Validation of STAR-CCM+ & VL for airfoil noise on a NACA ... Application Example ... Optimization 1D –3D Co-Simulation TEST-CAE Correlation Multiphysics

Nonlinear Analyis in

Simcenter 3DRobin Boeykens

[email protected]

Realize innovation.Unrestricted © Siemens AG 2017

Unrestricted © Siemens AG 2017

Page 2 Siemens PLM Software

3D CAE for the Digital Twin

Simcenter 3D



Scalable Simulation Capabilities

General CAE Analysts:

• Performed by CAE analysts

CAE Discipline

Specialists

• Experts

Design Engineer:• Performed in NX CAD environment

• Design engineers or pure designers

• Guided part validation

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D



NX Nastran

LMS Samcef

Simcenter 3D

Structural Analysis

Linear

Nonlinear

Modal

Buckling

Rotor Dynamics



NX Nastran

LMS Samcef

Simcenter 3D

Structural Analysis

Linear

Nonlinear

Modal

Buckling

Rotor Dynamics



Scalable Nonlinear Capabilities

General CAE Analysts

CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D



Why Use a Nonlinear Solution?







Good engineering requires skillful approximation.

All structures can behave in nonlinear manner depending on

loading and boundary conditions.

In many situations, a linear approximation and solution is

valid and the preferred solution as it is easier and more

efficient to solve.

But …

• All physical systems in the real world are inherently

nonlinear in nature.

• Linear analysis is “wrong”, because life is nonlinear…!




Reasons that a nonlinear solution may be needed:

• Boundary Nonlinearity: Connection area between parts

changes with loading and/or movement

• Geometric Nonlinearity: Structure rotates and/or

deforms significantly and hence load directions change

with increased loading

• Material Nonlinearity: Material stiffness changes as the

load changes





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D



Simulation Driven Design

No longer a thought of the future

CAE is evolving from being a set of

‘black box tools’ for highly specialized

individuals toward a group productivity

environment that delivers strategic

competitive advantages by supporting

simulation-driven design.

CIMdata

Source: CIMdata– Modern Engineering Simulation Environments



Simulation is now used throughout the

development process

Concept

Design

Detailed

Design

Performance

Validation



Shifting left

Design3 Design6 Design8

Sim1Sim4 Sim5

Release?

Design1 Design3

Sim0Sim2

Release

The old way

With Simulation Driven Design

Design2 Design4 Design5 Design7Design1

Design2

Sim1

Beat your competition

Sim3



Concerns and challenges

“Designers aren’t trained in simulation

techniques”

“It takes years to

become an analyst”

“We don’t trust a

designer to deliver

accurate simulation

results”

“Simulation is too time

consuming”



Lower the training barrier

• Make the simulation process more accessible to designers

Enable tighter collaboration between designers

and analysts

• Allowing analysts to guide designers or non-frequent users

of simulation technology

How do we

overcome

these

challenges?



Historically

Design Simulation



The new age

Design Simulation



The new age

NX CAD Simcenter 3D



NX Platform

The new age



Automation

Simulation Templates

Easily capture, automate, and deploy simulationprocesses in the CAD environment

• Reduces training costs for multiple, solver-specific tools

• Common UI and technology used by design and CAE team



Automation


• Experienced analyst creates templates to

standardize analysis processes

• Items can include materials, physical properties,

loads, boundary conditions, solver settings, etc.

• Model and Post Processing Templates

• Simple to create and an easy entry point into

automation




Automation of

Repetitive Nonlinear Workflows

Demonstration


Snap-Fit Application

• In

Moving part

Fixed part

Sliding contact

• Out

Will it break?

Assembly force?

Nonlinear Analysis



Automation of


Illustration


Drop Simulation

• In

Falling object

Ground

• Out

Will it break?

Nonlinear Analysis



Automation of


Illustration


Drop Simulation

• In

Falling object

Ground

• Out

Will it break?

Nonlinear Analysis

failure





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D



Generalist

Technology Primer

• … Simcenter 12 – What’s New

SOL402 - a new NX Nastran solution for advanced nonlinear analysis

• Key highlight → Multistep philosophy

event

time



Generalist

Technology Primer




eventp(t)

time



Generalist

Technology Primer




eventp(t)

timestep 1 step 2 step 3



Generalist

Technology Primer




eventp(t)

p1

p2p3

timestep 1 step 2 step 3



Generalist

Technology Primer




• 1 single solution can combine various solution types

→ e.g. bolt pre-load → services loads → dynamic prediction

• Enables a variety of workflows for the nonlinear generalist

→ e.g. manufacturing simulation, compressor bolt tightening



Generalist

Technology Primer

User Need

• Predict stresses and deformations from a series of

manufacturing steps: bolt tightening, load sequencing,

component addition, bolt removal,…

Applications

• Assembly of an auto powertrain system, aero engine casings,

industrial machine assembly,…

Enhancements

• Bolt load sequencing – including bolt removal

• Add or remove contact regions by subcases

Multistep Application Example – Manufacturing Simulation

oil pump assembly





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D





Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3DCAE Discipline

Specialists



3D simulation today

Disconnected, ad-hoc

HVAC Analysis

Structural Analysis

Underhood Cooling Analysis

Suspension Analysis

Durability Analysis Radiator Analysis

Heat Transfer Analysis

Acoustics Analysis

No common model



Simcenter 3D

Multi-discipline integration

Structures

NVH &

Acoustics

Thermal

Flow

Composites

Motion

Rotor

Dynamics

Durability

Optimization

1D – 3D

Co-Simulation

TEST-CAE

Correlation

Multiphysics

Linear FEM Non-Linear FEM BEM Multi-body Fatigue Thermal CFD



Simcenter 3D


Simulating Manufacturing Process

and Spring-back EffectComposite Ship Propeller

Simcenter 3D



Simcenter 3D




Simcenter 3D



Simcenter 3D






Simcenter 3D



and Spring-back Effect

COMPOSITES

MANUFACTURING

Composite Ship Propeller



Simcenter 3D


Customer: Large UK-based jet engine manufacturer

Build jet engines for commercial and military markets

Challenge:

• Needed non-linear solver to analyze thermal and

mechanical response of engine components and

system

• Large displacement, plasticity, creep, user-defined

materials and contact at high temperature duty cycles

• Needed to replace in-house solver

Solution:

• NX Nastran Nonlinear with SC Thermal selected

• Close working relationship with customer to enable

workflows

• Started with compressor stage deployment. Planning

move to other stages.





CAE Discipline

Specialists

Design Engineer

# of Users

Pro

ble

m C

om

ple

xity

CAD Independent

CAD Dependent

SimcenterTM 3D

Thank You

Realize innovation.Unrestricted © Siemens AG 2017

Documents

Validation of STAR-CCM+ & VL for airfoil noise on a NACA ... Application Example ... Optimization 1D –3D Co-Simulation TEST-CAE Correlation Multiphysics