M.S. in Mechanical Engineering

University of Illinois at Chicago

Design Portfolio Aniket Burde

Surgical Robotic Arm While working on a project for coursework, I designed

this robotic arm assembly CAD model that can be

implement in use for surgical purposes.

After consulting with Dr. Amirouche, PhD, we created

a CAD model to make precise cut prior to the surgical

operation.

The material considered for the base of the arm was

cast iron. The links and knife were made up of

aluminum.

The sole purpose of the robotic arm was to make

precise cut in the surface of the skin. The exact cut will

allow the doctors to work with ease.

Top Left – The original CAD model of the surgical

robotic arm

Bottom Left – The cutting knife that acts as the cutting

tool from the tip of the arm.

Analysis of Surgical

Robotic Arm Once the designed was completed and verified, there

was a need to analyze the knife for stress distribution

and displacement.

There are two main tasks of the knife: penetration and

slicing. The penetration was assumed to be 2

centimeters with slicing of about 10 centimeters. This

will get a resistance of 170 psi.

Once the analysis was done, the displacement and stress

distribution were found out.

The overall displacement in all the direction was found

to be 5.626 micrometer. The maximum stress that it

could sustain was 1126 MPA.

Top Left – The total sum displacement of the knife of

surgical robotic arm.

Bottom Left – The maximum stress that the cutting knife

can sustained.

Go Karting Car Chassis I engineered this chassis for the Go Karting car for the

use on the 2015 University of Pune, India Go Karting

race car.

After interviewing the driver and the Professor, for

the preference and material selection.

The complete designing was done in SolidWorks,

keeping in consideration about safe and lightweight

design that could sustain 1500 N force.

The complete chassis was constructed with 1-inch

stainless steel pipe welded together.

Left – The constructed chassis with 1-inch stainless

steel pipe.

Analysis of Chassis Once the designed was completed and verified, there

was a need to analyze the chassis for stress

distribution and displacement.

There are two main tasks of the chassis: support the

entire car and avoid the crash. To analyze it for crash

we had to assume the force of 1500 N.

Once the analysis was done, the displacement and

stress distribution were found out.

The overall maximum displacement in all the direction

was found to be 47.03 millimeters. The maximum

stress that it could sustain was 813.36 MPA.

Top Left – The total displacement distribution of the

chassis.

Bottom Left – The stress distribution in the chassis

which it can sustained.

Design Intent The chassis was built with welding together of 1-

inch carbon steel pipe.

The steering wheel and connecting rod was also

fabricated using carbon steel.

The bumpers were fabricated using steel sheets and

rectangular pipe.

The braking assembly was constructed using 6061-

T6 aluminum.

The engines and tires were bought from a vendor as

per the guideline of the competition.

Left – The complete constructed go karting racing

car.

Single-Axis Solar

Tracker I designed this CAD model of single axis solar tracker

for a senior-year project in my bachelor’s degree at

University of Pune.

The main motive between this was to track the sun’s

movement, so that the solar panel could store more

energy with greater solar absorption efficiency.

The designing was carried out in SolidWorks, keeping

in consideration about the tilt angles and solar panel

weight.

The complete framework was fabricated using 1-inch

by 1.5-inch steel rectangular frame welded together.

Left – The complete assembly of single axis solar

tracker

3D Assembly: Lock and

Key This CAD model of Lock was designed using

SolidWorks as a top-down assembly rather than

designing every part individually.

The designed had to be kept with a large tolerance as

it was going to be 3D printed and later assembled

together.

The lock and key were printed using PLA material on

Ultimaker 3 Printing machine.

Once the lock was assembled, after quality inspection

and testing for dimensional accuracy. The shackle was

redesigned and reprinted to get the exact complete

assembly as required.

Top Left – The CAD model cut view of the lock. The

upper housing missing in the picture.

Bottom Left – The real 3D printed lock using PLA on

Ultimaker 3.

Analysis of 3D printed

Lock and Key Once the designed was completed and verified, there

was a need to analyze the lock for stress distribution

and displacement.

The setup was made up in SolidWorks to analyze the

lock strength. The lock was set to drop from 2 meters.

The original drop test on printed lock was carried out

to find result like the SolidWorks results.

Once the analysis was done, the displacement and

stress distribution were found out.

The overall displacement in all the direction was

found to be 0.4 millimeter. The maximum stress that

it could sustain was 103 MPA.

Top Left – The total stress distribution on the 3D

printed lock performed in SolidWorks

Bottom Left – The maximum displacement that the

lock could withstand.

Spherical Pressure

Vessel This CAD model of spherical pressure vessel was

designed using ANSYS Workbench for Finite Element

Analysis (FEA) coursework.

The design was built around with assumption that the

material was Mild Steel and had equal thin thickness.

The other assumption included constant internal

pressure of 1 MPA and material with linear-elastic

and isotropic properties.

Once the design was complete, the mesh of the

spherical pressure was done.

I considered 1/4th of the spherical pressure vessel as

he internal pressure was constant.

Top Left – The CAD model of spherical pressure

vessel.

Bottom Left – The 1/4th spherical pressure vessel

meshing view.

Analysis of Spherical

Pressure Vessel The analysis of the spherical pressure vessel was

conducted using ANSYS Workbench. The material used

was Mild Steel using a 1 MPa constant internal pressure.

The other assumption was very thin wall thickness,

linear-elastic, isotropic material and working fluid is gas.

For analysis, 1/4th of the spherical vessel was considered.

The equivalent stress and linearized equivalent stress

was found out to make the required changes to keep it

under the sustainable limit.

The maximum equivalent stress was found to be 299

MPA which is just under the yield strength of the

material. The yield strength of material was 300 MPa that

it could sustain.

Top Left – The equivalent stress that spherical pressure

vessel sustains before the redesign

Bottom Left – The maximum equivalent stress that the

spherical pressure vessel can sustained that is below the

yield strength.

SOME OF MY MORE DESIGNS

Differential Gear Box Exhaust Manifold

Steering Clock

Single Cylinder Engine Ball Bearing Hydraulic Cylinder

Shock Absorber Axe Knife

Rubik’s Cube Medicine Bottle