Finite Element Analysis Creo-Simulate Webinar

Finite Element Analysis using
Creo Simulate
Mr. Arun Karthik
Senior Application Engineer
DHIO Research & Engineering Pvt Ltd.,
arunkarthik@dhioresearch.com
R

Agenda
1. About DHIO Research and Engineering Pvt Ltd.,
2. About PTC – Creo Simulate
3. Why Creo Simulate ?
4. Spectrum of Capabilities
5. Theoretical Background of Creo Simulate
6. FEA Capabilities – Live Demo
 Structural Evaluation
 Thermal Evaluation
 Thermal – Structural Evaluation
 Motion Evaluations – Kinematics & Dynamics
 Engineering Evaluations
7. Questions and Answers
8. Closure

 Collaborative Engineering Services and R&D
Company
 Experienced in
 FEA/CFD/MBD/Fatigue/Optimisation/ Fracture
Mechanics
 Manufacturing Process Simulation
 Thermal Hydraulic System Design
 Electronic/Electrical Systems Design
 Team with
 FEA Analysts
 Metallurgists
 Material Experts
 Tool & Die Design Experts
 Process Development
 Optimisation Experts
 Established in 2010, 35 Engineers, 8 consultants
working
 Business Focus on Engineering R&D, Software
Product Sales/Support and Training
About DHIO Research and Engineering Pvt., Ltd,
www.dhio.in | info@dhio.in

About PTC Creo Simulate
Enhance Your Product Design
with Simulation & Analysis
PTC’s simulation software is designed uniquely for the engineer, complete with the common Creo user interface, engineering terminology,
and seamless integration between CAD and CAE data, allowing for a more streamlined process.

Why Creo Simulate ?
What we expect from FEA Software's ?
Yes, It is easy to use, user need not be an FEM Expert !
Normal CAD experience is enough to use the software, Evaluate while designing the product !
Technology is built with unique FEM approach and strong fundamentals
tested over years with experimental and practical usage !
Creo Simulate results are evaluated against the real-time & experimental test cases.
Verification documents and test cases is provided along with the software.
Built in Intelligence to adopt the mesh functions to make the solution to converge faster
Hence consuming less time !
Thanks to PTC Solution architecture with
Integrated CAD  PLM  CAE Simulation Environment
Yes, It is Affordable
Avoid huge investment on CAE
Realise by testing on
your product !
Explore
Creo Simulate !
Realise by testing on
your product !
Explore
Creo Simulate !

Spectrum of Capabilities
Structural Evaluation
Linear
Nonlinear
 Material Nonlinearity
 Geometric Nonlinearity
 Boundary Condition Nonlinearity
Static
Dynamic
 Modal Analysis
 Buckling Analysis
 Harmonic Analysis
 Spectral Response Analysis
 Time Response Analysis
 Frequency Response Analysis
 Shock Spectrum Analysis
 Random Response Analysis
Pre-Stress Analysis – Static & Modal
Advanced Engineering Capabilities
 Fatigue Life Assessment
 Design of Experiment
 Sensitivity Analysis
 Design Optimisation

Fatigue Life Assessment
PTC Creo Fatigue Advisor Extension, you can predict the life of metal structures that are prone to
fatigue failure under cyclic loading and investigate the impact that design changes have on their
endurance
Fatigue Formulation
 Focus on Crack Initiation
 Strain – Life Analysis (EN)
 Effective for low and high cycle fatigue regions
 Consideration of plasticity
 Neuber
 Mean Stress correction
 Smith-Watson-Topper
 Morrow
 Surface treatment and Finish correction
 Bi-axiality correction
 Klann-Tipton-Cordes
 Hoffman-Seeger
Material Library
 Unified Material Law for Unalloyed steels,
Low Alloy Steels, Titanium Alloys,
Aluminum Alloys
 Surface Finish: Polished, Machined, Hot
Rolled, Cold Rolled, Forged, Cast, Water
Corroded, Sea Water Corroded, Nitrided,
Shot Peened
Load History
Constant Amplitude
 Peak-Peak
 Zero-Peak
 User Defined
Variable Amplitude
 Load Factor Table
 2nd Order Rainflow Counting
Results
 Number of cycles to failure (Life)
Factor of Safety
Confidence of Life based on
specified desired number of cycles
Results display on model
 Use of the full PTC Creo
Simulate post-processing
environment
Results recorded as Measures

Thermal Evaluation
Linear Thermal
Nonlinear Thermal
 Temperature Dependent Conduction Conductivity
 Generalised Convection
 Radiation
 Thermal Load Histories, Time Dependent
Static
Transient
 temperature distributions
dependent upon time
 Moving Heat Load Analysis
 Welding Simulation
 Lumped / Total Heat Volume and
coupled structural
 Design of Experiments
 Design Optimisations

Coupled Thermal – Structural Evaluation
Coupled Thermal Loads in Structural Analysis
 Linear Thermal Loads
Nonlinear Thermal Loads
 Temperature Dependent Conduction Conductivity
 Generalised Convection
 Radiation
 Thermal Load Histories, Time Dependent
Static Thermal Loads
Transient Thermal Loads
 temperature distributions
dependent upon time
 Welding Distortion Studies

 Dynamic Stress Analysis
Motion Analysis - Kinematics & Dynamics
 Linear
 Nonlinear Motion Dynamics
 Simulate gravity, springs, dampers, belts, gears, contact, and
friction without creating a physical prototype
 Perform kinematic analysis (position, velocity, and
acceleration analysis) as well as dynamic motion analysis
(friction, gravity, and forces)
 Detect problems with clearances and interferences early in
the design cycle
 Import behavioral data from applications such as PTC
Mathcad® or Microsoft® Excel® , and apply to existing
models to determine their performance under this behaviour
 Transfer reaction, gravity, and inertial loads directly to PTC
Creo Simulate™
 Set design feasibility and optimization study goals for
kinematic and dynamic performance

Engineering Evaluations
Short shot
Hesitation
 Mold Analysis
 MathCAD – Engineering Equation Solver
 GD & T Check
 Tolerance Analysis
 Design Study
 Human Factor Analysis
Human Factor Analysis
Tolerance Analysis

Theoretical Background of Creo Simulate
What are the different types of FEA Methods?
FEA method are different ways of adding degrees of freedom to the model.
H-Element Method
The h-method improves results by using a finer mesh of the
same type of element in different areas.
This method refers to decreasing the characteristic length
(h) of elements, dividing each existing element into two or
more elements without changing the type of elements used
The number of elements must be increased in areas where
the stress changes quickly over a small distance
P-Element Method
The p-method improves results by using the same mesh
but increases the polynomial order of the shape function to
improve the accuracy.
This method refers to increasing the degree of the highest
complete polynomial (p) within an element without changing
the number of elements used.
H-Method with course Mesh
Mesh uses linear
shape function.
Therefore, the
function for
displacement
should be linear.
P-Method with 2nd
order Polynomial
Mesh uses complex
elements based on a
polynomial shape
function. This helps to
accurately reflect the
strain.

What is the difference between P and H-method?
 At the core, the exact SAME mathematical problem is being solved
 P and H are different numerical methods to solve the SAME problem
 Given “correct” initial/boundary conditions (including mesh), the SAME result will be achieved
 PTC publishes a Verification Guide that shows solution to numerous NAFEMS benchmarks with comparisons
against ANSYS and NASTRAN
 But:
 How easy is it to create the “correct” mesh?
 How do you know when you have the “correct” mesh?
 How is numerical convergence achieved/displayed/corrected? (automatic? Manual, not-at-all?)
 Importantly…
 Is your (h-method) FEA solver hiding or missing high stress concentrations due to poor numerical resolution?
 How will you know?

Solution Accuracy / Time, Turbine Blade Model
Mesh Using
H-Element FEA
(Faceted Approximation)
FEA Run 1 FEA Run 2 FEA Run 3 FEA Run 4
Elements: 2710
Max Stress: 466 MPa
Elements: 9057
Max Stress: 609 MPa
Elements: 12714
Max Stress: 629 MPa
Elements: 42460
Max Stress: 706 MPa
Manual
Effort
Manual
Effort
Manual
Effort
Manual Convergence by Mesh Refinement
0
100
200
300
400
500
600
700
800
900
0 10 30 45 80 130
H-Code FEA
Time to Accurate SolutionMax Stress
(MPa)
Time
(min.)
This area of curved geometry
will probably be a high stress area

Solution Accuracy / Time, Turbine Blade Model
This area of curved geometry
will probably be a high stress area
Automatic Adaptivity Ensures
Solution Quality and
SAVES TIME
Mesh Using
Creo Simulate
(Precise Representation)
AUTOMATIC Convergence by Auto-Element Order Refinement
Max. Stress = 783 MPa
0
100
200
300
400
500
600
700
800
900
0 10 30 45 80 130
Creo Simulate
H-Code FEA
Time to Accurate SolutionMax Stress
(MPa)
Time
(min.)

Overall P-method efficiency
• Each have good and bad points, but you need to consider the following:
• What is the overall time taken? (not just one meshing or solving step)
Steps involved – P Method (Creo Simulate)
1. Geometry creation
2. Meshing
3. Loads/boundary condition setup
4. Solve
5. Postprocess
PTC’s P-Method approach reduces the number of steps and thus
reduces overall effort/time taken
Steps involved – H Method
1. Geometry creation
2. Geometry transfer
3. Geometry healing due to translation errors
4. Meshing
5. Loads/boundary condition setup
6. Solve
7. Convergence check
8. Remesh
9. Solve again
10. Postprocess

P-Element-Technology
Result quality does NOT
depend on mesh refinement
Automatic result-
convergence
Design Engineer gets reliable
results

Live demo:10th
March 2017
Live demo : 24th
Feb 2017
Live demo : 10th
Feb 2017
Live demo : 10th
Feb 2017
 Structural Evaluation
 Thermal Evaluation
 Thermal – Structural Evaluation
 Motion Evaluations – Kinematics & Dynamics
 Engineering Evaluations
FEA Capabilities – Live Demo
Live demo : 27th
Jan 2017

 Structural Evaluation
FEA Capabilities – Live Demo
Live Demo

Questions and Answers
Summary
Structural Evaluation
Linear
Nonlinear
 Material Nonlinearity
 Geometric Nonlinearity
 Boundary Condition Nonlinearity
Static
Dynamic
 Modal Analysis
 Buckling Analysis
 Harmonic Analysis
 Spectral Response Analysis
 Time Response Analysis
 Frequency Response Analysis
 Shock Spectrum Analysis
 Random Response Analysis
Pre-Stress Analysis – Static & Modal
 Fatigue Life Assessment

Creo Simulate is an affordable FEM/MBD/Optimization Solutions
with Integrated parametric optimization capabilities
Contact us for demo and discussion
www.dhiosimulate.com
Start Free
Project/Benchmark
With us today
Schedule Training /
Demo to your team
Contact Us
Arunkarthik S
arunkarthik@dhioresearch.com
+91 9591994642, 9900138009

Finite Element Analysis Creo-Simulate Webinar

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