if the quality checks fails the steps like boundary condition and applying loads must be fail.for this reason element quality check is performed.to identify the quality failure the quality parameters is entered
|
Target/Average length |
4 |
|
2.Geometry cleanup
3.Midsurface genaration
4.meshing
5.element quality check
6.mesh improvement
2.GEOMETRY CLEANUP
To genarate fem we will go for geometry cleanup
surface patch ups ,creating new surfaces,eliminating unwanted triple cones in unwanted area,converting single cones to double cones in necessary area are comes under geometry cleanup phase. ANSA has some option to rebuild the surfaces for some extend
CAD MODEL NEEDS TO BE IMPORTED IN TO ANSA GUI.THIS IS DONE BY FILE >OPEN>SELECT CAD FILE>OPEN
THEN CAD FILE WILL BE OPENED IN ANSA SINCE THE PLATFORMS IN CAD AND CAE ARE DIFFARENT HENCE THERE WILL BE MANY TRANSLATIONAL ISSUES IN THE MODEL THAT IS IMPORTED. FIRST WE NEED TO TOPOLOGICALLY CLEAN UP THE HOOD COMPONENT TO TOPOLOGICAL CLEANUP THE COMPONENT SHOULD BE IN TOPO MODULE BEFORE THAT CHECK THE TOPOLOGICAL ERRORS OCCURED DUE TO THE PLATFORM CHANGE BY USE OF CHECKS MANAGER IN ANSA FOR THAT GO TO CHECKS MANAGER>GEOMETRY>EXECUTE SO WE CAN FIND THE TOPOLOGICAL ERRORS IN THE MODEL WE CAN GO TO EACH PART AND RECTIFY THE ERRORS
3.MIDSURFACE GENARATION IN ANSA
AS SHEET METAL HAS UNIFORM THICKNESS AND THE COMPONENET IS IN SYMMETRY SO WE CAN MAKE 2 HALVES OF COMPONENT USING PLANE CUT
EXTRACT MIDSURFACE USING FACES>OFFSET
4.MESHING
USING SPOT MESH ,BEST,FREE ETC
RESULT-THE GIVEN SHEET METAL COMPONENT IS MESHED