Work experience and Projects

Pushkaraj Bhagwat

Email – bhagwatpushkaraj@gmail.com

Phone – +1-573-201-7131

Aluminum surface made up of many

microscopic asperities

Simplified single

half-asperity

Thesis –A computational study of the effects of material hardening and damage in micro-asperity friction

2D axisymmetric asperity compressed

until failure

3D asperity compressed and sheared

until flake formationEffect of strain hardening on friction Effect of rate hardening on friction

ANSYS Inc. – Testing Engineer Intern

0

2000

4000

6000

8000

17.0 (9.1.3.1) 16.0 (9.1.2.1) 15.0 (9.1.2.1)

ρ=1000

ρ=1e-4 ρ=100

ρ=10

ρ=1e-2

ρ=1

ρ=1e-1ρ=1e-3

• Ran benchmark-tests

across different

hardware and software

platforms.

• Compared computation

time needed by latest 3

ANSYS versions.

• Assigned different

densities at each node of

a single element.

• Tested for correct

element mass matrices

and moments of inertia.

• Modelled a static crack

within a body with an

unstructured mesh.

• Calculated J-integrals

using UMM

(Unstructured Mesh

Mapping).

• Checked convergence

and accuracy of J-

integrals to ensure

effectiveness of UMM

tool.

• Simulated 3D fluid body

with heat flow due to

unequal temperatures.

• Tested user subroutine

of fluid elements for

correct state variable

calculations.

Project 1 Project 2 Project 3 Project 4

Procter & Gamble - UC Simulation Center(Confidential projects, hence no images)

Vibration reduction

(Hertzian theory, Abaqus, Matlab)

• Non-uniform contacting roller circumference was

causing vibrations.

• Drew analogy between rollers and simple springs.

• Calculated nonlinear spring stiffness using Hertzian

contact for round bodies.

• Equalized equivalent stiffness throughout the rolling

cycle using principles of ‘springs in series and parallel’.

• Reduced vibrations by nearly 90%.

Bond tearing

(Abaqus)

• Simulated and experimentally validated tearing of diaper

fabric bonds.

• Determined all possible failure modes.

• Suggested guidelines for improved bond pattern shape,

size and positions.

Glue flow simulation

(Abaqus - Smoothed Particle Hydrodynamics and

Fluid Structure Interaction)

• Glue is costly and overflows in all directions during

diaper production, making the assembly line messy.

• Simulated glue flow between diaper fabrics when they

are squeezed between rollers.

• Suggested solutions for constraining glue between diaper

layers (less glue lines, diaper edge fold-over).

Compression bonding process optimization

(Abaqus, SolidWorks)

• Simulated & calculated energy and force required for

creating each diaper-ear bond.

• Varied nub height and shapes to optimize energy and

force consumption.

• Varied bond patterns to find best possible solution.

SpaceX Hyperloop competition – Structural Team Lead of Hyperloop UC

Featured on Time.com

Amongst top 22 out of

more than 1200 teams

world over, selected to

test their pods at the

SpaceX test-track

My contribution –

Designed, optimized and

modeled

• Pod structure

• Braking characteristics

• Levitation assemblies

• Fail-safes

Graduate Research Assistant – Optimization of Mandibular fracture plates

Fracture close to

center of mandible

Fracture along

side of mandible

Hexahedral

mesh

Anatomy of mandible

CT Scans

3D Slicer

Meshlab

SolidWorks

Hypermesh

Abaqus

Toughening by weakening

2D FEM code development (▯and Δ)

High Performance ComputingGraduate Projects

Simulated idea for increasing

toughness of brittle materials by

artificially introducing weak areas.

Developed a finite element code in

MATLAB for the plane stress and

plane strain cases.

Worked with force controlled loads.

Developed C code to solve the Laplace

eqn. across multiple processes using the

Additive Schwarz method and MPI.

von M

ises

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Over

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Solv

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FSAE Supra 2011, 2012Robocon 2010

Design and Modelling of an Air Compressor

Senior year project

Truck Tippler

Undergrad

Projects

Designed, modelled, manufactured and raced 2 FSAE race cars

Designed a truck tippler for rapid unloading of trucks.

Also manufactured a working prototype (scale 1:100)

Built manual as well as autonomous robots that could build

multiple styrofoam pyramids within 3 minutes

Designed and modelled a reciprocating air compressor and all

its components according to customer specifications