| EPSRC Reference: |
GR/L93041/01 |
| Title: |
NEW SOLUTION PROCEDURES FOR THE NON-LINEAR FINITE ELEMENT ANALYSIS OF STRUCTURES |
| Principal Investigator: |
Crisfield, Professor C |
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| Department: |
Aeronautics |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
30 July 1998 |
Ends: |
29 October 2001 |
Value (£): |
127,521
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| EPSRC Research Topic Classifications: |
| Eng. Dynamics & Tribology |
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Summary on Grant Application Form |
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It is well known that (implicit) finite element procedures are still not robust for problems involving strongly discontinuous non-linearities such as those experienced in changing contact conditions and with local material failure brittle or softening). These areas are increasingly required in todays numerical simulations which are more and more replacing expensive experimental tests. The proposers recent work on the progressive failure modelljng of carbon-fibre laminated structures and on non-linear dynamics has indicated a number of possible avenues that deserve further research in a wider context. In summary these are;1) New arc-length methods with direct interaction with local material models (here taken to include the local contact condition).2) New line-search procedures specifically geared to contact.3) New static/dynamic/static solution procedures.The essence of the first two procedures is the interaction betewen the solution procedures at the structural level and the local material model (here including the changing contact and friction conditions). The essence of the third procedure is the observation that for complex simulations involving local material failure, we often experience a range of local snap-throughs and snap-backs that are in reality dynamic. It is therefore proposed to develop automatic solution procedures that switch between static path-following techniques and dynamic procedures(with appropriate damping).
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.imperial.ac.uk |