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MIT FInal Year Projects

Simulation of Impact of a glass slab on floor

Date: Wednesday, May 08, 2013
Designer: Engr. Ammar Aziz                                                                                                       Study name: Impact Testing ; Analysis type: Drop Test

 

 

 

 

 

Description                                                                                           Impact Testing of a glass slabs which falls from 0.5m onto a rigid floor.

Model Information:

• It is a solid body.
• Mass:0.0954223 kg
• Volume:3.88274e-005 m^3
• Density:2457.6 kg/m^3
• Weight:0.935139 N

Analysis Type:

• Drop Test

Mesh Type:

• Solid Mesh

Large Displacement

• ON

Setup Information

Type	Drop height
Drop height from lowest point	0.5 m
Gravity	9.81 m/s^2
Gravity Reference	Face<1>
Friction Coefficient	0
Target Stiffness	Rigid target
Critical Damping Ratio	0

Result Options:

Solution Time After Impact	51.02 microsec
Save Results Starting From	0 microsec
No. of Plots	25
No. of Graph Steps Per Plot	20
Number of vertex	0

Units:

Unit system:	SI (MKS)
Length/Displacement	mm
Temperature	Kelvin
Angular velocity	Rad/sec
Pressure/Stress	N/mm^2 (MPa)

Material Properties:

Name:	Glass
Model type:	Linear Elastic Isotropic
Default failure criterion:	Mohr-Coulomb Stress
Elastic modulus:	6.8935e+010 N/m^2
Poisson's ratio:	0.23
Mass density:	2457.6 kg/m^3
Shear modulus:	2.8022e+010 N/m^2
Thermal expansion coefficient:	9e-006 /Kelvin

Mesh information:

Mesh type	Solid Mesh
Mesher Used:	Standard mesh
Automatic Transition:	Off
Include Mesh Auto Loops:	Off
Jacobian points	4 Points
Element Size	0.00338735 m
Tolerance	0.000169367 m
Mesh Quality	High

Mesh information: Details

Total Nodes	12406
Total Elements	11600
Maximum Aspect Ratio	23.421
% of elements with Aspect Ratio < 3	96.8
% of elements with Aspect Ratio > 10	0.343
% of distorted elements(Jacobian)	0
Time to complete mesh(hh;mm;ss):	00:00:05

Study Results

Name	Type	Min	Max
Stress1	VON: von Mises Stress	0.880476 N/mm^2 (MPa)	37.404 N/mm^2 (MPa)

Name	Type	Min	Max
Displacement1	URES: Resultant Displacement	0.0745154 mm	0.0832629 mm

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