ANSYS Users’ Group 2019Mechanical 2019 R3 Enhancements(Coupled Field, DCS, GRANTA)

Sriraghav Sridharan, Aric MeyerApplication Engineer

Shawn CatlinApplication Engineering Manager

Agenda

• Enhancements to ANSYS Mechanical➢ Mechanical UI and Materials Data for Simulation

➢Coupled Field analysis

• Managing multiple HPC resources➢ Distributed Computing Services (DCS) for Design Points

ANSYS is making engineering simulation pervasive throughout conceptualization, design, and operation of a product

Industry can not achieve these aggressive business initiatives without engineering simulation. And not just at the digital prototype stage. Industry leaders are actively using simulation for upfront digital exploration and to create digital twins of operational products. That is pervasive engineering simulation.

- Ajei Gopal, President and CEO, ANSYS Inc

“

ANSYS offers the only true simulation platform with best-of-breed simulation across all major physics

Market Leader Across Individual Physics with Industry-Leading Platform

Platform

Materials Information

Fluids

StructuresElectromagnetics

SemiconductorPower Mission-critical

Embedded Software

Optical

Coupled Field Elements

Coupled-Physics Solutions

Thermal

Fluids

Emag

Structural

Thermal

Fluids

Structural

Emag

Load Transfer Method

• Drag and Drop Multiphysics

• Two or more analyses coupled by applyingresults from one analysis as loads to another

• Physics solved sequentially

Direct Method

• Single analysis containing all necessarydegrees-of-freedom to solve the coupled-fieldproblem

• Physics solved simultaneously

• Coupled-field element

• Coupled Thermo-structural analysis is Native inR3

11 12 1 1

21 22 2 2

K K X F=

K K X F

=

11 1 2 1 1 1 2

22 1 2 2 2 1 2

K (X ,X ) 0 X F(X ,X )

0 K (X ,X ) X F (X ,X )

Coupled-Field Element Usage

• Convenience

– Simultaneous solution of different physics

– Ease of use

• Strongly coupled physics

• Highly nonlinear coupled-field analyses

– Material and geometric nonlinearities

– Temperature dependent material properties

– Nonlinear coupling between the physics

• Multi-physics contact

Advantages

• Brake Pad Heating: Relative slidingbetween the disc and brake pads causesignificant frictional heat generation.

• Plastic seals: Large plastic deformationof the seals causes the temperature torise because of plastic heating.

• Friction Stir Welding: The processrelies on frictional heat generationbetween the tool and the workpiece.

Applications

Thermo-Mechanical Coupling

Elasticity

Plasticity

Hyperelasticity,

Structural damping

Geometric nonlinearities

Thermal expansion

Temperature-dependent MP/TBs

Plastic heatThermal conductivity, specific heat, enthalpy

Convection/heat flux, Radiation, Heat generation

etemperatur reference absolute - T

etemperatur -

tscoefficien expansion thermalof vector -

matrix stiffness -

strain plastic - strain, total- stress, -

o

T

c

pl

T

- To

cCC pV =

Tkt

TC

ttt

Q

Tcc

VT

o

pl 2−

+

=

+

+=

T

Thermal strain

Plastic heat generation rate

Thermoelastic damping

Current Technology

PLANE223

2-D 8-node quadrilateral

SOLID226

3-D 20-node

brick

SOLID227

3-D 10-node tetrahedron

Plastic Heating and Viscoelastic Heating is available under Conditions to simulate thermoplastic and thermoviscoelasticity coupled effects.

Coupled Field Analysis (Loads and Boundary conditions)

9

• Loads and Boundary conditions are classified using Structural and Thermal group shown below in the context menu so that loads associated to respective physics can be added

Coupled Field Analysis Features

10

• Supports 2D/3D analysis and Symmetry

• Structural and Thermal Point Mass

• Import External loads into Coupled Field Analysis

• Non Linear Mesh Adaptivity (NLAD)

Temperatures

Coupled Field Analysis Applications

11

Frictional Welding Simulation

Brake Pad Heating Simulation

Design Point Services

(Distributed Compute Services – DCS)

Design Exploration using ANSYS

Single Design Point

•Everyone starts somewhere

•Parametric and Persistent in Workbench

“What if” Study•Manual Search

•Parametric Platform

Response Surfaces•Build a Mathematical Model

Optimization•With or without a Response Surface

Robust Design•Six Sigma Analysis

DOE•Run a smart set of Design Points

Sensitivity and Correlation•Find the relevant parameters

Distributed Compute Services

• ANSYS introduces a new family of services that enable the distributed evaluation and management of simulation workflows – it’s called DCS, the Distributed Compute Services.

• The first release in 2019 R3 features theDesign Point Service (DPS), allowing the robust and distributed evaluation of tens of thousands of Design Points, starting from a standard ANSYS Workbench simulation project.

14

Demo – Problem Description

15

Demo – Design Space

Large Design Space

P1

–N

um

be

r o

f Sp

oke

s

P32 – Rim Thickness

Demo – Project

Open, Modular, Service-Oriented Architecture

18

DC EvaluatorsCan run on arbitrary compute resources. They query the Design Point Service for tasks to evaluate based on their capabilities.

DC Evaluator 1Linux workstation

DC Evaluator 2Windows workstation

DC Evaluator 4Cloud resource

DC Evaluator ‘N’Arbitrary compute resource

DC Evaluator 3Linux cluster

Parametric Workbench Model

ClientsArbitrary clients can interact with the Design Point Service.

Design Points

Design Point Service

DC ServicesManages simulation workflows. Handles data transfers and file storage.

Transfer of simulation project, model parameters &Design Points

Import of Evaluated Design Points

Compute taskpulled by Evaluator

Output parameters & Design Point filesare passed back

Other Design Exploration systems (DX & others)

Other optimizers

Key Points

• Handle large number of Design Points (10’000s) robustly

• Distributed evaluationsSeamless support for many usage / compute scenarios

• On single user desktop• On group of workstations• On clusters/HPC resources, connecting to queuing

systems• On private or public cloud resources• On heterogeneous/mixed systems with different

capabilities

• Open and extensible• Not limited to Workbench• Use other tools to create Design Points (optimizer)

• Minimal network footprint

19

Testimonial - BMC

“The results of this project were imperative for the success of the brand.”Stefan Christ, Head of R&D at BMC Switzerland AG.

The bicycle manufacturer BMC benefittedfrom DCS Technology recently. Their flagshiproad bike, the SLR01, was optimized with thehelp of DCS and went on to be very popularon the market.

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Video: https://www.youtube.com/watch?v=Q2VCXYiw77Q

Thank you!

Questions

Appendix

What is GRANTA Materials Data for Simulation?

Reliable materials data, when and where you need it

From the comprehensive library of Granta materials

property data

A package of datasheets with

simulation-ready data

(latest release = 700+ materials)

Embedded within

ANSYS Mechanical or

ANSYS Electronics Desktop

for instant access

Temperature-dependent properties for many materials

Extensive property data to support simulation

700+ materials classes, and growing

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✓ Solders NEW in R3✓ Steels (high, medium, low alloy)✓ Low carbon steels✓ Medium and high carbon steels✓ Cast irons✓ Coated steels✓ Nickel alloys✓ Iron alloys✓ Microalloy and high strength

steels✓ Stainless steels (austenitic,

ferritic, martensitic, and precipitation hardened)

✓ Tool steels✓ Aluminum alloys✓ Beryllium alloys✓ Chromium alloys✓ Cobalt alloys✓ Copper alloys✓ Lead alloys✓ Magnesium alloys✓ Tin alloys✓ Titanium alloys✓ Zinc alloys✓ Precious metal alloys✓ Refractory alloys✓ Other metals

368 Metals And 208 more168 Polymers

Fluids NEW in R3✓ Gases (Air, Nitrogen,…)✓ Liquids (Refrigerant, Water,…)

Ceramics✓ Technical ceramics✓ Non-technical ceramics✓ Semiconductors NEW in R3

Woods✓ Engineered woods

Composites✓ Metal matrix composites✓ Ceramic matrix composites✓ PCB laminates NEW in R3

Glasses✓ Technical glasses

Foams✓ Polymer foams, flexible✓ Polymer foams, rigid

Magnetic materials NEW in R3✓ Hard magnets✓ Soft magnets

Demo. Honeycombs✓ Expanded honeycomb✓ Extruded honeycomb

Thermoplastics, including✓ Engineering plastics

✓ Polyethylenes, PP✓ ABS, PS✓ PVC✓ PET, PBT✓ PMMA/acrylic✓ POM/acetyl✓ PC✓ Polyamides/nylons✓ PTFE

✓ Adv. engineering plastics✓ PEEK✓ PEI, PAI, PI✓ PVDF✓ PSU, PESU, PPSU✓ PPS✓ LCP

✓ Bio-based plastics

Thermosets, including✓ Epoxy resins✓ Phenolics✓ Polyesters

Elastomers/rubbers, including✓ Thermoplastic elastomers✓ Thermoset elastomers

120 added with ANSYS 2019 R3 release

GRANTA Materials Data for Simulation: What’s new in R3?

Now available in ANSYS Electronics Desktop (as well as ANSYS Mechanical)• Unified database across solvers: consistent properties for

your Multiphysics simulations

120 materials added → now 700+ generic materials

New properties for electromagnetic simulation

ANSYS Maxwell has an additional 500+ records • B-H curves and core-loss for producer-specific grades of

magnetic materials

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And more

PCB Laminates

Properties for low frequency electromagnetic fields - Maxwell

26

Physical properties where relevant:✓ Linear, Isotropic Elastic (Young's modulus & Poisson's ratio)✓ Thermo-mechanical (Thermal expansion coefficient)✓ Thermal (Thermal conductivity & Specific heat capacity)

Electrical models for many materials:✓ Conductivity, including some temperature-dependant curves✓ Dielectric constant✓ Dissipation factor

Magnetic models for many materials:✓ Coercivity✓ Core loss✓ Permeability✓ B-H curves

Extra 500+ records for producer-specific grades of magnetic materials:✓ B-H curves for all materials✓ Core loss for many materials

Solders

Instant access within ANSYS Maxwell

27

In the Material drop-down list,

select “Edit”

In the list of libraries, select GRANTA Producers Materials

Data for Simulation

Choose a material in the list and select

“View/Edit Materials”

Select “All Properties” to display all the data

available

Properties for structural analysis - Mechanical

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Metals

And more

Polymers

Room temperature models for all materials:

✓ Linear, Isotropic Elastic (Young's modulus & Poisson's ratio)✓ Failure (Tensile yield strength & Tensile ultimate strength)✓ Thermo-mechanical (Thermal expansion coefficient)✓ Thermal (Thermal conductivity & Specific heat capacity)✓ Electrical (Electrical resistivity)

Temperature-dependent models for some materials:

✓ Including thermo-mechanical (Thermal expansion coefficient)

Demo. advanced properties for some plastics:

✓ Hyperelastic (Mooney-Rivlin)