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Efficiency of unconstrained minimization techniques in nonlinear analysis
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kamat, M. P. Knight Jr., N. F. |
| Copyright Year | 1978 |
| Description | Unconstrained minimization algorithms have been critically evaluated for their effectiveness in solving structural problems involving geometric and material nonlinearities. The algorithms have been categorized as being zeroth, first, or second order depending upon the highest derivative of the function required by the algorithm. The sensitivity of these algorithms to the accuracy of derivatives clearly suggests using analytically derived gradients instead of finite difference approximations. The use of analytic gradients results in better control of the number of minimizations required for convergence to the exact solution. |
| File Size | 1513297 |
| Page Count | 51 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780017514 |
| Archival Resource Key | ark:/13960/t01z90m9k |
| Language | English |
| Publisher Date | 1978-05-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Algorithms Finite Difference Theory Nonlinearity Control Theory Optimization Structural Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
