| title: | An analysis and optimal design of anisotropic structures |
|---|---|
| reg no: | ETF6835 |
| project type: | Estonian Science Foundation research grant |
| subject: |
2.2. Materials Science 2.3. Mechanics |
| status: | accepted |
| institution: | TTU Faculty of Mechanical Engineering |
| head of project: | Jüri Majak |
| duration: | 01.01.2006 - 31.12.2009 |
| description: | Different elastic anisotropy models (orthotropy, transversally isotropy, cubic symmetry, etc.) are commonly used for describing constitutive behaviour of composite materials. However, constitutive behaviour of composites, sheet metals, etc. is anisotropic also in the range of plastic deformations. The current application is focused on the study of the influence of both elastic and plastic anisotropy on constitutive behaviour of structures. The main courses of action can be outlined as: 1) Composite materials a) Nonlinear elastic constitutive models, development and application b) Topology optimization (orientational- thickness design, etc.) c) Application of anisotropic strength (failure) criteria 2) Sheet metals a) Modeling of plastic anisotropy, development of effective material parameters identification methods for advanced yield criteria (Banabic 2003, etc.) b) Formability analysis, application of new anisotropic plasticity models c) New forming technologies- incremental forming. Theoretical modeling and numerical simulation d) Influence of plastic anisotropy and hardening rules on material behaviour 3) Development of numerical algorithms for solving problems, pointed out above a) Discretization methods (FEM based, wavelet based) b) CAS-es(computer algebra systems) methods. Applied for soving 3D orientational design problems, for development of material parameter indentification methods Topics releated to composite materials are continuation of the previous work, study of sheet metals is a new direction. Need to consider material anisotropy is common for both. |
| project group | ||||
|---|---|---|---|---|
| no | name | institution | position | |
| 1. | Martin Eerme | |||
| 2. | Jüri Majak | Tallinna Tehnikaülikooli Mehaanikateaduskond | ||
| 3. | Meelis Pohlak | |||