Abstract
The development toward miniaturization of products and devices in metal industries has increased the demand for metallic parts manufactured at micro-scale. This chapter describes an integrated numerical simulation platform, which employs virtual grain generation (VGRAIN) and crystal plasticity finite element simulation technology to aid the forming process design of micro-components. The VGRAIN system generates finite element models of controlled grain tessellation structures, which incorporate material micro-structure information and dedicated intergrain relationships. Micro-deformation of grains was characterized by crystal plasticity theory and implemented via user-defined subroutine VUMAT/UMAT into ABAQUS software. The validity of the integrated numerical simulation platform had been demonstrated through the forming of a micro-pin. The platform had been further used to investigate the initiation and propagation of micro-cracks under complex forming processes.
| Original language | English |
|---|---|
| Title of host publication | Micromanufacturing Engineering and Technology |
| Subtitle of host publication | Second Edition |
| Publisher | Elsevier Inc. |
| Chapter | 32 |
| Pages | 733-748 |
| Number of pages | 16 |
| ISBN (Electronic) | 9780323312677 |
| ISBN (Print) | 9780323311496 |
| DOIs | |
| Publication status | Published - 15 May 2015 |
| Externally published | Yes |
Keywords
- Cohesive zone
- Controlled Poisson Voronoi tessellation (CPVT)
- Crystal plasticity finite element (CPFE)
- Micro-forming
- Micro-pin
- VGRAIN
ASJC Scopus subject areas
- General Engineering
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