# NONLINEAR GEOMETRIC EFFECTS and CONTACT Possible uses for this information will include:

Mechanics

Oct 30, 2013 (4 years and 8 months ago)

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NONLINEAR GEOMETRIC EFFECTS

and

CONTACT

Possible uses for this information will include:

Providing useful information to self
-
learners;

Providing focus for the developers of short courses, text books and other learning
material;

Providing a basis for the

production of self
-
test quizzes and examinations;

Providing the basis for registers of suitably qualified and experienced persons.

Recommended
Competences

Category

&

Code Number

STATEMENT OF
COMPETENCE

Standard

or

and

EQF Level

Resource

Refer
ence

Code

Pre
-
Requisites

NGECpr1

All learning outcomes in category FEA as
appropriate to industry, application and level.

NGEC
pr2

All learning outcomes in category MESM as
appropriate to industry, application and level.

Knowledge

NGECkn1

Iden
tify the
contact

facilities available in a finite
element system, including friction models.

S,7

NGECref1

NGECkn2

Identify the algorithm used to follow highly non
-
linear equilibrium paths in a finite element
system.

A,7

NGECref

2

NGECkn3

List common c
ategories of geometric non
-
linearity
and contact.

S,7

NGECref3

NGECkn4

Identify the extent to which your application
software allows modification of geometric
nonlinear solution parameters.

A,7

NGECref

4

Comprehension

NGECco1

Discuss the terms
Geom
etric Strengthening

and
Geometric Weakening
.

A,7

NGECref
5

NGECco2

Explain why

can give rise to
different end results and identify relevant
examples.

A,7

NGECref
16

NGECco3

Explain how large displacement effects can be
handled as a series

of linear analyses.

A,7

NGECref
17

NGECo4

Outline how large displacements, plasticity and
instability can interact in a collapse scenario.

A,7

NGECref
6

NGECo5

Discuss the term
.

A,7

NGECref
19

NGECo6

Discuss the concept of
Mesh

Pre
-
Dist
ortion
.

A,7

NGECref23

NGECo7

Contrast the terms
Large Displacement

and
Large
Strains.

A,7

NGECref
7

NGECo8

Discuss the meshing requirements for accurate
contact area

and
contact pressure
.

S,7

NGECref
18

NGECo9

Discuss the limitations of contact algori
thms
available in a finite element system.

A,7

NGECref
8

NGECo10

Discuss the theoretical basis of the contact
algorithms available in a finite element system.

A,7

NGECref
9

NGECo11

Explain the challenges of following a highly non
-
linear equilibrium pat
h with both load control and
displacement control.

A,7

NGECref
10

NGECo12

Contrast the
Newton
-
Raphson

method and the
Riks
arc
-
length

method.

A,7

NGECref
11

Application

NGECap1

Identify whether a system has automatic re
-
meshing and implement a
re
-
mesh
ing

strategy as
appropriate, due to significant distortion of a
mesh.

A,7

NGECref
24

NGECap2

Conduct
large displacement
analyses.

A,7

NGECref
12

NGECap3

Carry out
large strain
analyses.

A,7

NGECref
28

NGECap4

Use an analysis system to carry out
contact
a
nalyses.

A,7

NGECref
13

NGECap5

Conduct analyses with
pre
-
stress
and
pre
-
strain
.

A,7

NGECref
20

NGECap6

Carry out analyses with
.

A,7

NGECref
2
5

Analysis

NGECan1

Analyse the results from geometrically nonlinear
analyses (including contact
) and determine
whether they satisfy inherent assumptions.

S,7

NGECref
14

NGECan2

Compare the results from geometrically nonlinear
analyses (including contact) with allowable
values and comment on findings.

S,7

NGECref
21

Synthesis

NGECsy1

Plan a series

of simple benchmarks in support of a
more complex nonlinear analysis.

A,7

NGECref
15

NGECsy2

Plan modelling strategies for geometrically
nonlinear problems, including contact.

A,7

NGECref
22

Evaluation

NGECev1

Assess whether

is likely t
o be
required in any analysis.

A,7

NGECref
2
9

NGECev2

Select appropriate solution schemes for
geometrically non
-
linear problems

A,7

NGECref2
6

NGECev3

Assess whether element distortion effects are
affecting the quality of solution and take
appropriate
remedial action where necessary.

A,7

NGECref2
7

REFERENCES:

NGEC
ref1

How To Undertake a Contact
and Friction

Analysis
,
(
Chapter 4
)
, A. Konter

[2000],
NAFEMS, Glasgow,
Document Ref.
HT15.

NGECref2

Non
-
linear finite element analysis of solids and str
uctures
-

Volume 1,

(Chapter 9), M.A. Crisfield [1991] John Wiley,
Chichester, ISBN 0
-
471
-
97059
-
X.

NGECref3

Nonlinear Finite Elements for Continua and Structures
, (Chapters 6 and 10), T. Belytschko, W.K. Liu and B. Moran [2000],
John Wiley, Chichester, i
SBN 0
-
471
-
98774
-
3

NGECref4

Non
-
linear finite element analysis of solids and structures
-

Volume 1
, (Chapter 3), M.A. Crisfield [1991] John Wiley,
Chichester, ISBN 0
-
471
-
97059
-
X.

NGECref5

Non
-
linear continuum mechanics for finite element analysis
, (Cha
pter 1) J. Bonet and R.D. Wood [1997] Cambridge University
Press, ISBN 0
-
521
-
57272
-
X

NGECref6

Non
-
linear finite element analysis of solids and struc
tures
-

Volume 2
, (Chapter 20), M.A. Crisfield
[1997]
,
John Wiley,
Chichester
, ISBN 0
-
471
-
95649
-
X

NGEC
ref7

Non
-
linear finite element analysis of solids and structures
-

Volume 2
, (Chapter 19), M.A. Crisfield [1997] , John Wiley,
Chichester, ISBN 0
-
471
-
95649
-
X

NGECref8

How To Undertake a Contact and Friction Analysis,

(Chapter 5), A. Konter, [2000], NA
FEMS, Glasgow, Document Ref. HT15.

NGECref9

Non
-
linear finite element analysis of solids and structures
-

Volume 2
, (Chapter 23), M.A. Crisfield [1997] , John Wiley,
Chichester, ISBN 0
-
471
-
95649
-
X

NGECref10

Non
-
linear finite element analysis of solids

and structures
-

Volume 1,

(Chapter 1), M.A. Crisfield [1991] John Wiley,
Chichester, ISBN 0
-
471
-
97059
-
X.

NGECref11

Introduction to non
-
linear finite element analysis
, (Chapter 5), E. Hinton [1992] , NAFEMS, Glasgow, ISBN 1
-
874376
-
00
-
X

NGECref
12

Under
standing
non
-
linear finite element analysis
, (Chapter 4), A.A. Becke
r [2001], NAFEMS, Glasgow,
ISBN 1
-
874376
-
35
-
2.

NGECref
13

, (Chapters 1
-
3) A. Konter [2006], NAFEMS, Glasgow, Document Ref. R0094.

NGECref
14

A
dvanced Finite Element Contact Benchmarks
, (Chapters 4
-
6) A. Konter [2006], NAFEMS, Glasgow, Document Ref. R0094.

NGECref
15

NAFEMS Benchmark Tests for Finite Element Modelling of Contact, Gapping and Sliding
, Q. Feng and N.K. Prinja [2001],
NAFEMS Report

R0081.

NGECref16

Piping Handbook
,

ML Nayyar, 7
th

ed. McGraw
-
Hill, ISBN 0
-
07
-
047106
-
1,
2000. ChA7.

NGECref17

Finite Element Modelling for Stress Analysis
,

RD Cook, John Wiley, ISBN 0
-
471
-
10774
-
3, 1995. Ch11.

NGECref18

System User Manuals.

NGECref19

The

Finite Element Method, Volume 2: Solid Mechanics
,

OC Zienkiewicz and RL Taylor, Butterworth, ISBN 0
-
7506
-
5055
-
9,
2000
. Section 10.6.

Suitable

experiential learning

in an industrial context and environment.

NGECref20

System User Manuals

and
suitable

exper
iential learning

in an industrial context and environment.

NGECref21

Suitable

experiential learning

in an industrial context and environment.

NGECref2
2

How to Plan a Finite Element Analysis
, D. Baguley & D.R. Hose, NAFEMS Ltd. HT10, 1994.

NAFEMS QSS 001
:2007 : Engineering Simulation

Quality Management Systems

Requirements
, 1
st

Edition, NAFEMS Ltd.
2007.

Quality Management in Engineering Simulation
, A Primer for the NAFEMS QSS, J M Smith, NAFEMS Ltd, 2008.

NGECref23

Error
-
lements in Solid Mechanics. E. Stein (Ed), John Wiley & Sons, ISBN 0
-
471
-
49650
-
2, 2003.

NGECref24

System User Manuals.

NGECref2
5

System User Manuals

and
suitable

experiential learning

in an industrial context and environment.

NGECref2
6

System User Manu
als

and
suitable

experiential learning

in an industrial context and environment.

NGECref27

Suitable

experiential learning

in an industrial context and environment.

NGECref
28

Non
-
linear finite element analysis of solids and structures
-

Volume 1
, (Chapt
er 3), M.A. Crisfield [1991] John Wiley,
Chichester, ISBN 0
-
471
-
97059
-
X.

NGECref29

The Finite Element Method, Volume 2: Solid Mechanics
,

OC Zienkiewicz and RL Taylor, Butterworth, ISBN 0
-
7506
-
5055
-
9,
2000. Section 10.6.

Suitable

experiential learning

in a
n industrial context and environment.