DEFORM2D tutorial
Compression test
2
Overview (1/3)
 Finite Elements Method : Complex shape is divided into elements of simple
shape. Behavior inside each element is expressed as simple numerical model.
Problem of complex shape can be solved.
3
Overview (2/3)
 Components for FEM
Properties
Data Base of Properties
• Material properties
• Input properties according to purpose of simulation (Elastic, Plastic, Fracture)
• Ex) Young’s modulus, flow stress, friction coefficient, thermal expansion, thermal conductivity, etc...
Shape
Various Shape
• Shape of tools, material, etc…
• Modeling
• Degree of precision according to purpose of simulation
Boundary
Conditions
Process conditions
• External force, environments, process condition, etc…
• Ex) temperature, lubricated condition, velocity, etc…
4
Overview (3/3)
 Calculation of deformation, strain and so on by inputting material properties,
shape, process conditions
Process
conditions
Properties
Modeling of
tools and
material
Result
- Deformation
Lubricated
condition
Temperature
Pre-process
Solver
Environment
- Distribution
of
temperature
- Flow
- Hardening
Post-process
5
Contents
DEFORM-2D: Tutorial Contents
LAB 1 : Start of new problem
LAB 2 : Modeling
LAB 3 : Mesh
LAB 4 : Material
LAB 5 : Objects Positioning
LAB 6 : Set-up
LAB 7 : Starting of simulation
LAB 8 : Post-process
6
LAB 1. Start of new problem (1/8)
[Start menu] → [모든 프로그램] → [DEFORM-2D]→ [메인 프로그램]
Main program consists of Problem Tree, Summary and Tool box.
Tool
Problem Tree
Summary
7
LAB 1. Start of new problem (2/8)
화면 상단의 환경설정메뉴(Option/environment)
→ 사용언어, 단위계, 물성데이터베이스, 사용자수준 등 설정
•언어: English or Korean
•단위: SI
•Material Lib.: Standard
•User Type: Novice(초급)
•User directory
•복수프로세서사용
•E-mail 설정
•폰트크기설정
•기타
8
LAB 1. Start of new problem (3/8)
New Problem : [File]→[New Problem] or New Problem Icon(
).
Problem setup box → DEFORM-2D pre-processor, Input Problem location and
name
9
LAB 1. Start of new problem (4/8)
Pre-processor
Object tree
Display window
Object Data
10
LAB 1. Start of new problem (5/8)
상단메뉴 아이콘 설명
Control of steps
Control of material properties
Object Positioning
Interaction between objects and
friction conditions
Generating database
11
LAB 1. Start of new problem (6/8)
Simulation control : [Simulation Control] → Simulation Title,
Unit → SI, Mode → Deformation, Geometry → Axisymmetric.
→ [Ok]
12
LAB 1. Start of new problem (7/8)
Object type : [Object tree] Workpiece(Object#1)가 기본설정으로 생성됨
[Object Name] → [Billet] → [change]
[Object type] → [Plastic(강소성)]
13
LAB 1. Start of new problem (8/8)
Creation of objects : For defining top/bottom die, Insert Object icon click
twice
Object tree
Insert object
14
LAB 2. Modeling–IGES FILES
Import of modeling : [Object Tree] → [Workpiece], [Object type] →
Plastic(강소성)
▪ Import of modeling
- Click Geometry
- Under Tool tab
- Click Import Geo
- Open 설정한 폴더에서 형상 불러들이기
▪ Edit modeling
- Check GEO
→ if shade is outside of model(Figure)
→ Reverse GEO
15
LAB 3. Mesh (1/2)
Mesh : [Generate Mesh]
16
LAB 3. Mesh (2/2)
Equal mesh : [Detailed Settings Tab] → [Size Ratio] = 1 → [Generate Mesh]
→ Equal mesh → [Save] → [Exit]
17
LAB 4. Material
Material : [Material] → [Load from lib.]
→ Material which you use / Make New material
18
LAB 5. Objects positioning (1/2)
Object positioning : [Object Positioning] ;
[Positioning Object] ; Choose object you want to move
[Method]
; Method of movement
•마우스로 화면의 객체를 직접 이동시킨다.
•치수를 지정하여 이동시킨다.
•지정한 방향으로 기준객체에 대하여 이동
할 객체를 접촉시킨다.
•회전각을 입력하여 회전시킨다.
•선택한 축을 기준으로 형상을 뒤집는다.
19
LAB 5. Objects positioning (2/2)
20
LAB 6. Set-up (1/5)
[Menu] → [Inter-object]
21
LAB 6. Set-up (2/5)
[Edit..] → Friction coefficient
→ [Type] = Shear/Coulomb, [Value] = Constant(x)
22
LAB 6. Set-up (3/5)
Top Die Velocity: [Object Tree] → [Top Die] → [Movement]
→ [Direction] = –Y, [Constant value] = 1 mm/s
23
LAB 6. Set-up (4/5)
[Menu] → [Simulation Controls] → [Step]
→ [Number of Simulation Steps] = 50, [저장간격] = 1,
[Primary Die] = 2-Top Die, [With Equal Die Displacement] = 1
→ [OK]
* Top Die의 총 이동거리: 1(mm/step)*50(step) = 50mm
24
LAB 6. Set-up (5/5)
[Menu] → [Database Generation] → [New] → [location of save and name]
→ [Check] ; Notify error
→ [Generate]; make DB
→ [Exit]
25
LAB 7. Start of simulation
[생성된 DB 선택] → [Start] 클릭 ; 생성된 DB 실행
26
LAB 8. Post-Process (1/5)
After simulation complete, Tool Box Window → [DEFORM-2D Post]
27
LAB 8. Post-Process (2/5)
28
LAB 8. Post-Process (3/5)
[Step setup](
) → choose step which you want to watch
29
LAB 8. Post-Process (4/5)
[State Variable]( ) → [Strain-Effective]
30
LAB 8. Post-Process (5/5)
Check stress according to Time/Stroke
31
For Die Stress Analysis Lab.,
- You can use extrusion model of previous lab.
- You have to change object type of Die as elastic
- You use material properties of die in references you find.